Stormwater Management: Fallbrook vs San Diego
How do stormwater management rules compare between Fallbrook, CA and San Diego, CA?
Fallbrook and San Diego have similar restriction levels.
Fallbrook, CA
San Diego County
San Diego County adopted the Watershed Protection, Stormwater Management, and Discharge Control Ordinance (WPO) in 2016. The ordinance prohibits pollutant discharge to storm drains and requires stormwater management for development projects. All properties must prevent illicit discharges.
View full Fallbrook rules →San Diego, CA
San Diego County
San Diego's stormwater ordinance under SDMC §§43.0301-43.0312 controls non-stormwater discharges to protect water quality in bays, beaches, and waterways. The City operates under the Phase I MS4 Permit issued by the San Diego Regional Water Quality Control Board. New development must comply with the City's Stormwater Standards Manual for construction and post-construction BMPs. Illicit discharge to storm drains is a violation under SDMC §43.0302.
View full San Diego rules →Key Facts Comparison
| Fact | Fallbrook | San Diego |
|---|---|---|
| Ordinance | Watershed Protection Ordinance (2016) | - |
| Discharge | Pollutant discharge to storm drains prohibited | - |
| Development | SWQMP required for qualifying projects | - |
| Construction | Erosion/sediment control BMPs required | - |
| Manual | County Stormwater Standards Manual | - |
| Code Section | - | SDMC §§43.0301-43.0312 |
| MS4 Permit | - | Phase I permit from SD Regional Water Quality Board |
| Illicit Discharge | - | Prohibited per §43.0302 |
| BMPs | - | Required for new development per Stormwater Standards Manual |
| Enforcement | - | Stormwater Department Code Enforcement teams |
Highlighted rows indicate differences between cities.
Fallbrook FAQ
What is the stormwater ordinance in San Diego County?
The Watershed Protection Ordinance (WPO) prohibits pollutant discharge to storm drains and requires stormwater management for development projects. It was adopted in 2016 to protect water quality.
Do I need a stormwater plan for my construction project?
Development projects of certain sizes must prepare Stormwater Quality Management Plans (SWQMPs). Check the County Stormwater Standards Manual for thresholds and requirements.
Can I wash my car and let water run into the storm drain?
No. Wash water containing soap, oil, and chemicals should not be discharged to storm drains. Use a commercial car wash that recycles water or wash on permeable surfaces where water can infiltrate the ground.
San Diego FAQ
Can I wash my car in the driveway?
Allowing wash water to flow into storm drains may violate SDMC §43.0302. Use a commercial car wash or wash on a permeable surface where water can infiltrate rather than drain to the street.
What are BMPs?
Best Management Practices are erosion control and pollution prevention measures required during and after construction to prevent pollutants from entering the storm drain system.
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