Rainwater Harvesting: Altadena vs Downey
How do rainwater harvesting rules compare between Altadena, CA and Downey, CA?
Altadena and Downey have similar restriction levels.
Altadena, CA
Los Angeles County
Rainwater harvesting is legal and actively encouraged in unincorporated LA County. LADWP offers rebates for rain barrels. The LACFCD promotes distributed stormwater capture projects including rain gardens and rain barrels. No permits required for residential collection systems.
View full Altadena rules →Downey, CA
Los Angeles County
Rainwater harvesting is legal and encouraged in California. No permit required for residential rain barrels. AB 1750 (2012) protects the right to collect rainwater for landscaping and non-potable uses.
View full Downey rules →Key Facts Comparison
| Fact | Altadena | Downey |
|---|---|---|
| Legal Status | Legal, no permit required | - |
| Rebates | LADWP and water district programs | Often available from water district |
| LACFCD | Promotes distributed capture | - |
| Uses | Irrigation, non-potable purposes | - |
| State Law | - | AB 1750 - legal to collect |
| Permit | - | Not required for rain barrels |
| Use | - | Landscaping and non-potable |
Highlighted rows indicate differences between cities.
Altadena FAQ
Is rainwater harvesting legal in LA County?
Yes. California Water Code 10573-10574 explicitly permits residential rainwater collection. No permit is needed for systems under 5,000 gallons. It's actively encouraged for water conservation and stormwater management.
Can I use rainwater for drinking?
Captured rainwater can be used for irrigation and non-potable purposes. Using it for drinking water requires treatment and is subject to additional regulations. Most residential use is for landscape irrigation.
Are there rebates for rain barrels in LA County?
Some water districts offer $35-$75 rain barrel rebates. Check with your specific water provider. The LA County Flood Control District's Safe Clean Water Program also promotes rainwater capture. Visit safecleanwaterla.org for resources.
Downey FAQ
Can I collect rainwater legally?
Yes. California allows residential rainwater harvesting without significant restrictions.
Do I need a permit for rain barrels?
Standard rain barrels typically do not need permits. Large cistern systems may require building permits.
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