Water Hardness in Lewiston, Maine

The water hardness in Lewiston, ME is 12 ppm (0.7 grains per gallon), which is classified as Soft . Water in Lewiston is supplied by Lewiston-Auburn Water Pollution Control Authority and comes primarily from surface water sources such as rivers, lakes, and reservoirs. No water softening treatment is needed. Lewiston residents enjoy naturally soft water that is gentle on plumbing, appliances, and skin.

Water Hardness 12 ppm 0.7 grains per gallon
Hardness Level Soft No softener needed
Water Source Surface Lewiston-Auburn Water Pollution Control Authority
pH Level 6.9 TDS: 22 ppm

Water Quality Details for Lewiston, ME

Water Hardness (PPM) 12 ppm
Water Hardness (GPG) 0.7 grains/gallon
Classification Soft
Water Source Surface water
pH Level 6.9
Total Dissolved Solids 22 ppm
Water Utility Lewiston-Auburn Water Pollution Control Authority
Softener Needed No
Est. Annual Hard Water Cost Minimal (soft water)
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What 12 PPM Means for Your Home in Lewiston

At 12 ppm, Lewiston's water is classified as soft. This is excellent news for homeowners. Soft water lathers easily with soap and shampoo, leaves no mineral spots on dishes or glassware, and causes no scale buildup in your plumbing or water heater. Your appliances will operate at peak efficiency and enjoy their full expected lifespan. Laundry washed in soft water comes out cleaner and softer, and you will use significantly less soap, shampoo, and detergent than households with hard water. There is no need to invest in any water softening or conditioning equipment.

Water Source and Treatment at Lewiston-Auburn Water Pollution Control Authority

Lewiston's water is supplied by Lewiston-Auburn Water Pollution Control Authority and sourced primarily from surface water bodies including rivers, lakes, and reservoirs. Surface water typically requires more treatment for biological contaminants (bacteria, algae, sediment) but tends to have lower mineral content than groundwater. The hardness level of 12 ppm in Lewiston reflects the mineral content picked up as water flows through local watershed geology before reaching the treatment plant. The water has a pH of 6.9, which is slightly acidic, and total dissolved solids of 22 ppm (low).

Estimated Cost of Hard Water in Lewiston

With soft water at 12 ppm, Lewiston residents enjoy minimal costs associated with water hardness. There is no need for a water softener, and your appliances, plumbing, and fixtures will operate efficiently without mineral-related issues. You can use the manufacturer-recommended amounts of soap, shampoo, and detergent without needing extra.

Other Cities in Maine

Compare Lewiston's water hardness with other cities in Maine. Water hardness can vary significantly within a state depending on local geology and water sources.

City Hardness (PPM) GPG Level Source
Lewiston 12 ppm 0.7 Soft Surface
Waterville 22 ppm 1.3 Soft Surface
Augusta 20 ppm 1.2 Soft Surface
Bangor 18 ppm 1.1 Soft Surface
Biddeford 16 ppm 0.9 Soft Surface
Auburn 14 ppm 0.8 Soft Surface
Portland 10 ppm 0.6 Soft Surface

Test Your Water for Accurate Results

The hardness value shown for Lewiston (12 ppm) is based on the most recent available data from Lewiston-Auburn Water Pollution Control Authority. Your actual water hardness may vary depending on your neighborhood, the age of your plumbing, and seasonal changes in water supply. For the most accurate measurement, we recommend testing your tap water with a home test kit or requesting a current water quality report from Lewiston-Auburn Water Pollution Control Authority. Visit our hardness scale guide to understand what your test results mean, or explore all treatment solutions to find the right option for your home.