Rainwater Harvesting: Carmichael vs Elk Grove
How do rainwater harvesting rules compare between Carmichael, CA and Elk Grove, CA?
Carmichael and Elk Grove have similar restriction levels.
Carmichael, 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 Carmichael rules →Elk Grove, CA
Sacramento County
Rainwater harvesting is legal and encouraged in Elk Grove under California's Rainwater Capture Act of 2012 (AB 1750). Rooftop rain barrels do not require a permit. Larger cisterns or systems connected to indoor plumbing require building and plumbing permits.
View full Elk Grove rules →Key Facts Comparison
| Fact | Carmichael | Elk Grove |
|---|---|---|
| State Law | AB 1750 Rainwater Capture Act | - |
| Barrels | No permit for outdoor use | - |
| Cisterns | Plumbing permit if indoor use | - |
| Mosquito | Covered inlets required | - |
| Rebates | Periodically available | RWA/Cal Water programs |
| State law | - | Rainwater Capture Act (AB 1750) |
| Rain barrel | - | No permit typical |
| Large cistern | - | Building & plumbing permit |
| Use | - | Non-potable onsite |
Highlighted rows indicate differences between cities.
Carmichael 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.
Elk Grove FAQ
Do I need a permit for a 55-gallon rain barrel?
No. Standard rain barrels for outdoor irrigation are exempt from permits.
Can I plumb harvested rainwater to my toilets?
Yes, but the system needs a building/plumbing permit with backflow prevention and UPC-compliant design.
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