MAMSA is a statewide association of local governments that own or operate regulated municipal separate storm sewer systems (MS4s), and leading consultants that efficiently support these public entities with their technical expertise.
Havre de Grace
Queen Anne’s County
St. Mary’s County
In addition, leading stormwater consulting and engineering firms actively participate as affiliate members to keep abreast of changing policies and to support MAMSA Agency Members with their exceptional technical expertise.