Sonora, CA Landscaping Rules: Rainwater Harvesting (2026)
Key Facts
- State Law
- AB 1750 permits collection
- Permit Required
- No for basic rain barrels
- Water District
- Tuolumne Utilities District
- Mosquito Prevention
- Screen all openings
Summary
Sonora permits residential rainwater harvesting under California state law (AB 1750). No local permit is required for rain barrel installations. Rainwater collection supports water conservation in the Sierra Nevada foothills where Tuolumne Utilities District manages water supply.
10573. Solely for the purposes of this part, and unless the context otherwise requires, the following definitions govern the construction of this part:
(a) “Developed or developing lands” means lands that have one or more of the characteristics described in subparagraphs (A) to (C), inclusive, of paragraph (4) of subdivision (b) of Section 56375.3 of the Government Code.
(b) “Rain barrel system” is a type of rainwater capture system that does not use electricity or a water pump and is not connected to or reliant on a potable water system.
(c) “Rainwater” means precipitation on any public or private parcel that has not entered an offsite storm drain system or channel, a flood control channel, or any other stream channel, and has not previously been put to beneficial use.
(d) “Rainwater capture system” means a facility designed to capture, retain, and store rainwater flowing off a building rooftop for subsequent onsite use.
(e) “Stormwater” means temporary surface water runoff and drainage generated by immediately preceding storms. This definition shall be interpreted consistent with the definition of “stormwater” in Section 122.26 of Title 40 of the Code of Federal Regulations. 10574. Use of rainwater collected from rooftops does not require a water right permit pursuant to Section 1201.
Full Breakdown
California AB 1750 (2012) established the statewide right to collect rainwater from rooftops for landscape irrigation and non-potable uses without a permit. Sonora residents may install rain barrels and cisterns without city approval. Larger rainwater harvesting systems with underground storage may require a building permit for structural and plumbing connections. Collected rainwater should not be used for drinking water without treatment. The Tuolumne Utilities District encourages water conservation practices including rainwater collection. Mosquito prevention measures such as screened openings are recommended for standing water storage.
Violations & Fines
No penalties exist for basic rainwater collection. Large systems installed without required building permits may face standard permit violation fines. Standing water creating mosquito breeding conditions may trigger health department action.
Frequently Asked Questions
Can I collect rainwater in Sonora?
Do I need a permit for a large rainwater cistern in Sonora?
Can I drink collected rainwater in Sonora?
Sources & Official References
Other rules in Sonora
California rules heatmap·Compare Sonora to another location·View the California landscaping rules overview
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