Falmouth’s Tap Water

SOURCES: Falmouth gets its water from several sources:

  1. Long Pond (surface water). The biggest source for Falmouth’s drinking water is Long Pond, a surface water reservoir which has been supplying the Town water since 1898. Long Pond supplied nearly 43% of the town’s water in 2014 (711 million gallons), including 60% of the water during peak summer months. Long Pond water is currently unfiltered and thus treated heavily with disinfectant, which has led to health concerns. As a result, the Town voted to allocate $46 million to construct a new water filtration plant on the east shore of the Pond in 2014. Construction began in 2015 and the plant is expected to be complete and in operation in 2017.
  2.  Crooked Pond Water Filtration Plant (ground water) The next biggest sources is the Crooked Pond Water Filtration Plant, which receives and treats water from both the Crooked Pond Well and the Coonamessett Wells. Water treatment at the CPWF Plant consists of air-stripping, activated carbon adsorption and manganese-greensand filtration followed by disinfection and pH adjustment. The water from this plant is the highest quality water of all Falmouth’s sources. The CPWFP provided  more than 20% of our water in 2014 (337 million gallons).
  3. Fresh Pond Well (ground water). The Fresh Pond Well provided around 16% of Falmouth’s water in 2014 (266 million gallons).
  4. Upper Cape Regional Water Co-op (UCRWC)(ground water). In 2014, the UCRWC provided about 12% of the town’s water supply (196 million gallons)
  5. Mares Pond Well (ground water). Mares Pond Well provided about 6% of our water in 2014 (97 million gallons).

WATER TREATMENT: Water is treated with Sodium Hydroxide to stabilize the pH and is disinfected with either Chlorine or Sodium Hypochlorite.

WATER QUALITY: Falmouth’s household water is overseen by the Department of Public Works– Water Division.  Stephen Rafferty is the Water Superintendent (srafferty at falmouthmass.us or 508-457-2543).

The Town samples water from each of the main sources of drinking water on an on-going basis to determine water quality. The Massachusetts Department of Environmental Conservation also oversees monitoring and reviews monthly operating records.


Cape Cod, like most places, has a limited supply of freshwater. The Town of Falmouth is allocated a certain amount of water each year based on the number of inhabitants and the expectation that people will use water consciously and conservatively. The Town has put certain voluntary conservation measures in place to encourage responsible water use, including:

  • Watering lawns on either odd / even days only (based on house address) between the hours of 7:00 p.m. and 7:00 a.m.
  • No washing of sidewalks, patios and driveways  (excluding businesses for safety / health reasons).
  • Pistol-grip nozzles are required for all hoses used for washing cars and all hoses at dockside facilities.
  • Restaurants may only serve water when requested by patrons.


In 2015, the Town began construction of a new drinking water filtration plant, which is expected to be completed and functional by  of 2017.