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Placer County, CA Environmental Rules: Stormwater Management (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Enforcing agency
Placer County Department of Public Works
Coverage
Unincorporated Placer County only
Illicit connection cutoff
Disconnect within 30 days of adoption
Spill reporting window
Notify enforcement agency within 24 hours
Compliance order appeal
10 days to Director of Public Works
Further appeal
15 days to Board of Supervisors

Summary

Placer County's Stormwater Quality Ordinance bans illicit discharges into the county storm drain system across the unincorporated area. The Department of Public Works enforces the rule against dumping, construction runoff and illegal storm-drain hookups, with notices of noncompliance, compliance orders, citations and misdemeanor charges available for violations.

City-specific rules exist: Roseville has its own stormwater management rules that differ from Placer County's county-level regulations. If you live in Roseville, check the city-specific page instead.

Except as provided in Section 8.28.090 of this article, it is unlawful for any person to make or cause to be made any illicit discharge into the storm drain system. Notwithstanding the exemptions provided by Section 8.28.090, if the enforcement agency determines any otherwise exempt discharge causes or significantly contributes to violations of any plan standard, or conveys significant quantities of pollutants to surface water(s) or watercourse(s), or is a danger to public health or safety, such discharge shall be prohibited from entering the storm drain system.

Full Breakdown

080). 090, such as landscape irrigation, individual car washing or dechlorinated pool water, become prohibited if the Department of Public Works, the designated enforcement agency, finds they significantly contribute to pollution or endanger public health. 150 layers on affirmative duties: property owners must maintain best management practices, disconnect any illicit connection within 30 days of the article's adoption, keep paved sidewalks free of dirt and litter, and control runoff from construction sites and paved areas, drawing on the West Placer and East Placer Storm Water Quality Design Manuals where applicable. 160). 180-190); each day of violation is a separate offense. 200).

Violations & Fines

Violations are infractions or, at the county's discretion, misdemeanors under Article 1.24, with each day of noncompliance charged as a separate offense (§ 8.28.190(G)). The county can also bring a civil action seeking injunctive relief, reimbursement of investigation costs, and compensatory damages for water-quality loss (§ 8.28.210), and may urgently abate an ongoing discharge that threatens public health, billing the cost to the property owner (§ 8.28.220).

Frequently Asked Questions

Is car washing at home banned under Placer County's stormwater rule?
No. Section 8.28.090 exempts individual residential car washing, along with landscape irrigation, dechlorinated pool discharges and a handful of other listed activities, from the illicit-discharge prohibition, unless it is found to significantly pollute a waterway.
Who enforces Placer County's stormwater ordinance?
The Placer County Department of Public Works is the enforcement agency under § 8.28.050 and can authorize other county staff as enforcement officials to inspect property, issue notices, and pursue citations under Article 8.28.
What happens if I don't disconnect an illegal pipe into the storm drain?
Section 8.28.150(C) required property owners to disconnect any illicit connection within 30 days of the ordinance's adoption; maintaining one now can draw a notice of noncompliance, an administrative compliance order, and infraction or misdemeanor charges under §§ 8.28.180-190.

Sources & Official References

Other rules in Placer County

All Placer County rules

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