Fresno County, CA Landscaping Rules: Rainwater Harvesting (2026)
Key Facts
- State Law
- AB 1750
- Rain Barrels
- No permit residential
- Plumbing
- CPC Ch. 17 for systems
- Use
- Irrigation allowed
Summary
Rainwater harvesting is legal and encouraged under CA AB 1750 (Rainwater Capture Act of 2012). Residential rain barrels don't require permits. Systems >5,000 gallons or connected to plumbing require plan review under CPC Chapter 17.
Water Code - WAT DIVISION 6. CONSERVATION, DEVELOPMENT, AND UTILIZATION OF STATE WATER RESOURCES [10000 - 12999] PART 2.4. Rainwater Capture Act of 2012 [10570 - 10574] 10574. Use of rainwater collected from rooftops does not require a water right permit pursuant to Section 1201. (Added by Stats. 2012, Ch. 537, Sec. 2. (AB 1750) Effective January 1, 2013.)
Full Breakdown
AB 1750 established rainwater capture as a legal water source in California. Residential rain barrels of reasonable size don't require permit. Larger cisterns and systems with plumbing connections are governed by CA Plumbing Code Chapter 17 (alternate water sources). Fresno County has no additional restrictions. Captured rainwater legal for irrigation; indoor non-potable use (toilets) requires additional treatment and permitting. In Central Valley agricultural areas, surface water rights follow separate appropriative/riparian frameworks.
Violations & Fines
Unpermitted large cistern installations: stop-work order. Cross-connection to potable plumbing without backflow: code violation.
Frequently Asked Questions
Do I need a permit for a rain barrel?
Can I use captured rainwater for drinking?
Sources & Official References
Other rules in Fresno County
California rules heatmap·Compare Fresno County to another location·View the California landscaping rules overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.