Massachusetts Water Resources Authority
Sewer Flow Monitoring and Data Collection
The Massachusetts Water Resources Authority (MWRA) is the largest wastewater authority in New England and treats sewerage from forty-three (43) cities and towns in the Greater Boston area. EST was awarded contracts by the MWRA to install, program, calibrate, and maintain temporary open channel flowmeters at locations throughout the authority’s collection system. EST has performed over one-hundred and seventy-five (175) flowmeter installations associated with these contracts. These temporary flowmeters were used to measure and record flows, in order to verify and document the accuracy of permanent MWRA flowmeters used to measure sewer flows from municipalities throughout the MWRA service area. EST’s services also included site investigations, reviews of record drawings of monitoring sites, manhole mapping, instantaneous flow measurements, and detailed report generation. All work has been performed in accordance with applicable OSHA regulations and Department of Transportation (DOT) traffic safety standards.
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.
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.
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.