Lynwood, CA Environmental Rules: Stormwater Management (2026)

Lynwood Municipal Code Chapter 14, Article 12 was adopted because the city is a copermittee under the Los Angeles County municipal NPDES permit (order 96-054, NPDES CAS614001) issued under the federal Clean Water Act, which obligates Lynwood to prohibit nonstormwater discharges into the municipal storm drain system (MS4). Section 14-12.6 bans illicit connections and discharges to the MS4, bans littering onto streets, sidewalks, storm drains, or waterways, and bans dumping leaves, dirt, or landscape debris into storm drains. It separately lists prohibited nonstormwater discharges unless authorized by a separate NPDES permit, including untreated wash water from gas stations and auto repair shops, mobile auto or carpet washing wastewater, runoff from leaking vehicle repair areas, runoff from hazardous-material storage, commercial pool filter backwash, washout from concrete trucks, and banned pesticides or herbicides.

Section 14-12.9 requires industrial, commercial, and construction dischargers to comply with applicable state or federal general or individual NPDES permits, and the Director of Public Works can require proof of that compliance before issuing a grading, building, or occupancy permit. Section 14-12.10 makes any violation a public nuisance abatable by an authorized enforcement officer, lets the City Attorney bring civil or criminal action, and gives enforcement officers power to issue cease-and-desist orders and notices to clean up material likely to enter the storm drain system.