Brockton, MA Water Quality Report

Where Your Drinking Water Comes From

Currently, the Brockton system obtains its drinking water from Silver Lake and the Brockton Reservoir. Silver Lake is the primary supply (92.85% of total) and is located approximately 15 miles southeast of the center of Brockton. Over 50% of tl,e watersheds are either owned by the City of Brockton or in conservation protection. The remainder of the acreage is largely low-density residential development. Water from the lake is treated at the Silver Lake Water Treatment Plant (SL WTP) and is transmitted through two 24-inch diameter mains to the City’s Pumping station. After the pumping station, the water travels through one 36-inch diameter and two 24-inch diameter transmission mains to the Brockton service system. The Brockton Reservoir is a supplemental supply (5.44 % of total) to Silver Lake and is blended into the system at Woodland Avenue . This reservoir was placed in service when the Woodland Avenue WTP became operational in 1994. The Brockton service area and water sources are shown on the map on the front cover. Brockton may also purchase supplemental water from the Aquaria Water Treatment Plant in Dighton, Mass. which treats water from the Taunton River and is connected to the Brockton water system on Pearl St at the West Bridgewater line. Brockton did purchase water from Aquaria in 2018 (1.781% of total).

Source Water Assessment Program

The Brockton water system was evaluated in April 2003 by the Department of Environmental Protection (DEP) and has remained relatively unchanged since then. This evaluation is called a Source Water Assessment Program (SWAP). The SWAP found that the watersheds for the Brockton Water System are primarily a mix of underdeveloped forest (42% for Silver Lake 38% for Brockton Reservoir), residential development (23% and 14%). Agriculture, industry (18%) for Brockton Reservoir) commercial uses and protected open space. The Hubbard Avenue Well which is only used in an emergency has an Interim Wellhead Protection Area (IWPA) that contains predominantly residential (35%), commercial (21% and industrial (8%) uses, with some forest. In the SWAP the Brockton Water System was commended for taking an active role in implementing source protection measures. The SWAP is available for review and questions at the Brockton Water Department Office. Brian Creedon, the Water Systems Manager, is available to answer any questions and is available for educational programs on further inquiries on the Brockton Water System.

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