Protecting Our Properties & Community: A Comal County Guide to Water Conservation

Comal County is known for its natural beauty, vibrant communities, and the clear waters of its rivers and lakes. However, our region is currently facing a significant challenge: a severe, multi-year drought that is straining our water resources and impacting every aspect of life. This isn’t just an environmental issue; it’s a practical reality affecting our homes, businesses, and the future of our community.

The Water Situation in Comal County (The “Why”)

The signs of the drought are undeniable. Canyon Lake, a vital reservoir for our area, reached historic low levels in early 2025, dropping below records set over a decade ago.[4, 5] As of May 2025, the lake remained significantly below its conservation pool level, hovering around 46% full. This prolonged lack of rainfall has severely impacted inflows into the lake, with the Guadalupe River at Spring Branch gauge recording extremely low flows in recent years, including periods where it was completely dry.

Our groundwater resources, the Edwards and Trinity Aquifers, are also under immense pressure. The Edwards Aquifer, which feeds the iconic Comal and San Marcos Springs, has seen levels drop significantly, triggering mandatory pumping reductions for water providers. Comal Springs flow, a key indicator of aquifer health, has been well below average.[13, 15, 16] The Trinity Aquifer, the primary source for western Comal County, recharges much more slowly than the Edwards. This slow recharge, combined with increased pumping due to population growth, has led to reports of wells running dry in some areas, a situation residents haven’t faced since the historic drought of the 1950s.

These water sources are interconnected. Aquifers feed the springs, which in turn sustain the base flow of our rivers, especially during dry times. When aquifer levels drop, spring flows decrease, impacting river health, recreation, and downstream water users. Similarly, low lake levels can affect aquifer recharge in complex ways and directly impact the surface water supply many rely on. Conserving water, therefore, benefits the entire system – our wells, our springs, our rivers, and our lake.

Why Conservation Matters to Homeowners & Businesses

Water conservation is more than just being environmentally conscious; it’s a practical necessity and a smart financial decision for Comal County residents and businesses.

• Lower Utility Bills: Using less water directly translates to lower monthly water bills. Many conservation measures, like installing efficient fixtures or fixing leaks, also save energy by reducing the demand on water heaters.
• Protecting Property Values: Water scarcity directly impacts property values. Homes dependent on wells face uncertainty and potential costs if wells run dry. Waterfront properties on Canyon Lake may see diminished appeal due to low lake levels impacting recreation and aesthetics. Proactive water conservation can enhance a property’s resilience and attractiveness in a water-scarce market.
• Supporting Local Economy: Our local economy, particularly tourism and recreation centered around the Guadalupe and Comal Rivers and Canyon Lake, depends heavily on healthy water levels. Conservation helps protect these assets. Businesses like river outfitters, marinas, restaurants, and lodging face significant challenges when water levels are low.
• Ensuring Development Viability: Water availability is now a critical limiting factor for new development in Comal County. Utilities like the Texas Water Company have paused new service commitments due to supply constraints, halting thousands of planned homes. Conservation by existing users helps manage demand and supports responsible growth. Properties with secured water access now command significant premiums.
• Community Resilience: During drought, conserving water is a shared responsibility that helps ensure enough water is available for essential needs like drinking, sanitation, and fire protection for the entire community.

Understanding Local Water Rules (The “How”)

Water restrictions in Comal County vary depending on your location and water provider. Key providers include New Braunfels Utilities (NBU), Texas Water Company (TWC), and the Guadalupe-Blanco River Authority (GBRA), which supplies wholesale water and serves some retail customers directly. Each provider has its own Drought Contingency Plan, typically involving stages (e.g., Stage 1, 2, 3, 4) triggered by factors like aquifer levels (e.g., J-17 well for Edwards Aquifer), spring flows (Comal Springs), or reservoir levels (Canyon Lake).

As drought conditions worsen, restrictions become tighter, often severely limiting or prohibiting outdoor watering, car washing, and pool filling. Because a neighbor might be served by a different provider and be under different rules, it is crucial to know your specific water provider and check their website or contact them directly for the current drought stage and associated restrictions. Links and contact information are provided in the Appendix.

Section 1: Water-Smart Yards: Landscaping for Resilience

Outdoor water use, primarily for landscape irrigation, accounts for a significant portion of residential water consumption – often 50% or more, especially during hot, dry Texas summers. With current drought conditions and strict watering restrictions, maintaining traditional, thirsty lawns is becoming increasingly difficult and costly. Shifting to water-smart landscaping practices is essential for conserving water, saving money, and creating beautiful, resilient yards that thrive in our local environment.

Rethinking Your Lawn: Alternatives & Smarter Care

Traditional turfgrass, like St. Augustine, demands substantial water to stay green. Under Stage 3 or 4 restrictions imposed by providers like NBU, TWC, and GBRA, watering these lawns is often limited to once a week or even once every other week, making their survival challenging. This situation necessitates a shift in how we approach our lawns.

• Solution 1: Lawn Alternatives: Consider replacing some or all of your traditional lawn with water-wise alternatives:
  • Artificial Grass: Offers a consistently green look with very low maintenance and zero water needs. Modern artificial turf is durable and can last for many years. However, the upfront cost is higher than natural grass, and it can absorb and radiate heat.
  • Hardscaping: Using materials like stone pavers, flagstone, brick, decomposed granite, or gravel creates durable, waterless areas for patios, walkways, or decorative features. These require minimal upkeep but can also increase surface heat and involve significant initial investment.
  • Mulch: Organic mulches (wood chips, bark) or inorganic mulches (gravel) can cover large areas, suppress weeds, and retain soil moisture for surrounding plants. Organic mulches also improve soil health over time.
  • Drought-Tolerant Groundcovers: Several low-growing plants thrive in our climate with minimal water. Clover is an option that requires less water and fertilizer than grass. Native choices like Silver Ponyfoot, Frogfruit, Horseherb, or Sedges are even better adapted, providing green cover while supporting local ecosystems
• Solution 2: Smarter Lawn Care (If Keeping Some Grass): If you retain some turf areas, adopting smarter care practices can significantly reduce water needs:
  • Mow Higher: Set your mower blade to 3-4 inches. Taller grass blades provide more shade for the soil surface, reducing water evaporation. This also encourages deeper root growth, making the lawn more drought-tolerant and better able to compete with weeds.
  • Mow Less Frequently: Reducing mowing frequency allows grass to develop deeper roots and reduces stress on the plant, helping it conserve water during dry periods.
  • Water Deeply and Infrequently: When watering restrictions allow, water your lawn long enough for moisture to penetrate deeply (6-8 inches). This encourages roots to grow deeper, seeking out moisture. Avoid light, frequent watering, which promotes shallow roots vulnerable to drought. The “Cycle & Soak” method (detailed in Section 2) is ideal for achieving deep watering without runoff.

The ongoing drought and associated restrictions are fundamentally changing landscaping norms in Comal County. Water-intensive lawns are becoming less practical and potentially less desirable. Local utilities like NBU and conservation groups actively promote native and drought-tolerant landscaping. Proposed legislation even aims to prevent HOAs from mandating thirsty lawns. Embracing water-wise alternatives or smarter lawn care is not just about adapting to restrictions; it’s about creating sustainable landscapes that align with our local environment and potentially enhance property value in a water-conscious future.

Planting for Comal County: Native, Adapted & Xeriscape Choices

Choosing the right plants is the cornerstone of a water-efficient landscape. Plants native to the Texas Hill Country and Comal County have evolved over millennia to thrive in our specific conditions – intense heat, periodic drought, and unique soil types.

• Why Native and Adapted Plants?
  • Water Conservation: Native plants generally require significantly less supplemental water once established compared to non-native species
  • Lower Maintenance: They are typically more resistant to local pests and diseases and require less fertilizer.
  • Wildlife Support: Native plants provide essential food sources (nectar, pollen, seeds, berries) and habitat for local birds, butterflies, bees, and other beneficial insects.
  • Regional Beauty: They reflect the natural character and aesthetic of the Texas Hill Country.
• Understanding Xeriscaping: Xeriscape is not just rocks and cacti; it’s a comprehensive approach to landscaping that emphasizes water conservation through seven key principles:
  1. Planning and Design: Thoughtfully laying out the landscape based on water needs, sun exposure, and function.
  2. Soil Analysis and Improvement: Amending soil with compost to improve water absorption and retention.
  3. Practical Turf Areas: Limiting grass to areas where it serves a practical purpose and choosing drought-tolerant varieties.
  4. Appropriate Plant Selection: Choosing low-water-use plants adapted to the local climate (natives are often the best choice).
  5. Efficient Irrigation: Using methods like drip irrigation and watering only when necessary.
  6. Use of Mulches: Applying mulch to retain soil moisture and suppress weeds.
  7. Appropriate Maintenance: Mowing, pruning, and fertilizing properly to maintain plant health and water efficiency.
• Recommended Plants for Comal County: Drawing from resources like Comal Conservation, Texas A&M AgriLife Extension, and the Lady Bird Johnson Wildflower Center, here are some examples of beautiful, resilient native plants well-suited for our area
  • Trees: Cedar Elm (Ulmus crassifolia), Live Oak (Quercus virginiana/fusiformis), Texas Redbud (Cercis canadensis var. texensis), Texas Persimmon (Diospyros texana), Mexican Plum (Prunus mexicana).
  • Shrubs: Texas Sage/Cenizo (Leucophyllum frutescens), Flame Acanthus (Anisacanthus quadrifidus var. wrightii), Agarita (Mahonia trifoliolata), Texas Mountain Laurel (Sophora secundiflora), Yaupon Holly (Ilex vomitoria).
  • Perennials/Wildflowers: Mealy Blue Sage (Salvia farinacea), Purple Coneflower (Echinacea purpurea), Blackfoot Daisy (Melampodium leucanthum), Winecup (Callirhoe involucrata), Zexmenia (Wedelia acapulcensis var. hispida).
  • Grasses: Little Bluestem (Schizachyrium scoparium), Sideoats Grama (Bouteloua curtipendula), Buffalograss (Bouteloua dactyloides), Muhly Grass (Muhlenbergia spp.).
  • Resources: For more extensive lists and information, consult the Native Plant Society of Texas (npsot.org) and the Lady Bird Johnson Wildflower Center’s native plant database (wildflower.org/plants-main).

By prioritizing native and adapted plants within a Xeriscape framework, you create a landscape that is not only water-efficient and low-maintenance but also ecologically beneficial and reflective of Comal County’s natural heritage.

The Power of Mulch: Saving Water & Improving Soil

Mulching is one of the simplest yet most effective practices for conserving water in any landscape. Applying a layer of material over the soil surface provides multiple benefits.

• How Mulch Works:
  • Moisture Retention: Mulch acts like a blanket, significantly reducing the amount of water that evaporates from the soil surface, keeping the root zone moist for longer periods. This means you need to water less often.
  • Weed Suppression: A layer of mulch blocks sunlight from reaching the soil, preventing many weed seeds from germinating. Fewer weeds mean less competition for water and nutrients for your desired plants.
  • Temperature Moderation: Mulch insulates the soil, keeping it cooler in the summer and warmer in the winter. This protects plant roots from extreme temperature fluctuations.
  • Soil Health Improvement (Organic Mulches): Organic mulches, such as shredded hardwood bark, pine bark, wood chips, or compost, gradually decompose over time. This process adds valuable organic matter to the soil, improving its structure, aeration, and ability to hold water.
• Application:
  • Apply a layer of organic mulch 2 to 4 inches deep over garden beds and around trees and shrubs.
  • Keep mulch pulled back a few inches from the base of plant stems and tree trunks to prevent moisture buildup and potential rot.
  • Replenish organic mulch as it decomposes, typically once a year or as needed.
  • Inorganic mulches like gravel or decomposed granite can also be used, especially in very low-water areas, but they don’t provide the soil-building benefits of organic mulch.

Incorporating mulch is a fundamental technique for any water-wise landscape in Comal County. It directly combats water loss through evaporation, reduces maintenance by suppressing weeds, and improves overall soil and plant health.

Section 2: Watering Wisely: Efficient Irrigation Techniques

Beyond choosing the right plants, how you water is critical for conservation, especially under drought restrictions. Efficient irrigation techniques ensure water gets where it’s needed – the plant roots – with minimal waste from runoff or evaporation.

Know Your Watering Schedule: Comal County Rules Explained

First and foremost, understanding and adhering to local watering restrictions is essential. These rules are in place to manage limited water supplies during drought and ensure fairness among users. Violating restrictions can lead to warnings or fines, but more importantly, compliance is a collective effort vital to community water security.[39, 40, 41]

As mentioned earlier, restrictions vary significantly depending on your water provider (NBU, TWC, GBRA, etc.) and the current declared drought stage.[10, 38, 39, 40, 41] Always verify the rules for your specific address. The table below summarizes typical restrictions based on recent information, but always confirm current rules with your provider (see Appendix).

Table 1: Example Comal County Watering Restrictions (Check Provider for Current Stage & Rules)

Note: This table is illustrative based on available data and subject to change. Verify current restrictions with your specific water provider.

This variability underscores the importance of knowing your provider. What’s permissible for an NBU customer under Stage 2 might be prohibited for a TWC customer under Stage 4, even if they live nearby.

Choosing Your Method: Drip, Soakers, and Hand Watering

When restrictions allow watering, choosing the most efficient method makes a big difference.

• Drip Irrigation:
  • How it works: A network of tubes delivers water slowly and directly to the base of individual plants through small emitters.
  • Pros: Highest efficiency (up to 90%), minimizes evaporation and runoff, reduces weed growth, ideal for garden beds, shrubs, trees, and containers.
  • Cons: Higher initial cost and installation effort compared to hoses, emitters can clog (requires filter), tubing can be damaged by digging or pests.
  • Installation Basics (DIY): Connect a filter and pressure regulator to your hose bib or valve. Run 1/2-inch “mainline” tubing to the planting area. Punch holes in the mainline and insert connectors for 1/4-inch “distribution” tubing. Run the 1/4-inch tubing to individual plants and attach appropriate emitters (drippers, bubblers). Secure tubing with stakes.
• Soaker Hoses:
  • How it works: Hoses made of porous material that “weep” water along their entire length.
  • Pros: Relatively inexpensive and easy to set up, good for straight rows or densely planted beds.
  • Cons: Less precise than drip, can water unevenly (especially on slopes), prone to clogging, degrades faster in sunlight (covering with mulch helps), not ideal for widely spaced plants.
  • Setup Basics (DIY): Flush the hose before first use. Lay it out in the sun to make it more flexible. Position near plant bases (max 150 ft per water source). Connect to faucet (ensure restrictor washer is at the source end). Turn water on slowly, adjusting pressure for a slow, even weep. Run for a test period (e.g., 30-40 min) and check soil moisture depth. Cover with mulch.
• Hand Watering:
  • When Allowed: Often permitted during specific hours even when sprinklers are restricted.
  • Best Practices: Use a hose with an automatic shut-off nozzle. Water slowly at the base of plants, allowing water to soak in. Avoid spraying foliage unnecessarily. Water only when plants show signs of needing it (wilting, dry soil). Ideal for containers and spot-watering specific plants.

Matching the method to the need is key. Drip irrigation is best for beds and individual shrubs/trees. Soaker hoses work well for vegetable rows or hedges. Hand watering is suitable for containers or targeted watering. Using sprinklers efficiently requires careful management, as discussed next.

Smart Watering: Cycle & Soak, Controllers & Sensors

For automated sprinkler systems, using smart techniques and technology can drastically improve efficiency and reduce waste.

• Cycle & Soak Method: Many soils in Central Texas, particularly clays, absorb water slowly. Applying water faster than the soil can absorb it leads to runoff – wasted water that flows into the street. The “cycle and soak” method addresses this:
  1. Determine Run Time: Find out how long you can run your sprinklers in one zone before water starts to run off. A simple way is to run the zone and time how long it takes for runoff to begin. Alternatively, conduct a “catch can” or “tuna can” test: place several straight-sided cans (like tuna cans) throughout a zone, run the sprinklers for a set time (e.g., 15-30 minutes), measure the average water depth in the cans, and calculate the precipitation rate (inches per hour). Clay soils typically absorb only about 0.2 inches per hour. Calculate the maximum run time per cycle based on this absorption rate.
  2. Program Multiple Cycles: Instead of running a zone for its total required time at once, divide it into shorter cycles based on the maximum run time determined above. Program your irrigation controller to run the first cycle for that zone, then switch to other zones.
  3. Allow Soak Time: Schedule a “soak” period of at least 30-60 minutes (longer for clay soils) between cycles for the same zone. This allows the water from the first cycle to infiltrate the soil.
  4. Repeat: Program subsequent cycles for the zone, separated by soak times, until the total desired watering duration for that zone is met.[54, 55] Many modern controllers have a built-in cycle/soak feature.
• Smart Irrigation Controllers: These advanced controllers go beyond simple timers. They use local weather data (forecasted rain, temperature, humidity), site conditions (soil type, slope, sun exposure), and plant types to automatically adjust watering schedules. They can automatically skip watering cycles when rain is expected or reduce watering times during cooler weather, saving significant amounts of water compared to fixed schedules. Look for EPA WaterSense labeled controllers, which are independently certified for efficiency and performance. Rebates may be available from local providers like LCRA.
• Soil Moisture & Rain Sensors: These devices provide direct feedback to the irrigation controller. Soil moisture sensors measure the actual moisture level in the root zone and prevent watering if the soil is already sufficiently moist. Rain sensors detect rainfall and interrupt scheduled watering cycles, preventing unnecessary irrigation during or immediately after a storm.

By combining appropriate watering methods with smart techniques like cycle-and-soak and technologies like smart controllers and sensors, homeowners and businesses can ensure their landscapes receive the water they need efficiently, minimizing waste and complying with local restrictions.

Section 3: Saving Water Indoors: Easy Wins for Homes & Businesses

While outdoor watering often represents the largest portion of residential water use, significant savings can also be achieved indoors through simple repairs, fixture upgrades, and mindful habits. These indoor savings benefit both homeowners and businesses.

Stop the Drips: Finding and Fixing Leaks

Household leaks can waste a surprising amount of water – the EPA estimates the average family can waste 180 gallons per week, or 9,400 gallons per year, from simple leaks. Fixing leaks is often the fastest and most cost-effective way to save water.

• How to Find Leaks:
  • Toilets: The most common source of silent leaks. Add a few drops of food coloring to the toilet tank (not the bowl). Wait 10-15 minutes without flushing. If color appears in the bowl, the flapper valve is leaking.
  • Faucets: Check for drips from the spout or leaks around the base. Listen for dripping sounds.
  • Showerheads: Check for drips when the shower is off.
  • Appliances: Look for pooling water around washing machines, dishwashers, water heaters, and refrigerators with ice makers. Check hose connections for drips.
  • Water Meter Check: If you suspect a leak but can’t find it, turn off all water-using appliances and fixtures. Check your water meter; if the dial is moving, you likely have a leak somewhere.
• Repair Promptly: Repair leaks as soon as possible. Simple repairs like replacing a faucet washer or a toilet flapper are often inexpensive DIY projects. For more complex leaks, contact a licensed plumber. During declared drought stages, some utilities like NBU may require leaks to be repaired within 24 hours of notification.
• Resources: NBU offers a helpful leak detection checklist on their website.[74]

Upgrade Your Fixtures: Low-Flow Toilets, Showerheads & Aerators

Modern plumbing fixtures are designed to use significantly less water than older models, thanks largely to federal standards and the EPA’s WaterSense program. WaterSense labeled products are independently certified to be at least 20% more water-efficient than standard models while performing as well or better.[25, 73, 75] Upgrading fixtures offers substantial long-term water and energy savings.

• Low-Flow Toilets:
  • Savings: Older toilets can use 3.5 to 6 gallons per flush (gpf). The current federal standard is 1.6 gpf. WaterSense labeled toilets use 1.28 gpf or less. Replacing old toilets with WaterSense models can save the average family 20-60%, equating to nearly 13,000 gallons and over $170 in water costs annually.
  • Installation: Replacing a toilet involves turning off the water, draining and removing the old toilet, cleaning the floor flange, installing a new wax ring, setting the new toilet bowl and tank, connecting the water supply, and checking for leaks. While DIY is possible, professional installation is recommended if you’re uncomfortable with plumbing.
• Low-Flow Showerheads:
  • Savings: Standard showerheads use 2.5 gpm or more. WaterSense labeled models use a maximum of 2.0 gpm. Replacing just one showerhead can save the average family 2,700 gallons of water and the energy to power their home for 11 days each year, translating to over $75 in annual savings.
  • Installation: This is typically a simple DIY task. Unscrew the old showerhead from the shower arm (use pliers with a cloth if needed). Clean the threads on the shower arm. Wrap the threads with plumber’s tape (usually clockwise). Screw on the new showerhead hand-tight, then perhaps a slight turn with a wrench if necessary. Check for leaks.
• Faucet Aerators:
  • Savings: Standard bathroom faucets flow at 2.2 gpm. WaterSense labeled faucets and aerators use a maximum of 1.5 gpm, saving 30% or more water. Replacing old aerators can save the average family 700 gallons per year. Aerators are very inexpensive, often costing only a few dollars.
  • Installation: Extremely easy DIY. Simply unscrew the existing aerator from the tip of the faucet spout (use pliers gently if needed) and screw on the new WaterSense labeled aerator.

Table 2: Estimated Annual Savings from WaterSense Fixtures (Average Family)

Upgrading to water-efficient fixtures is a smart investment that provides continuous savings on utility bills while significantly reducing your household’s or business’s water footprint.

Efficient Appliances: Laundry & Dishwashing Best Practices

How you use your appliances can make a big difference in water and energy consumption.

• Run Full Loads Only: This is the single most important habit for both clothes washers and dishwashers. They use roughly the same amount of water and energy whether half-full or completely full, so maximize efficiency by waiting for a full load.[82, 83, 84] Running one less load of dishes per week can save nearly 320 gallons of water annually.
• Dishwasher Tips:
  • Scrape, Don’t Rinse: Modern dishwashers and detergents are designed to handle food soils. Scrape large food particles into the trash or compost bin instead of pre-rinsing dishes under running water.
  • Use Eco-Settings: If your dishwasher has an “Eco,” “Light,” or “Energy Saver” cycle, use it. These cycles typically use less water and lower temperatures.
  • Air Dry: Select the air-dry setting or prop the door open after the final rinse instead of using the heated dry cycle. This saves energy.
• Clothes Washer Tips:
  • Wash in Cold Water: About 90% of the energy used by a clothes washer goes to heating the water. Unless dealing with oily stains, cold water cleans effectively for most loads and saves significant energy.
  • Use High Spin Speed: Selecting a higher spin speed extracts more water from clothes, reducing the time and energy needed for drying.
  • Choose ENERGY STAR: When replacing a washer, look for the ENERGY STAR label. Certified washers use about 20% less energy and 30% less water than standard models. Full-sized ENERGY STAR models use about 14 gallons per load compared to 20 gallons for standard machines.

Simple Habits, Big Savings: Turning Off Taps & Shorter Showers

Everyday habits can add up to significant water savings with minimal effort.

• Turn Off the Tap: Don’t let water run unnecessarily. Turn off the faucet while brushing your teeth, shaving, or lathering hands. This simple act can save thousands of gallons per person each year.
• Take Shorter Showers: Aim for showers of 5 minutes or less. Each minute saved with a standard showerhead saves 2.5 gallons; even with a low-flow showerhead, shorter showers conserve water.

These indoor conservation measures, from fixing leaks to upgrading fixtures and adopting mindful habits, are accessible to nearly everyone and collectively contribute significantly to preserving Comal County’s water resources.

Section 4: Catching the Rain: Your Own Water Supply

Rainwater harvesting (RWH) – collecting and storing rainwater, usually from rooftops – is an increasingly popular way for homeowners and businesses in Comal County to supplement their water supply, reduce reliance on municipal or well water, and conserve resources. Systems can range from simple rain barrels to complex cistern setups providing water for various needs.

Rain Barrels & Cisterns: Setup, Sizing & Maintenance Basics

• Concept: RWH captures rainfall that would otherwise become runoff, storing it for later use.[85]
• System Types:
  • Simple Systems: Can be as basic as directing roof runoff (without gutters) to landscape areas or collecting water in one or more rain barrels placed under downspouts.[85] Rain barrels typically hold 50-80 gallons.
  • Complex Systems (Cisterns): Involve larger storage tanks (cisterns), potentially thousands of gallons, often incorporating pumps, more extensive filtration, and sometimes treatment for potable (drinking) water use.
• Key Components:
  1. Catchment Surface: Usually the roof.
  2. Conveyance: Gutters and downspouts to channel water.
  3. Pre-filtration: Leaf screens on gutters, inlet filters, and/or first-flush diverters to remove debris before water enters the tank.
  4. Storage: Rain barrel(s) or cistern(s). Must be opaque or painted to prevent algae growth. Openings need screens to prevent mosquito entry.
  5. Distribution: Gravity feed (if tank is elevated) or a pump.
  6. Overflow: Essential pipe to safely direct excess water away from foundations when the tank is full.
  7. Treatment (for potable use): Additional filtration (e.g., sediment, carbon filters) and disinfection (e.g., UV light).
• Installation Basics (DIY Focus):
  • Location & Base: Choose a level spot near a downspout. The base must support the weight of a full tank (water weighs ~8.4 lbs/gallon). Options include packed earth/sand, concrete pavers, or a poured concrete pad. Elevating the barrel/tank increases pressure for gravity-fed hoses. NBU requires elevation of at least 6 inches.
  • Downspout Connection: Cut the existing downspout and install an elbow or diverter to direct water into the tank’s screened inlet.
  • Fittings: Install a spigot near the bottom for water access and ensure the overflow pipe is properly connected and directed.
  • First Flush (Cisterns): Larger systems often require a first-flush diverter to discard the initial, potentially dirtier, runoff from the roof. NBU requires diverting the first 10 gallons per 1000 sq ft of catchment area for cistern rebates.
• Sizing Your System:
  • Supply vs. Demand: The basic principle is to match storage capacity to your intended use (demand) and potential rainfall capture (supply).
  • Calculating Supply: A common estimate is capturing ~0.62 gallons per square foot of roof area per inch of rain. Account for losses (75-90% collection efficiency is typical). Use online calculators from TWDB or AgriLife Extension for more precise estimates.
  • Estimating Demand: Determine how much water you need for the intended use (e.g., gallons needed per week for garden irrigation).
  • Tank Size: Compare monthly supply potential with monthly demand. In areas with variable rainfall like ours, a larger tank may be needed to store water from wetter periods for use during dry spells.
• Maintenance: Regular maintenance ensures system longevity and water quality:
  • Keep gutters and leaf screens clean.
  • Inspect and clean inlet filters and first-flush diverters regularly (monthly and after storms).
  • Inspect tanks annually for leaks or cracks. Periodically drain/clean sediment if needed.
  • Check overflow to ensure it’s clear.
  • Maintain pumps and treatment systems according to manufacturer instructions.
  • Flush hoses/barrels occasionally to remove buildup.

Rainwater harvesting provides a valuable, independent water source, particularly useful for outdoor needs like watering gardens and landscapes, which helps reduce demand on strained municipal and groundwater supplies. While system costs vary, state incentives like sales tax exemption and potential local rebates (like NBU’s program) can make installation more affordable.

Using Harvested Rain: Rules & Possibilities in Texas

Harvested rainwater can be used for various purposes, but regulations apply, especially concerning drinking water and connections to public systems.

• Potential Uses:
  • Non-Potable (Most Common): Landscape and garden irrigation, washing vehicles, topping off pools or ponds, flushing toilets (requires separate plumbing). This is the simplest and most common use, requiring minimal treatment. Many rebate programs are specifically for non-potable systems.
  • Potable (Drinking Water): Allowed in Texas, but requires significant treatment (filtration, disinfection like UV) to meet safe drinking water standards. Requires careful system design, regular maintenance, and potentially water quality testing.
• Texas Regulations & Guidelines:
  • HOA Restrictions: HOAs cannot outright ban RWH systems. However, they can regulate aesthetics (size, type, color, materials, screening) for systems visible from streets or common areas, provided the regulations don’t prevent economic installation.
  • Connection to Public Water Supply: If an RWH system is connected to a public water supply (usually as a backup), strict cross-connection prevention is required. This typically involves an air gap or a backflow prevention assembly installed at the storage tank. Written notice must be given to the utility provider before connecting. The public water backup must connect only to the storage tank, not directly to the building’s plumbing.
  • Potable Systems Connected to Public Water: If a potable RWH system is connected to a public water supply, installation and maintenance must be performed by a plumber with a specific Water Supply Protection Specialist endorsement.
  • Sales Tax Exemption: Equipment purchased for rainwater harvesting is exempt from Texas state sales tax. Purchasers need to provide Form 01-339 (Texas Sales and Use Tax Resale Certificate / Exemption Certification) to the supplier.
  • State Encouragement: Texas law encourages RWH and prevents municipalities or counties from denying building permits solely based on the use of RWH, though systems may need to meet minimum standards.

Understanding these rules is vital before installing a system. For most homeowners and businesses focused on landscape watering, a non-potable system is the most straightforward and common approach, offering significant conservation benefits.

Section 5: Water Conservation Strategies for Local Businesses

Businesses in Comal County, from small retail shops and restaurants to larger industrial operations and hospitality venues, play a significant role in overall water consumption. Implementing water conservation strategies is not only environmentally responsible but also makes sound business sense by reducing operating costs and demonstrating community leadership during this critical drought.

Know Your Flow: Conducting a Business Water Audit

The first step towards effective water management for any business is understanding how and where water is being used. A water audit provides this crucial information.

• Purpose: A water audit systematically inventories all water uses within a facility, quantifies consumption, identifies potential leaks and inefficiencies, and highlights opportunities for savings. This data forms the basis for a targeted conservation plan.
• Key Steps:
  1. Gather Background Information: Collect 1-2 years of water and sewer bills to establish baseline usage. Obtain facility site plans, plumbing diagrams (if available), lists of water-using equipment (restrooms, kitchens, cooling towers, irrigation, processes), operating hours, and employee/customer numbers.
  2. Conduct a Facility Walk-Through: Systematically inspect all areas where water is used. Verify equipment inventories, check model numbers for flow rates (or measure flow rates directly if possible), look for leaks in fixtures and pipes, observe operational practices (e.g., cleaning procedures), and assess irrigation system condition. Interviewing maintenance staff and employees who operate water-using equipment is essential.
  3. Analyze Data and Identify Opportunities: Compare total metered water use from bills to the sum of estimated or measured use from individual fixtures and processes. Significant discrepancies may indicate leaks or unmetered uses. Identify high-water-use areas or equipment. Calculate water costs for different areas. Pinpoint specific opportunities for fixture upgrades, process changes, leak repairs, or improved irrigation.
  4. Prepare an Audit Report: Document all findings, including the water balance (inflows vs. identified uses), equipment inventories, identified savings opportunities, potential costs, and estimated payback periods.
• Resources:
  • EPA WaterSense: Offers checklists and worksheets specifically for commercial facilities (e.g., Building Water Survey Worksheet, Existing Plumbing Equipment Worksheet) to guide the audit process.
  • TWDB: Provides guidance on industrial water audits and water loss control for utilities.
  • Local Utilities: Check if your provider (NBU, TWC, GBRA) offers commercial water assessments. NBU provides free assessments for commercial customers.

A thorough water audit provides the necessary data to make informed decisions, prioritize conservation efforts based on cost-effectiveness and potential savings, and track the success of implemented measures.

Water-Wise Commercial Landscapes & Irrigation

Landscaping often represents a major water use for commercial properties like office parks, retail centers, hotels, and multifamily housing. Implementing efficient landscaping and irrigation practices can yield substantial savings.

• Apply Residential Principles at Scale: The core principles of water-wise landscaping discussed earlier apply equally to commercial properties:
  • Limit Turf: Reduce non-essential grass areas and replace them with less water-intensive options.
  • Use Native/Adapted Plants: Select plants suited for the Comal County climate that require minimal supplemental water once established.
  • Employ Xeriscaping: Utilize water-conserving design principles.
  • Mulch Generously: Apply mulch to beds to retain moisture and suppress weeds.
• Optimize Irrigation Systems:
  • Smart Controllers: Install weather-based or soil moisture-based smart irrigation controllers to automate adjustments and prevent unnecessary watering.
  • Drip Irrigation: Use drip systems for planting beds, trees, and shrubs for targeted, efficient watering.
  • Efficient Heads/Nozzles: Ensure sprinkler heads are efficient (e.g., pressure-regulating, appropriate spray patterns) and properly adjusted to avoid watering pavement.
  • Regular Maintenance: Conduct routine checks for leaks, broken heads, clogged nozzles, and controller programming errors. Adjust schedules seasonally.
  • Watering Times: Adhere to local restrictions, typically watering during cooler, early morning hours to minimize evaporation.
• Professional Expertise: Partner with commercial landscape and irrigation companies that have expertise in water conservation techniques and familiarity with local conditions and regulations. EarthWorks, for example, highlights their experience with smart irrigation conversions and Xeriscaping.

Given the scale of commercial landscapes, optimizing outdoor water use through smart design and efficient irrigation offers one of the largest potential areas for water and cost savings for businesses.

Boosting Indoor Efficiency: Fixtures, Processes & Reuse

Beyond landscaping, businesses can find significant water savings indoors.

• Restrooms and Kitchens:
  • High-Efficiency Fixtures: Install EPA WaterSense labeled toilets, urinals, faucet aerators (0.5 gpm recommended for commercial restrooms), and showerheads (in hotels or facilities with showers). For commercial kitchens, high-efficiency pre-rinse spray valves (≤ 1.15 gpm) can save substantial water and energy compared to older models.
  • Leak Repair: Implement a program for regular inspection and prompt repair of leaks in restrooms and kitchens.
• Specialized Equipment and Processes:
  • Cooling Towers: These can be major water consumers. Implement best practices for managing cycles of concentration, controlling blowdown, and treating water efficiently. Consider alternative cooling methods if feasible.
  • Commercial Laundry: For hotels or facilities with on-site laundry, use high-efficiency commercial washers, run full loads, and optimize water levels and temperatures.
  • Food Service: Implement water-saving practices like using water-efficient dishwashers, thawing food in refrigerators instead of under running water, and serving water to restaurant patrons only upon request.
  • Other Processes: Audit any unique water-using processes specific to the industry (e.g., manufacturing, cleaning, vehicle washing) to identify efficiency improvements.
• Water Reuse and Recycling:
  • Explore Opportunities: Investigate the feasibility of capturing and reusing water on-site. Potential sources include rainwater, air conditioning condensate, cooling tower blowdown, and treated wastewater (greywater or reclaimed water).
  • Potential Uses: Reused water can often substitute for potable water in applications like landscape irrigation, cooling tower makeup, toilet flushing, and industrial processes.
  • Check Local Availability: Investigate if municipal reclaimed water systems are available (like Denton’s program [106]) or if partnerships (like the “One Water” initiative involving NBU and GBRA [5, 24, 105, 108]) offer opportunities. Evaluate the potential for using reclaimed water in industrial applications like aggregate production (quarries).

Optimizing indoor water use through efficient fixtures, process improvements, and exploring water reuse can lead to substantial operational cost savings and significantly reduce a business’s demand on limited freshwater resources.

Getting Your Team On Board: Employee Engagement

Water conservation technologies and infrastructure are most effective when supported by a water-conscious workforce. Engaging employees is crucial for achieving and sustaining water savings.

• Why It Matters: Daily employee actions – from reporting leaks to using equipment efficiently – directly impact a facility’s water consumption. Training ensures employees understand the importance of conservation and know how to contribute.
• Effective Training Content:
  • Context: Explain the local water situation in Comal County (drought, stressed resources) and why conservation is critical for the community and the business (costs, sustainability goals).
  • Practical Tips: Provide clear, actionable guidance relevant to the workplace: reporting leaks immediately, turning off taps fully, using water-efficient appliances correctly, proper procedures for water-using tasks (cleaning, production), understanding irrigation schedules.
• Engaging Training Methods:
  • Interactive Sessions: Use workshops, live demonstrations (e.g., how to spot leaks, proper equipment use), and Q&A sessions rather than just lectures.
  • Visual Aids: Post reminders near sinks and equipment. Use dashboards or displays showing facility water use to make consumption visible.
  • Challenges & Recognition: Implement friendly competitions between departments, reward employees or teams for identifying leaks or suggesting water-saving ideas, and recognize “Water Champions”.
  • Onboarding: Include water conservation practices in new employee orientation.

Fostering a culture where every employee understands their role in water stewardship maximizes the effectiveness of conservation investments and leads to lasting reductions in water use.

Local Incentives for Businesses (PACE Program, etc.)

Financial incentives can help businesses overcome the initial cost of implementing water-saving upgrades.

• Comal County PACE Program: Property Assessed Clean Energy (PACE) is a financing mechanism available in Comal County for commercial, industrial, and large multifamily (5+ units) properties.[111] It allows property owners to finance 100% of the cost of qualified energy and water conservation improvements (e.g., high-efficiency HVAC, water heating systems, irrigation upgrades, rainwater harvesting, low-flow fixtures) through a voluntary assessment added to their property tax bill. PACE offers long-term financing (often 10-20 years) at competitive rates, with little to no upfront cost. The assessment stays with the property if it’s sold, transferring the repayment obligation (and the benefits) to the new owner. This program makes significant water efficiency projects financially accessible for many businesses.
• Utility Rebates/Programs: Businesses should always check with their specific water provider (NBU, TWC, GBRA, etc.) for any available commercial rebates or water assessment programs. NBU, for example, offers rebates and free assessments that may apply to commercial customers. LCRA also offers rebates, though eligibility depends on being an LCRA customer or receiving water from specific partner providers.
• State Tax Exemptions: Remember that equipment purchased specifically for rainwater harvesting is exempt from Texas state sales tax.

Exploring these financial incentives can significantly reduce the net cost of water conservation projects, improving the return on investment and making sustainability upgrades more attainable for Comal County businesses.

Conclusion: Our Water, Our Future: Conserving Together in Comal County

Comal County faces a serious water challenge, driven by prolonged drought and rapid growth. The record low lake levels, stressed aquifers, and tightening water restrictions are clear signals that business-as-usual is no longer sustainable. However, this challenge also presents an opportunity for our community to come together and embrace water conservation as a fundamental practice.

For homeowners, saving water means adopting water-wise landscaping, utilizing efficient irrigation methods, fixing leaks promptly, upgrading to low-flow fixtures, and being mindful of daily water use habits. For businesses, it involves understanding water consumption through audits, implementing efficient technologies and processes indoors and outdoors, engaging employees in conservation efforts, and exploring innovative solutions like water reuse.

These actions are not just about complying with restrictions; they are smart investments that lower utility bills, protect property values, support our local economy, and preserve the natural beauty and recreational opportunities that define the Comal County way of life.

Conservation is the cheapest and most readily available source of “new” water. By working together – residents, businesses, and local water management entities – we can stretch our existing supplies, build resilience against future droughts, and ensure a sustainable water future for generations to come in Comal County. Every drop truly does count. Use the resources provided in the Appendix to learn more and take action today.

Appendix: Comal County Water Conservation Resources

This appendix provides contact information and links to key organizations involved in water management and conservation in Comal County. Always check with your specific provider for the most current drought stage information and restrictions applicable to your address.