Stormwater Management: Midway City vs Orange
How do stormwater management rules compare between Midway City, CA and Orange, CA?
Orange has fewer restrictions than Midway City.
Midway City, CA
Orange County
Orange County enforces stormwater quality under two Phase I NPDES MS4 Permits issued by the Santa Ana and San Diego Regional Water Quality Control Boards. Title 9 of the OCCO (Water Quality) and the NPDES program require all construction and development projects in unincorporated areas to implement Best Management Practices (BMPs) and submit a Water Quality Management Plan (WQMP) before grading or building permits are issued.
View full Midway City rules →Orange, CA
Orange County
The City of Orange is mandated by federal NPDES permit R8-2009-0030 to implement stormwater runoff management programs. All development projects must comply with the city's Local Implementation Plan under the Orange County Drainage Area Management Plan.
View full Orange rules →Key Facts Comparison
| Fact | Midway City | Orange |
|---|---|---|
| Governing Code | OCCO Title 9 / NPDES MS4 Permits | - |
| WQMP Required | Before grading/building permit | Most new development |
| ESCP Required | All grading plan submittals | - |
| Permittees | 34 co-permittees countywide | - |
| Enforcement | OC Public Works / RWQCB | - |
| NPDES Permit | - | R8-2009-0030 |
| LID Encouraged | - | Bioswales, permeable paving |
| Report Violations | - | (714) 744-5525 |
Highlighted rows indicate differences between cities.
Midway City FAQ
Do I need a stormwater plan for construction in unincorporated Orange County?
Yes. All non-exempt construction projects must submit a Water Quality Management Plan (WQMP) and an Erosion and Sediment Control Plan (ESCP) before obtaining grading or building permits from OC Development Services.
Who enforces stormwater regulations in unincorporated Orange County?
OC Public Works and the Regional Water Quality Control Boards (Santa Ana for North OC, San Diego for South OC) enforce NPDES stormwater requirements. The H2OC program coordinates regional compliance.
Orange FAQ
Can I wash my car in the driveway in Orange?
Water from car washing should not flow into storm drains carrying soap and pollutants. Use a commercial car wash or wash on a permeable surface that drains to landscaping.
What should I do about a storm drain spill?
Report spills or illegal discharges to the Public Works Department at (714) 744-5525 or Orange County storm water hotline.
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