Water Quality in South Carolina: Complete Guide
Everything homeowners need to know about South Carolina tap water - hardness, contaminants, treatment options, and costs.
Quick summary: South Carolina has an average water hardness of 38 PPM across 16 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 South Carolina
South Carolina's water hardness ranges from 15 PPM in Taylors to 80 PPM in Charleston, with a statewide average of 38 PPM. This makes South Carolina one of the softer-water states. The national average is approximately 120 PPM.
Most South Carolina cities use surface water (rivers, lakes, reservoirs), which generally has lower mineral content than groundwater.
Contaminants of Concern in South Carolina
PFAS: The average PFAS level across South Carolina cities is 15.6 ppt. Columbia has the highest detected PFAS at 36.75 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. South Carolina homes built before 1986 are at higher risk due to lead solder. 1 cities show lead levels above 5 ppb.
Do You Need a Water Softener in South Carolina?
For most South Carolina 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 South Carolina
With an average hardness of 38 PPM, most South Carolina households do not face significant hard water impact. However, homes with hardness above 120 PPM should evaluate treatment options.