Environmental Rules in San Joaquin County, CA (2026)

San Joaquin County Code § 5-10101

No person shall permit or cause the discharge of any wastewater, pollutant, substance or material of any kind into the County storm drainage system which interferes with the operation or performance of the County storm drainage system or which violates any condition of the County NPDES Permit or any other Federal, State, or local regulation.

San Joaquin County Code § 5-10110(a)

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 ...

FEMA Flood Maps - National Flood Insurance Program

Floods occur naturally and can happen almost anywhere. They may not even be near a body of water, although river and coastal flooding are two of the most common types. Heavy rains, poor drainage, and even nearby construction projects can put you at risk for flood damage. Flood maps are one tool that communities use to know which areas have the highest risk of flooding. FEMA maintains and update...