Town of Needham, MA Flow Monitoring and I/I Related Inspection Services

The Town of Needham is suburb located approximately ten (10) miles west of Boston. The Town’s collection system consists of approximately one hundred and thirty (130) miles of gravity sewer which convey approximately four (4) million gallons of wastewater to the MWRA interceptor system per day. During an average year approximately sixty-six percent (66%) of Needham’s flows to the MWRA are inflow/infiltration and during certain times of year that percentage peaks at approximately eighty-two percent (82%) of the total flow.

EST was contracted by the Town’s engineering consultant to identify potential Inflow and Infiltration sources within the Town’s collection system. Services included: continuous flow monitoring at multiple locations throughout the Town and CCTV inspections of more than one-hundred and fifty thousand (150,000) linear feet of sewer line. Permanent flow monitoring equipment installed by EST included telemetry and data hosting allowing the town’s engineer to access flow monitoring data on a 24/7 basis on the project’s internet portal. All work was performed in accordance with EST’s corporate health & safety requirements and applicable DOT and OSHA procedures.

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Stratford, CT maintains a water pollution control facility that can process up to eleven (11) million gallons per day. As part of an Inflow/Infiltration (I/I) study, EST installed and maintained forty-four (44) open channel flowmeters, and two (2) rain gauges during an eight (8) week study period.

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City of Melrose, MA – Flow Monitoring Services (2016)

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