Public Sewer Systems
There are 4 public sewer systems serving Whitemarsh Township: the Whitemarsh Township Authority, the Conshohocken Borough Sewage Treatment Plant, the Ambler Municipal Sewage Treatment Plant and the City of Philadelphia Southwest WPCC.

Service Areas
The Whitemarsh Township Authority service area encompasses the area between Flourtown and Barren Hill Roads in the southern part of the township. A portion of the central part of the township is also served via pump station.
Sewer Water Treatment Plant
The Conshohocken Borough Sewage Treatment Plant serves only a very small area of the southwest corner of the township.

The Ambler Municipal Sewage Treatment Plan serves the northern area of the township and the area of the township bordered by Skippack Pike and Bethlehem Pike, known as the Arlingham Section, is served by the City of Philadelphia Southwest WPCC.

For information on Whitemarsh Township Authority sewer rentals, see their website.