Flow Monitoring


EST has experienced pipeline technicians on staff and the state-of-the-art equipment necessary to generate accurate and reliable continuous flow monitoring data. Our extensive inventory of open channel flowmeters collects depth and velocity data and are capable of measuring surcharge flow conditions. EST maintains and calibrates their flowmeters routinely to ensure the devices remain in proper working order. EST can also install flow monitoring units with telemetry to facilitate 24/7 access to monitoring data and alarming during overflow (or other) conditions. After data collection, our final reports include equipment installation records, field calibration records, and detailed flow monitoring data, which are provided in various user-friendly formats.

Over the past five years, EST has installed several hundreds of temporary or permanent flow monitoring systems, in more than 150 municipalities, throughout the Northeast. These continuous flow monitoring systems have been used to measure wastewater flows in conjunction with numerous inflow/infiltration investigations, capacity studies, Combined Sewer Overflow (CSO) monitoring programs, and municipal billing programs.

EST has a strong commitment to safety. Our OSHA-40 certified flow monitoring technicians are confined space entry certified and when working in active thoroughfares, we provide appropriate temporary traffic control measures to enhance the safety of motorists, pedestrians, and our workers. In addition to safety, it is our goal to perform our work in a manner which minimizes the disruption of pedestrian and vehicular traffic.

Contact us today to request a quotation or learn more about EST’s flow monitoring capabilities.

Case Studies

North Hudson Sewerage Authority, Hoboken, NJ – Flow Monitoring Services

The North Hudson Sewerage Authority (NHSA) serves the cities of Hoboken, Union City, Weehawken, and West New York, New Jersey. Infiltration and illicit flows have been persistent problems throughout the system which includes approximately one-hundred (100) miles of sewer line. EST was contracted by the City’s consultant to perform flow monitoring services in order to monitor sewer flows in Hoboken, Jersey City, and West New York.

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City of Chicopee, MA – Combined Sewer Overflow (CSO) Monitoring Program

Chicopee is the second largest city in Western Massachusetts. For decades, the City of Chicopee’s combined sewers have discharged untreated sewage and storm water into the Chicopee and Connecticut rivers. EST was contracted by the City’s engineering consultant to perform flow monitoring services in order measure and record combined sewer overflows within the City’s collection system.

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Narragansett Bay Commission – Flow Monitoring Program

The Narragansett Bay Commission (NBC) is the largest wastewater authority in Rhode Island and is responsible for the operation of approximately eighty-nine (89) miles of combined sewer interceptors, many of which are over one-hundred (100) years old. For over a decade, EST was contracted by the commission to install, calibrate, replace, and maintain continuous flow monitoring and rain gauge equipment throughout the NBC service area.

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New England Office

124 Crescent Road, Needham, MA 02494

Mid-Atlantic Office

127-G Gaither Drive, Mount Laurel, NJ 08054