Stormwater Management: Rialto vs Victorville
How do stormwater management rules compare between Rialto, CA and Victorville, CA?
Rialto and Victorville have similar restriction levels.
Rialto, CA
San Bernardino County
Rialto is a co-permittee on the San Bernardino County MS4 NPDES Permit issued by the Santa Ana Regional Water Quality Control Board (Order R8-2010-0036, NPDES No. CAS618036) and enforces stormwater quality controls under Title 13 (Public Services) of the Municipal Code. All non-stormwater discharges to the storm drain (including wash water, paint, oil, and sediment) are prohibited, and construction sites ≥1 acre require coverage under the Statewide Construction General Permit and a SWPPP.
View full Rialto rules →Victorville, CA
San Bernardino County
Victorville is a permittee under the Lahontan Region NPDES MS4 Phase II permit. New development over 1 acre requires SWPPP. Illicit discharges to storm drains are prohibited under VMC.
View full Victorville rules →Key Facts Comparison
| Fact | Rialto | Victorville |
|---|---|---|
| MS4 Permit | Santa Ana Region Order R8-2010-0036, NPDES CAS618036 | - |
| Construction permit threshold | ≥1 acre disturbed (Construction General Permit) | - |
| Local code | Rialto Municipal Code Title 13 - Public Services | - |
| Priority concern | Perchlorate plume - heightened source control | - |
| State authority | Cal. Water Code §§13260, 13385 | - |
| Permit | - | Phase II MS4 General Permit |
| SWPPP threshold | - | 1+ acre disturbed |
| Illicit discharge | - | Prohibited |
| Post-construction | - | Permanent BMPs required |
| Regional board | - | Lahontan RWQCB oversight |
Highlighted rows indicate differences between cities.
Rialto FAQ
Do I need a permit to wash my driveway in Rialto?
Wash water cannot discharge to the storm drain. Use dry methods (sweeping) or capture and dispose of wash water to the sanitary sewer with permission. Untreated discharge of soap, oil, or sediment to the gutter is an illicit discharge under Title 13.
When do I need a SWPPP for construction?
Any project disturbing 1 acre or more (including smaller sites that are part of a larger common plan) must obtain coverage under the State Construction General Permit and maintain a SWPPP. Smaller sites in Rialto still need erosion and sediment BMPs under the city WQMP.
Can I drain my pool to the street?
Only if dechlorinated and pH-neutral, and only with prior approval. Generally Rialto requires pool water to be discharged to the sanitary sewer via an approved cleanout.
Victorville FAQ
Can I wash my car in the driveway?
Occasional residential washing is typically allowed if runoff is minimized; commercial washing must drain to sewer, not storm drain.
Who enforces construction stormwater?
Building and Safety inspects on-site; State Water Board handles permit violations and fines.
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