Rainwater Harvesting: El Cajon vs Fallbrook
How do rainwater harvesting rules compare between El Cajon, CA and Fallbrook, CA?
El Cajon and Fallbrook have similar restriction levels.
El Cajon, CA
San Diego County
Rainwater harvesting is legal and encouraged in El Cajon. California AB 1750 (2012) allows residential rainwater collection without a permit. Rain barrels under 5,000 gallons are exempt from building permits. The Helix Water District provides rebates for rain barrel installations.
View full El Cajon rules →Fallbrook, CA
San Diego County
Rainwater harvesting is legal and encouraged in San Diego County. California law (AB 1750) explicitly allows residential rainwater capture. No county permit is required for rain barrels. The County offers rebates for rain barrel installations through water conservation programs.
View full Fallbrook rules →Key Facts Comparison
| Fact | El Cajon | Fallbrook |
|---|---|---|
| Legal Status | Legal — AB 1750 (2012) | Legal and encouraged |
| Permit Exempt | Under 5,000 gallons | - |
| Approved Uses | Irrigation, non-potable only | - |
| Rebates | Helix Water District | Available through water districts |
| Vector Control | Prevent standing water mosquitoes | - |
| State Law | - | AB 1750 — rainwater capture permitted |
| Small Systems | - | No permit for rain barrels |
| Large Systems | - | May need building permit |
Highlighted rows indicate differences between cities.
El Cajon FAQ
Can I collect rainwater in El Cajon?
Yes. California AB 1750 allows residential rainwater collection. Rain barrels under 5,000 gallons are exempt from building permits.
Are there rebates for rain barrels in El Cajon?
The Helix Water District periodically offers rebates for rain barrel purchases. Check their website or call for current program availability.
Can I use collected rainwater for drinking?
No. Collected rainwater is approved for non-potable uses such as landscape irrigation and car washing. Treatment would be required for potable use.
Fallbrook FAQ
Is rainwater harvesting legal in San Diego County?
Yes. California law (AB 1750) explicitly permits residential rainwater capture. The County encourages it as a water conservation measure.
Do I need a permit for a rain barrel?
No. Small rain barrel systems do not require a county building permit. Larger cistern systems or systems connected to plumbing may require permits.
Can I get a rebate for a rain barrel?
Some local water districts in San Diego County offer rebates for rain barrel and cistern installations. Check with your specific water provider for current programs.
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