Recycled Water Rules
Water Use Rules
Where purple-pipe recycled water is required for irrigation, dual-plumbing requirements for new construction, and cross-connection-control rules.
How Recycled Water Rules Rules Differ by Place
La Mesa, CA: La Mesa Mandatory Recycled Water for Irrigation
Heavy RestrictionsIn the City of La Mesa, a landscape permit holder must irrigate with tertiary treated recycled water whenever the water purveyor serving the property has it available, install a purple…
Boulder, CO: Boulder Bans Graywater Treatment Systems
Heavy RestrictionsBoulder prohibits any water utility customer from installing graywater treatment works or using graywater on their property under City Code Section 10-10-3. The ban, added by Ordinance…
Weld County, CO: Graywater Systems Are Banned in Weld County
Heavy RestrictionsWeld County bans the installation of any graywater treatment system on land or in structures anywhere in the unincorporated area. Ordinance 2025-02, codified at Code § 2-3-30…
Maricopa, AZ: Maricopa Recycled Water Incentive Program
Few RestrictionsMaricopa has no mandatory recycled-water rule; instead, Maricopa City Code § 18.125.040 offers a voluntary sustainable-development incentive for it. Feature #9 in the Water Efficiency…
Mesa, AZ: Mesa Gray Water Recycling System Rules
Few RestrictionsMesa's plumbing code lets homeowners install a gray water recycling system without a separate plumbing permit, as long as it complies with the Arizona Department of Environmental…
Buena Park, CA: Buena Park Recycled Water Use Exemption
Few RestrictionsBuena Park exempts recycled (reclaimed) water from its potable-water conservation and drought-shortage rules, so watering-hour, watering-day, and phase restrictions under Municipal…
Cities & Counties with Recycled Water Rules Rules
385 locations
Arizona
California
Other Water Use Rules Topics
Turf Replacement Rebates
Rebate programs paying residents to replace turf with drought-tolerant landscaping, including per-square-foot incentives and approved plant lists.
Leak Reporting Duty
Property owner's duty to report and repair water leaks within a set window once notified, plus how utilities issue leak-adjustment credits and impose penalties.