Denton, TX Landscaping Rules: Rainwater Harvesting (2026)

Texas actively encourages rainwater harvesting. 0121 affirms the right to collect rainwater from rooftops for domestic use. 355 provides sales tax exemption for rainwater harvesting equipment including barrels, cisterns, pumps, and first-flush diverters. 007 prohibits HOAs from restricting rainwater harvesting systems, though HOAs may require that systems be screened from view and maintained in good condition. Denton does not require a permit for residential rainwater collection barrels or small cisterns used for landscape irrigation. Larger systems connected to indoor plumbing for potable use must comply with TCEQ guidelines and may require permitting through Denton Development Services.

The City of Denton Water Utilities occasionally promotes rain barrel programs as part of its water conservation outreach, particularly during Stage 1 and Stage 2 drought conditions. Given Dentons average annual rainfall of approximately 37 inches and the drought-prone North Texas climate, rainwater harvesting provides a meaningful supplement to municipal water for landscape irrigation. Systems must not create standing water that breeds mosquitoes; barrels must be sealed or screened.