Stormwater Management: Hesperia vs Rancho Cucamonga
How do stormwater management rules compare between Hesperia, CA and Rancho Cucamonga, CA?
Hesperia and Rancho Cucamonga have similar restriction levels.
Hesperia, CA
San Bernardino County
Hesperia is a regulated small MS4 under the California State Water Resources Control Board's Phase II General Permit (Order WQ 2013-0001-DWQ as amended). The city's Storm Water Management Program (SWMP) is enforced by the Hesperia Engineering Department. All construction sites disturbing one acre or more must obtain coverage under the statewide Construction General Permit (Order 2022-0057-DWQ) and prepare a SWPPP; smaller residential sites must implement Erosion and Sediment Control Plans (ESCPs). Post-construction Water Quality Management Plans (WQMPs) are required for development projects per the Phase II Permit's post-construction provisions. Discharge of anything other than uncontaminated stormwater into the MS4 is prohibited.
View full Hesperia rules →Rancho Cucamonga, CA
San Bernardino County
Rancho Cucamonga enforces the San Bernardino County MS4 stormwater permit prohibiting non-stormwater discharges to the storm drain. Construction sites over one acre need a state SWPPP and WDID number.
View full Rancho Cucamonga rules →Key Facts Comparison
| Fact | Hesperia | Rancho Cucamonga |
|---|---|---|
| Permit basis | Phase II MS4 Order WQ 2013-0001-DWQ (as amended) | - |
| Regional oversight | Lahontan Regional Water Quality Control Board (Mojave River Watershed) | - |
| SWPPP trigger | Construction projects ≥1 acre (statewide Construction General Permit 2022-0057-DWQ) | - |
| Permitting office | Hesperia Engineering Department, 9700 Seventh Ave, (760) 947-1000 | - |
| MS4 permit | - | CAS618036 |
| SWPPP threshold | - | 1 acre disturbance |
| State system | - | SMARTS WDID |
| Prohibited | - | Non-stormwater discharges |
| Contact | - | (909) 477-2740 |
Highlighted rows indicate differences between cities.
Hesperia FAQ
Do I need a SWPPP for a single-family home?
Most single-family residential lots are under one acre and do not require a statewide Construction General Permit SWPPP, but the city's SWMP requires Erosion and Sediment Control Plans (ESCPs) and a stabilized construction entrance for residential builds. Larger residential subdivisions (≥1 acre of disturbed soil) require a SWPPP through the State Water Board's SMARTS system.
Who regulates stormwater in Hesperia?
Locally, the Hesperia Engineering Department administers the SWMP. Regionally, the Lahontan Regional Water Quality Control Board oversees compliance with the statewide Phase II MS4 General Permit (Order WQ 2013-0001-DWQ as amended).
Rancho Cucamonga FAQ
Can I wash my car in my driveway?
Yes, residential car washing is allowed but avoid soap runoff into storm drains; commercial washing requires wastewater capture.
Do small home remodels need a SWPPP?
Projects under one acre don't need a state SWPPP but must still use BMPs like silt fencing and covered stockpiles.
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