Skip to main content
CityRuleLookup

San Joaquin County, CA Environmental Rules: Erosion Control (2026)

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

Key Facts

SWPPP due
Before building permit/final map
Applies to
Developers, contractors
Standard used
State Water Board BMPs
Enforced by
Public Works Director

Summary

Developers and contractors must submit a Storm Water Pollution Prevention Plan before getting a building permit or final map approval in unincorporated San Joaquin County.

City-specific rules exist: Tracy, Lodi, Manteca, and Stockton have their own erosion control rules that differ from San Joaquin County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

The Director may adopt regulations establishing controls (I) on the volume and rate of storm water runoff for each industrial discharger, discharger associated with construction activity, or other discharger, described in any general Storm Water Permit addressing such discharges, as may be adopted by the United States Environmental Protection Agency, the State Water Resources Control Board, or the California Regional Water Quality Control Board, Central Valley Region, or (II) for discharges from new developments and redevelopments as may be appropriate to minimize the discharge and transport of pollutants. The Director may require any developer or construction contractor performing work in the County to submit a Storm Water Pollution Prevention Plan prior to final map approval by the County or prior to issuance of a building permit by the County, whichever first occurs.

Source: CASQA BMP HandbookView official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Development Title: Supplement 3 | Code of Ordinances: Supplement 80 Update 2).

Full Breakdown

County Code §5-10110(a) lets the Director of Public Works require any developer or construction contractor to submit a Storm Water Pollution Prevention Plan (SWPPP) prior to final map approval or building permit issuance, whichever comes first. The Director may also adopt controls on runoff volume and rate tied to State Water Resources Control Board and Central Valley Regional Water Quality Control Board general construction and industrial storm water permits. Anyone required to file an NOI for a general Storm Water Permit must give the Director a copy of the application, permit and SWPPP.

Violations & Fines

Enforced by the Director of Public Works; a missing SWPPP can hold up final map recordation or building permit issuance until one is filed (§5-10110).

Frequently Asked Questions

Does San Joaquin County require an erosion-control plan for construction?
Yes, §5-10110(a) lets the Director require a Storm Water Pollution Prevention Plan before final map approval or a building permit.
Who reviews the SWPPP?
The County Department of Public Works, which also enforces the state's General Construction Activities Storm Water Permit BMPs.

Sources & Official References

Other rules in San Joaquin County

All San Joaquin County rules

California rules heatmap·Compare San Joaquin County to another location·View the California environmental rules overview

Get notified when Erosion Control in San Joaquin County, CA changes

We'll email you the moment we detect a change in the code. No spam, unsubscribe anytime.

We'll never sell or share your email. One-click unsubscribe in every email.

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.

Erosion Control in Cities Across San Joaquin County