Springfield MA

The Springfield Water and Sewer Commission (SWSC) provides water to Agawam, East Longmeadow, Longmeadow, Ludlow, Springfield, Southwick, West Springfield, and Westfield. SWSC's West Parish Filtration Plant was first constructed in 1910 and drew from the 2.5 billion gallon Borden Brook Reservoir (fed by the Little River system). Initially, the plant consisted of six slow sand filters. In the late 1920s, the 22.8 billion gallon Cobble Mountain Reservoir was constructed and became the primary raw water source. Additional slow sand filters increased the plant’s capacity; and by 1966, eighteen slow sand filters with a maximum capacity of 70 million gallons per day (MGD) were in use. Further increases in water demand prompted the construction of six rapid rate filters, which today are used in conjunction with ten slow sand filters for a total capacity of 100 MGD.

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