Yes, rainwater collection is legal in Utah, but subject to Utah Division of Water Rights (UDWR) regulations under Utah Code § 73-3-1.5. Residents may collect up to 2,500 gallons of rainwater for non-potable uses without a permit, provided systems meet structural and safety standards. Commercial or large-scale collection may require additional compliance with local water rights and stormwater management rules.
Key Regulations for Rainwater Collection in Utah
- Volume Limits: Households may store up to 2,500 gallons without a permit, as per UDWR guidelines. Exceeding this triggers water rights assessment under Utah Code § 73-3-1.5.
- Use Restrictions: Collected rainwater must be used for non-potable purposes (e.g., irrigation, livestock watering). Potable use requires treatment under Utah Administrative Code R309-200.
- Local Permits: Salt Lake County and other municipalities may impose additional permitting for structural integrity or flood control compliance, particularly in areas with strict stormwater regulations.
Recent 2026 compliance shifts emphasize dual-use systems (e.g., greywater integration) and mandatory reporting for systems exceeding 5,000 gallons. The UDWR’s 2024 Rainwater Harvesting Guidelines clarify enforcement priorities, focusing on unauthorized diversions from natural watercourses. Always verify county-specific ordinances, as Wasatch Front municipalities often impose stricter oversight.