Stormwater Management: Rocklin vs Roseville
How do stormwater management rules compare between Rocklin, CA and Roseville, CA?
Rocklin and Roseville have similar restriction levels.
Rocklin, CA
Placer County
Rocklin Municipal Code Chapter 8.30 (Stormwater Runoff Pollution Control) prohibits non-stormwater discharges into the City's storm drain system. Rocklin is a Phase II Small MS4 permittee under State Water Board Order WQO 2013-0001-DWQ (NPDES CAS000004) and enforces illicit discharge detection and elimination (IDDE) through the Environmental Services Division.
View full Rocklin rules →Roseville, CA
Placer County
Roseville requires stormwater management for new development and significant property modifications. Runoff must be controlled on-site through retention, detention, or infiltration systems.
View full Roseville rules →Key Facts Comparison
| Fact | Rocklin | Roseville |
|---|---|---|
| Local code | Rocklin MC Ch. 8.30 Stormwater Runoff Pollution Control | - |
| MS4 permit | State Phase II General Permit WQO 2013-0001-DWQ (NPDES CAS000004) | - |
| Regional board | Central Valley RWQCB | - |
| Report illicit discharge | Rocklin Environmental Services / rocklin.ca.us/stormwater | - |
| New Development | - | Stormwater plan required |
| Runoff Control | - | On-site retention |
| Maintenance | - | Owner responsibility |
| Topic | - | Stormwater |
Highlighted rows indicate differences between cities.
Rocklin FAQ
Can I hose paint, soap, or pet waste into the gutter?
No. Rocklin MC Ch. 8.30 prohibits non-stormwater discharges to the storm drain system. Wash water, paint, sediment, and pet waste must be kept out of gutters and creeks.
Does my construction site need an NPDES permit?
Yes — under Rocklin MC §8.30.060, any site subject to the State Construction General Permit (typically 1 acre or more of soil disturbance) must show proof of NPDES coverage to the City's Enforcement Official.
Roseville FAQ
Do I need a stormwater plan for my project?
Generally required for new construction and major renovations that increase impervious surface area. Small residential projects may be exempt.
What is an illicit discharge?
Any non-stormwater substance entering the storm drain system, including paint, oil, chemicals, or sediment. Report violations to Roseville public works.
Compare other topics
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