Rainwater Collection System Installers in Williamson County, Texas

About rainwater collection systems in Williamson County

Rainwater collection (rainwater harvesting) captures runoff from your roof, filters it, and stores it in a tank for irrigation, livestock, fire protection, or the whole house. In the Hill Country — where wells can run 600–900 feet deep, cost $30,000+, and still come up short or hard — a properly sized rainwater system is often the primary water supply. A complete system has gutters and downspouts, a first-flush diverter that dumps the dirtiest first rain, storage tanks (galvanized steel, polyethylene, or concrete), a pump and pressure tank, and for drinking water, sediment filters plus UV disinfection. Texas is one of the most rainwater-friendly states in the country, with sales-tax and property-tax breaks written into law.

Local factors in Williamson County

Williamson County is a central texas · hill country + blackland prairie market covering 1,124 square miles, with rainwater collection systems work concentrated around Georgetown, Leander, Liberty Hill, and Taylor. Fast-growing acreage market. Leander, Liberty Hill, and Georgetown lead in new septic and well permits every year.

What drives the cost of rainwater collection systems

• Storage size — the tank is the biggest cost; a 20,000-gallon potable system typically runs $24,000–$35,000 installed, and 30,000 gallons around $45,000
• Use — irrigation or livestock systems skip disinfection and cost far less than whole-house potable systems
• Tank material — polyethylene is cheapest, galvanized steel with a liner is the Hill Country standard, concrete or ferro-cement costs the most
• Roof and gutters — metal roofs collect the cleanest water; replacing or upsizing gutters adds cost
• Treatment train — filters, UV light, and a pressure pump add several thousand dollars for drinking water
• Site work — a level, compacted tank pad and trenching to the house

Permits, licensing, and process

Texas does not license rainwater installers, though experienced pros often hold the ARCSA Accredited Professional credential from the American Rainwater Catchment Systems Association. The state actively encourages rainwater: equipment and supplies are exempt from state sales tax (Tax Code §151.355), local taxing units may exempt the system from property tax (Tax Code §11.32), and most HOAs cannot prohibit rainwater systems (Property Code §202.007). If the house is also connected to a city or public water system, Texas requires cross-connection safeguards, and the connection must be made by a licensed plumber. Some cities and groundwater districts offer rebates — ask before you buy.

Common mistakes to avoid

• Undersizing storage — the tank has to carry you through a July–September dry spell, not just hold one storm
• Skipping the first-flush diverter — the first rain off a roof carries dust, pollen, and bird droppings into the tank
• Drinking untreated rainwater — potable systems need filtration and disinfection, and UV bulbs need annual replacement
• Collecting off an asphalt-shingle roof for drinking water without asking about treatment
• Forgetting to claim the sales-tax exemption — give your installer a Texas exemption certificate before you buy

What to ask every contractor

• Are you an ARCSA Accredited Professional, and how many potable systems have you installed?
• How did you size my storage — what roof area, rainfall, and household use did you assume?
• What tank material do you recommend and what is its warranty?
• What filtration and disinfection are included, and what does annual maintenance cost?
• Will you handle the Texas sales-tax exemption certificate and any rebate paperwork?
• If you connect to my existing plumbing, who is the licensed plumber?

Best time of year

Install before the spring and fall rainy seasons (typically May–June and September–October in Central Texas) so the tank fills while rain is most likely. Tank lead times can stretch to several weeks in spring.