Stormwater Management: Chino vs San Bernardino
How do stormwater management rules compare between Chino, CA and San Bernardino, CA?
Chino has fewer restrictions than San Bernardino.
Chino, CA
San Bernardino County
The City of Chino is a co-permittee under the San Bernardino County Area-Wide NPDES Municipal Storm Water Permit (Order R8-2010-0036, adopted January 10, 2010 by the Santa Ana Regional Water Quality Control Board), with the San Bernardino County Flood Control District as Principal Permittee. The MS4 discharges to flood-control channels, San Antonio Channel, Cypress Channel, Chino Creek, and ultimately the Prado Basin and Santa Ana River. Only rainwater and a narrow list of allowed non-stormwater flows may enter the storm drain system.
View full Chino rules →San Bernardino, CA
San Bernardino County
San Bernardino regulates stormwater under its MS4 NPDES permit through the Santa Ana Regional Water Quality Control Board. Illicit discharges are prohibited and LID features are required for qualifying development.
View full San Bernardino rules →Key Facts Comparison
| Fact | Chino | San Bernardino |
|---|---|---|
| MS4 Permit | Order R8-2010-0036 (San Bernardino County area-wide) | - |
| Principal permittee | San Bernardino County Flood Control District | - |
| Receiving waters | San Antonio Channel, Cypress Channel, Chino Creek → Prado Basin → Santa Ana River | - |
| Development trigger | Water Quality Management Plan (WQMP) with LID measures | - |
| Construction trigger | 1 acre disturbance = CGP + SWPPP | - |
| Report illicit discharge | Chino Police (909) 334-3000 / Public Works (909) 334-3250 | - |
| Permit Authority | - | Santa Ana RWQCB MS4 NPDES |
| LID Retention | - | First 3/4 inch rainfall |
| SWPPP Threshold | - | 1 acre construction |
| Max Daily Penalty | - | 25,000 dollars (Water Code 13385) |
| Receiving Water | - | Santa Ana River watershed |
Highlighted rows indicate differences between cities.
Chino FAQ
Can I wash my car in the driveway in Chino?
Occasional residential car washing is generally allowed as a non-stormwater discharge under the San Bernardino MS4 permit, but commercial mobile detailers and fleet washers must capture or divert wash water. Avoid heavy detergent use and never wash near a storm drain inlet.
How do I report illegal dumping into a Chino storm drain?
Call Chino Police at (909) 334-3000 during business hours or (909) 628-1234 after hours. For paint, oil, or chemical spills also call the CalEPA 24-hour spill line at 1-800-852-7550.
Do I need a Water Quality Management Plan for my project?
Yes if your project is a 'priority development project' under Order R8-2010-0036 — typically creating or replacing 5,000+ sq ft of impervious surface, restaurants, auto-service uses, parking lots, or hillside development. The WQMP is submitted with grading/building applications to Chino Engineering.
Can I drain my swimming pool to the gutter?
Only after fully dechlorinating the water (let it sit 24-48 hours after stopping chemical additions, test for zero residual chlorine) and neutralizing pH. Chlorinated pool water is an illicit discharge.
San Bernardino FAQ
Can I wash my car in my San Bernardino driveway?
Residential car washing is generally exempt if runoff does not carry soap or sediment to the storm drain. Use biodegradable cleaners, wash on grass or gravel where water absorbs into the soil, or take the vehicle to a commercial car wash that captures wastewater.
How do I drain my swimming pool without violating stormwater rules?
Dechlorinate pool water for at least 48 hours before discharging, confirm no visible color or odor, and drain slowly to your sewer cleanout where allowed or to landscaped areas that absorb water. Never drain directly to a street or storm drain.
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