Collection System

The City of Old Town's wastewater collection system contains approximately 25 miles of sewers, 500 manholes, and six pump stations. It serves both commercial and residential interests, with approximately 1,900 Old Town resident accounts (including parts of the Stillwater section of Old Town) and approximately 680 Milford users utilizing the system. Portions of this collection system date back to the 1890's and as such are subsequently discharged to the Penobscot River.

In addition to the licensed outfall at the plant, the City of Old Town has three licensed combined sewer overflows(CSOs).  Two discharge to the Penobscot River and one to the Stillwater River. The CSO locations are listed below: 

CSO #002 - Prentiss Street - 24 inch overflow

CSO #003 - Gilman Falls Avenue - 10 inch overflow

CSO #004 - Stillwater Avenue - 8 inch overflow


Two other CSO discharges exist, but have been deactivated. An 8 inch overflow in the Great Works area of Old Town which has been plugged; and an 8 inch overflow directly connected to the College Avenue Pump Station Wetwell (Stillwater System), where its valve has been manually closed.