Folsom vs Isleton
How do rainwater harvesting rules compare between Folsom, CA and Isleton, CA?
Folsom and Isleton have similar restriction levels.
Folsom, CA
Sacramento County
Rainwater harvesting is legal and encouraged in Folsom under the California Rainwater Capture Act (AB 1750). Rain barrels and cisterns collecting roof runoff for landscape irrigation are permit-exempt up to 5,000 gallons. Folsom Utilities periodically offers rain barrel rebate programs through Regional Water Authority partnerships.
View full Folsom rules →Isleton, CA
Sacramento County
Rainwater harvesting is legal and encouraged in unincorporated Sacramento County. Rooftop collection for outdoor landscape use requires no permit. Larger cistern systems and indoor non-potable use require plumbing permits.
View full Isleton rules →Key Facts Comparison
| Fact | Folsom | Isleton |
|---|---|---|
| State Law | AB 1750 (Wat §10574) | AB 1750 Rainwater Capture Act |
| Permit | None under 5,000 gal | - |
| Use | Landscape irrigation | - |
| Potable Use | Plumbing permit req. | - |
| Mosquitoes | Must screen (MVCD) | - |
| Barrels | - | No permit for outdoor use |
| Cisterns | - | Plumbing permit if indoor use |
| Mosquito | - | Covered inlets required |
| Rebates | - | Periodically available |
Highlighted rows indicate differences between cities.
Folsom FAQ
Do I need a permit for a rain barrel in Folsom?
No. Residential rain barrels and cisterns up to 5,000 gallons for outdoor landscape irrigation are permit-exempt under California law. Just make sure inlets are screened to prevent mosquito breeding.
Can I use harvested rainwater during drought restrictions?
Yes. Harvested rainwater is not subject to municipal water use restrictions — it's your own supply. However, you still cannot allow runoff onto hard surfaces.
Isleton FAQ
Do I need a permit for a rain barrel?
Generally no, for typical 50 to 100 gallon outdoor barrels used for landscape watering.
Can I use rainwater to flush toilets?
Yes, but the system must be permitted and installed to California Plumbing Code Chapter 17.
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