Water Quality in Connecticut: Complete Guide
Everything homeowners need to know about Connecticut tap water - hardness, contaminants, treatment options, and costs.
Quick summary: Connecticut has an average water hardness of 31 PPM across 13 cities. 0% of cities have hard water above 120 PPM. PFAS contamination is detected above EPA limits in at least one city. Most households do not need water softening equipment.
Water Hardness Across Connecticut
Connecticut's water hardness ranges from 18 PPM in West Hartford to 55 PPM in Waterbury, with a statewide average of 31 PPM. This makes Connecticut one of the softer-water states. The national average is approximately 120 PPM.
Most Connecticut cities use surface water (rivers, lakes, reservoirs), which generally has lower mineral content than groundwater.
Contaminants of Concern in Connecticut
PFAS: The average PFAS level across Connecticut cities is 22.6 ppt. Bridgeport has the highest detected PFAS at 39.75 ppt, above the EPA maximum contaminant level of 4 ppt. Residents should consider a reverse osmosis or NSF P473-certified filter for drinking water.
Lead: Lead contamination comes from plumbing infrastructure, not the water source. Connecticut homes built before 1986 are at higher risk due to lead solder. 2 cities show lead levels above 5 ppb.
Do You Need a Water Softener in Connecticut?
For most Connecticut residents, no. Only 0% of cities have hard water above 120 PPM. However, individual situations vary - check your city page for specific data.
Impact of Hard Water in Connecticut
With an average hardness of 31 PPM, most Connecticut households do not face significant hard water impact. However, homes with hardness above 120 PPM should evaluate treatment options.