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Let’s Build the Right Rainwater System for You
Contact Rainwater Specialists with any questions or comments.
Call (512) 677-7246
Frequently Asked Questions
How much does a rainwater collection system cost?
Costs vary based on tank size, system complexity, and site conditions. We provide custom quotes after consultation.
How big are the tanks?
We install tanks a small as 10,000 gallons and as large as 300,000 gallons. We can install tanks above and below ground as well as inside the concrete foundation of a house/structure.
How much space do I need for an above ground tank?
A typical 30,000-gallon tank that is 7’ 2” high requires a 33 ft. diameter sand pad or 28 ft. concrete pad. If a 30,000-gallon tank is desired but space is limited, the diameter of the tank can decrease while height increases, but this adds additional cost due to tank engineering specifications.
What type of roof do I need?
Standing Seam Metal, Corrugated Metal, Asphalt / Bitumen / Composition Shingle, Concrete or Clay Tile, Solar Panels, Slate tile, painted tile. Materials to avoid for potable rainwater use: Cedar Shake, Copper, Lead, Biocides (check to see if levels are low enough not to cause harm to plants and other vegetation) When in doubt, collect a water sample and send it to a lab to know what chemicals (if any) are present in your water. The National Sanitation Foundation (NSF) provides a list of approved roof coatings.
What type of maintenance is required?
Our systems when fitted with appropriate gutter covers and our automatic first-flush device incur very low maintenance. Maintenance is usually 2-3 times a year. This includes changing filters every couple of months and changing an ultraviolet light annually.
Are there tax breaks or incentives?
Central Texas offers rainwater harvesting rebates that vary by city, county, and utility.
Texas also exempts all rainwater collection equipment from state sales tax.
Rebates typically range from $0.25–$1.00 per gallon and may be capped by system cost or location.