The Ulster Water District is supplied by four wells located in Lake Katrine. These wells produce from 400 gallons of water per minute to 1,200 gallons per minute. The water treatment plant treats 1,200 gallons per minute, removes both iron and manganese, and softens the water. The average hardanes for the Ulster Water District is 72 mg/L or 4 grains/gal. Disinfection is achieved by chlorination. The Ulster Water District has three water storage tanks with a total of 7,000,000 gallons of water in storage. The Ulster Water District provides water to 4,500 customers through 1,637 service connections.