This website has been authorized by the Palm Beach County MS4 NPDES (PBC NPDES) Steering Committee as a resource for all permittees within the county. It is intended that this site will provide the permittee with helpful information on understanding and complying with the requirements of the MS4 NPDES permit.

The MS4 Permit

The Municipal Separate Storm Sewer System (MS4) National Pollutant Discharge Elimination System (NPDES) permit allows a permittee to discharge stormwater from its stormwater collection and conveyance system into a receiving water owned by the state and/or federal government. The requirements detailed in the permit are intended to reduce stormwater pollutant discharges into those receiving water bodies.

In 1987, the U.S. Environmental Protection Agency (EPA) was required, under Section 402 (p) of the Clean Water Act (N40CFR Part 112.26), to establish final regulations governing stormwater discharge permit application requirements. Shortly thereafter, the MS4 owners within the Palm Beach County geographic area were required to collectively apply for a Phase I MS4 permit. Permits are issued for a 5-year period, however, each permit remains in effect until a subsequent permit is issued. For the Palm Beach County group, the following permits have been issued:

The Cycle 5 Phase I permit template is currently being drafted by FDEP and negotiated with the U.S. EPA. Once the template is approved, FDEP will begin drafting the individual Cycle 5 permits for each of the Phase I permittees in Florida.

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