Wethersfield contributes wastewater flows to both the Rocky Hill and Hartford Water Pollution Control Facilities. When it rains, the amount stormwater entering the sewer systems increases from 1.7 million gallons per day during dry weather to 9.1 million gallons per day, a significant contribution to the diminished treatment capacity of the two facilities. This can cause raw sewage overflows into basements and into Wethersfield Cove and the Connecticut River and its tributaries. The excess stormwater is introduced into the sewer system through old sewer pipes, some of which were installed as early as 1914, and drainage connections consisting of down spouts, basement sum pumps and yard drains.
- Most of Wethersfield’s 98 miles of sewer mains are more than 50 years old, and therefore more susceptible to allowing excess water into the system.
- Currently, more than 20 miles of sewer pipes have been lined to prevent this groundwater from infiltrating through broken or cracked sections.
- Approximately 190 sanitary sewer manholes have been rehabilitated or replaced.
- Stormwater is also being reduced within the sewer system by eliminating existing homeowner drainage connections.
- Several improvements are planned in Phase II of the Clean Water Project for the sewer system in Wethersfield, including increasing capacity in the Fairlane Drive and Carriage Hill area, the Goff Brook Project and the rehabilitation of an additional 32 miles of sewer pipe.