Environmental Rules in Antioch, CA (2026)

2 verified environmental rules for Antioch, California, sourced directly from the municipal code and official government pages.

Verified from official government sources

Stormwater Management

Antioch Municipal Code Chapter 6-9 prohibits any non-stormwater discharge to the MS4 storm drain system under CCCWP MRP 3.0 requirements. Violations are misdemeanors with administrative penalties up to $10,000 per day under CA Water Code 13385.

Environmental: Illicit Discharge

Heavy Restrictions

Full ordinance details →Official source ↗

Flood Zones

Portions of Antioch along the San Joaquin River and creek tributaries are mapped in FEMA Special Flood Hazard Areas (SFHA). AMC Chapter 8-4 Floodplain Management requires elevation certificates and flood-resistant construction in Zone A/AE areas.

Environmental: Flood Zones

Some Restrictions

Full ordinance details →Official source ↗

Looking for Contra Costa County county-wide rules?

County ordinances apply to unincorporated areas and may supplement Antioch city rules.

Environmental Rules in Contra Costa County →