Stormwater Management: Jurupa Valley vs Menifee
How do stormwater management rules compare between Jurupa Valley, CA and Menifee, CA?
Menifee has fewer restrictions than Jurupa Valley.
Jurupa Valley, CA
Riverside County
Jurupa Valley Municipal Code Title 13, Chapter 13.40 (Urban Runoff and Stormwater Protection) prohibits non-stormwater discharges to the MS4 and implements the Santa Ana Regional Water Quality Control Board's MS4 NPDES permit (Order R8-2010-0033) for Riverside County co-permittees. Construction sites disturbing 1 acre or more must obtain coverage under the State Construction General Permit (SWRCB Order 2022-0057-DWQ) and prepare a Stormwater Pollution Prevention Plan (SWPPP).
View full Jurupa Valley rules →Menifee, CA
Riverside County
Menifee discharges urban runoff under Riverside County's NPDES MS4 permit. The city is a co-permittee in the Santa Margarita Region (San Diego RWQCB) for the southern Murrieta Creek/Santa Margarita watershed and the Santa Ana Region (Region 8) for the northern portion of the city. Developers must prepare a Water Quality Management Plan (WQMP) and follow Best Management Practices (BMPs) for construction-phase runoff. Illicit non-stormwater discharges (washwater, paint, oil, pool drainage with chlorine) to storm drains are prohibited.
View full Menifee rules →Key Facts Comparison
| Fact | Jurupa Valley | Menifee |
|---|---|---|
| Code citation | Jurupa Valley Code Title 13, Ch. 13.40 (Urban Runoff/Stormwater Protection) | - |
| MS4 permit | Santa Ana RWQCB Order R8-2010-0033 (Riverside County MS4 NPDES) | - |
| Construction threshold | 1 acre or more disturbed = State Construction General Permit + SWPPP required | - |
| LID threshold | New/redevelopment ≥5,000 sq ft impervious = WQMP/LID required | - |
| Regulatory authority | - | Santa Ana RWQCB (R8) — north Menifee / San Diego RWQCB (R9) — south Menifee |
| Riverside County permit | - | Order R8-2010-0033 (Santa Ana) / R9-2013-0001 (Santa Margarita) |
| WQMP trigger | - | 10,000 sq ft new/redevelopment + priority projects |
| Design storm | - | 85th-percentile 24-hour event (LID retention) |
| Construction permit | - | State Construction General Permit at ≥1 acre disturbance |
Highlighted rows indicate differences between cities.
Jurupa Valley FAQ
Can I wash my car in the driveway?
Individual residential car washing is a conditionally allowed discharge under most Phase I MS4 permits, but commercial washing must capture wash water. Avoid soaps reaching the storm drain.
Can I drain my pool to the street?
Only after dechlorination (chlorine residual non-detect) and no acidic/salty water. Pool acid and saltwater pool discharges are prohibited.
Menifee FAQ
Can I drain my pool to the street?
Only after dechlorination (no detectable chlorine) and pH neutralization (6.5–8.5), and only at a slow trickle that does not cause erosion. Chlorinated discharges are illicit and prohibited under both the Santa Ana and San Diego MS4 permits.
Do I need a SWPPP to build a house?
If your construction site disturbs 1 acre or more (including grading, staging, and stockpiles), yes — file a Notice of Intent on SMARTS and have a QSD prepare a SWPPP. Smaller sites still need a city-reviewed Erosion and Sediment Control Plan.
Does Menifee enforce its own stormwater rules or just the County's?
Menifee is a co-permittee, meaning it is directly responsible for enforcing the MS4 permit within city limits. Inspections, plan checks, and citations are handled by city Engineering / Public Works.
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