The Brewster Well Field consists of two municipal well fields, No. 1 and No. 2, located on the northern bank of the East Branch Croton River, 3/4 of a mile east of the Village of Brewster, Town of Southeast in Putnam, New York. The 18 shallow wells in the field are a source of water for the municipal water system that serves over 2,100 residents in the Village of Brewster and the Town of Southeast, as well as a number of businesses and a railyard. Additional receptors of the ground water from this aquifer include downstream users of the East Branch Croton River, which contributes to the Croton Falls Reservoir approximately 3.5 miles downstream. Also, two reservoirs exist upstream to the east and northeast within 3000 feet of the site, which are part of New York City's Croton watershed reservoir system. Land use to the north and west is predominantly residential, and to the south commercial and light industrial.