Rainwater Harvesting: Hayward vs Livermore
How do rainwater harvesting rules compare between Hayward, CA and Livermore, CA?
Hayward and Livermore have similar restriction levels.
Hayward, CA
Alameda County
Rainwater harvesting is encouraged. Rain barrels up to 5,000 gallons are permit-exempt under California Rainwater Capture Act.
View full Hayward rules →Livermore, CA
Alameda County
Rainwater harvesting from rooftops is legal in Livermore under the 2012 CA Rainwater Capture Act. No permit for simple rain barrels; larger cisterns may need permits.
View full Livermore rules →Key Facts Comparison
| Fact | Hayward | Livermore |
|---|---|---|
| No permit | Under 5,000 gal, outdoor use | - |
| Over 5,000 gal | Plumbing permit | - |
| Screen | 1/16 inch required | - |
| Rebates | EBMUD WaterSmart | Check Zone 7 / Cal Water |
| Overflow | To pervious area | - |
| State Law | - | AB 1750 (2012) |
| Small Barrels | - | No permit |
| Large Tanks | - | Permit required |
| Indoor Use | - | Requires backflow |
Highlighted rows indicate differences between cities.
Hayward FAQ
Can I use rainwater inside my home?
Only with a permitted plumbing system that meets California Plumbing Code Chapter 17 treatment standards.
How big can my rain barrel be?
Up to 5,000 gallons without a permit for gravity-fed outdoor irrigation.
Livermore FAQ
Do I need a permit for a 55-gallon rain barrel in Livermore?
No. Simple above-ground rain barrels for outdoor irrigation are exempt from permits under state and local rules.
Can I use captured rainwater indoors?
Only with permitted plumbing, filtration, and backflow prevention. Outdoor irrigation is the typical permit-free use.
Compare other topics
See how Hayward and Livermore compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool