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Limestone Water & Sewer District (LWSD)

Limestone Water & Sewer District

Serving the Town of Limestone with clean water since 1912

Water Quality

bestDrinkingWaterWe ensure that your water is safe through regular monitoring and testing of water quality. These test are conducted by the Health & Environmental Testing Laboratory; a public health laboratory located in Augusta, Maine.

Responsibility for maintaining water quality resides with our staff of certified water operators, licensed by the State of Maine Department of Human Services.

The Safe Drinking Water Act mandates the state, along with the Environmental Protection Agency (EPA), to establish and enforce minimum drinking water standards. These standards set limits on certain biological, radioactive, organic and inorganic substances sometimes found in drinking water. The limits set on these standards are know as MCL's (Maximum Contaminant Levels).

Read Bangor Daily Article

The Limestone Water System

Our Wells
Wells Circumference Depth
1 18" 44'
2 10" 435'


Chlorine at 12.5%
Fluoride at 23%
Sea-Quest granular mixed with water at 14-lbs. to 50 gallons of water.

Nitrate is removed by ion exchange. This is a seven step process of filtering and backwashing.
Salt is used in the backwashing process to remove any nitrates built up in filters. The nitrate system runs best at 40 - 75 psi in the tanks.

The treatment plant is capable of running at 450 gpm. The stand tank holds 225,600 gallons. At 24' the tank is 27' high.
The clearwell holds 44,860 gallons. At 7.4' the tank is 31'-9" wide by 28'-2" long and is 10' deep.

The Limestone water system has seven miles of water mains.