The public water systems listed below add fluoride to their water supply. The purpose is to reduce the incidences of tooth decay in younger users. The target dosage, as recommended by the US Public Health Service, Centers for Disease Control, is 1.1 part per million (ppm) which also can be expressed as 1.1 milligram per liter (mg/L).

Fluoride occurs naturally in bedrock (drilled/artesian) wells in New Hampshire. In southern New Hampshire, the occurrence of elevated fluoride is irregular. In the northern portions, fluoride is much more common, particularly in wells in the Mt. Washington Valley. Public water systems with elevated naturally occurring fluoride are listed fact sheet WD-WSEB-5-2 entitled "Small Public Water Systems in New Hampshire with Naturally Occurring Fluoride."
 

FOR MORE INFORMATION
For more information please call the DES's Water Supply Engineering Bureau at 271-3139. We would appreciate your suggestions concerning this fact sheet. For a complete list of water supply fact sheets, please request WD-WSEB-15-2. Drinking water fact sheets are available through the DES web site at: www.des.state.nh.us/ws.htm then select: wseb fact sheets. Please check the DES internet site annually for update of this document. 7/02