The City of Melbourne has two water treatment facilities: the John A. Buckley Surface Water Treatment Plant and the Joe Mullins Reverse Osmosis (R/O) Treatment Facility.
- The Joe Mullins Reverse Osmosis Water Treatment Plant was put into operation in 1995 with a 6.5 MGD capacity and a 4.0 million gallon ground water storage tank. The R/O WTP's raw water supply is obtained from four Floridan Aquifer wells at approximately 650 to 850 feet underground. Each yields approximately 3.1 million gallons per day.
- Water treated at the John A. Buckley Surface Water Treatment Plant is pumped from Lake Washington, which is the third uppermost of the naturally connected upper St. Johns River lakes. The lake is one of the few surface water supplies of drinking water in Florida.
The City of Melbourne supplies drinking water for its population of about 77,000 and also for customers in surrounding cities and population centers in South Brevard County. This distribution service area is approximately 100 square miles and includes the cities of Melbourne, Melbourne Beach, Indialantic, Indian Harbour Beach, Satellite Beach, Palm Shores, Melbourne Village and a portion of Brevard County. In addition, wholesale water service is provided to West Melbourne, with additional account holders and customers served.