Water Quality in New Jersey: Complete Guide
Everything homeowners need to know about New Jersey tap water - hardness, contaminants, treatment options, and costs.
Quick summary: New Jersey has an average water hardness of 45 PPM across 22 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 New Jersey
New Jersey's water hardness ranges from 25 PPM in Atlantic City to 70 PPM in Princeton, with a statewide average of 45 PPM. This makes New Jersey one of the softer-water states. The national average is approximately 120 PPM.
Most New Jersey cities use surface water (rivers, lakes, reservoirs), which generally has lower mineral content than groundwater.
Contaminants of Concern in New Jersey
PFAS: The average PFAS level across New Jersey cities is 23.4 ppt. Lakewood has the highest detected PFAS at 74.04 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. New Jersey homes built before 1986 are at higher risk due to lead solder. 3 cities show lead levels above 5 ppb.
Do You Need a Water Softener in New Jersey?
For most New Jersey 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 New Jersey
With an average hardness of 45 PPM, most New Jersey households do not face significant hard water impact. However, homes with hardness above 120 PPM should evaluate treatment options.