Westminster rainwater collection is limited by Colorado law. HB 16-1005 allows up to two 55-gallon barrels (110 gallons) per household for outdoor use only.
Rainwater harvesting in Westminster is regulated under Colorado water law, which historically prohibited collection due to prior appropriation doctrine. HB 16-1005 (2016) legalized limited collection: up to two rain barrels with a combined capacity of 110 gallons for residential properties. Water may only be used for outdoor purposes such as lawn and garden irrigation on the property where collected. Rooftop collection systems beyond two barrels remain illegal without a water right. Commercial rainwater harvesting requires a water court decree or substitute water supply plan.
Exceeding 110-gallon limit: water law violation. Commercial collection without permit: subject to water court action. Fines vary.
Westminster, CO
Westminster enforces water conservation under local water provider rules. Watering days designated. CRS §37-60-126 protects xeriscaping from HOA bans.
Westminster, CO
Westminster requires stormwater management for new development and significant property modifications. Runoff must be controlled on-site through retention, d...
See how other cities in Adams County handle rainwater harvesting.
See how Westminster's rainwater harvesting rules stack up against other locations.
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