WATER AND WASTEWATER DIVISIONS

Wastewater Collection

Helpful Information:

• Interceptors
• Haverhill's CSO Program
• Combined Sewer Overflow (CSO) Annual Reports
• CSO Location Plan-1
• Mass Department of Environmental Protection
• United States Environmental Protection Agency

The Wastewater Collection System is responsible for the City's sewer lift stations, sewer mains, respond to resident request pertaining to service stoppages, other City infrastructure, and cleaning catch basins. The city of Haverhill owns and operates the wastewater collection system that conveys wastewater to the treatment plant, which is located on the southern shore of the Merrimack River. Portions of this collection system have been in service since the late 1800s and portions convey both stormwater and wastewater.

Service Area:
Haverhill's wastewater collection system currently conveys sanitary flow from approximately 6800 acres and stretches for a total length of over 660,000 feet. The piping network consists of gravity pipe ranging in size from 8 to 72-inches in diameter and force mains ranging in size from 4 to 42-inches. Approximately 35 percent of the service area has combined sewers. However, nearly 50 percent of the existing pipe in Haverhill conveys both sanitary flow and stormwater. The majority of the combined portion of the collection system is located in the older, more densely populated downtown area, along the Merrimack River. Areas further north or south of the Merrimack River tend to be newer and generally include separate sanitary and storm sewers.

There are fifty-one (51) areas (sewersheds) tributary to the Haverhill interceptor system. A breakdown of combined, separate, and undetermined sewer lengths for the entire city is presented below.

• Combined Sewers: 177,160 linear feet
• Separated Sewers: 330,630 linear feet
• Other: 152,890 linear feet