Tier A MS4 Stormwater Permit

The Tier A Municipal Stormwater General Permit authorizes the discharge of stormwater from small municipal separate storm sewers.  The permit was issued in response to USEPA’s phase II rules. The Tier A permit addresses stormwater quality issues related to both new and existing development.

For information regarding the Department’s 2023 Tier A MS4 Stormwater Grant Program please visit https://www.nj.gov/dep/wlm/grants/swgrant.html