Is South Carolina Tap Water Safe to Drink?

Water quality data for 16 cities across South Carolina. Find your city below.

Water quality in South Carolina varies significantly from city to city. Across 16 cities we track, hardness ranges from 15 PPM in Greer to 80 PPM in Charleston, with a statewide average of 38 PPM. Most cities in South Carolina have relatively soft water, so a softener is generally unnecessary.

9 South Carolina cities have forever chemicals (PFAS) above the EPA's 2024 limit of 4 parts per trillion: Charleston (22.27 ppt), Myrtle Beach (27.52 ppt), Columbia (36.75 ppt), North Charleston (22.4 ppt), Hilton Head (16.38 ppt), and 4 more. A reverse osmosis system or NSF P473-certified filter can reduce PFAS to safe levels.

16
Cities
38
Avg Hardness (PPM)
80
Hardest City (PPM)

City Comparisons

South Carolina Cities by Water Hardness

CityHardness (PPM)LevelPFAS (ppt)Source
Charleston 80 Moderately Hard 22.27 Edisto + Bushy Park
Bluffton 55 Slightly Hard 0 Floridan Aquifer
Myrtle Beach 50 Slightly Hard 27.52 Waccamaw River & Bull Creek
Columbia 48 Slightly Hard 36.75 Lake Murray, Broad River
North Charleston 47 Slightly Hard 22.4 Bushy Park Reservoir
Rock Hill 44 Slightly Hard 8.58 Catawba River
Hilton Head 42 Slightly Hard 16.38 Floridan Aquifer
Summerville 40 Slightly Hard 33.05 Edisto River & local wells
Goose Creek 38 Slightly Hard 24.6 Edisto River
Mount Pleasant 35 Slightly Hard 31.11 Cooper River via Charleston CPW
Greenville 30 Slightly Hard 0 Table Rock Reservoir
Charleston Downtown 28 Slightly Hard 22.27 Edisto River
Spartanburg 25 Slightly Hard 0 South Pacolet River
Taylors 15 Soft 0 North Saluda Reservoir
Clemson 15 Soft 3.9 Hartwell Lake
Greer 15 Soft 0 Lake Robinson + North Saluda

Frequently Asked Questions About South Carolina Water

Is South Carolina tap water safe to drink?
South Carolina tap water meets EPA legal standards in most cities. 9 cities have PFAS levels above the EPA health advisory of 4 ppt. Water hardness is relatively low across the state. Check your specific city above for detailed data.
Do I need a water softener in South Carolina?
Most South Carolina homes do not need a water softener. The state average of 38 PPM is relatively soft.
Which South Carolina city has the hardest water?
Charleston has the hardest water in South Carolina at 80 PPM (4.7 GPG). Bluffton is second at 55 PPM. See the full ranking.
What contaminants are in South Carolina water?
The most common concerns across South Carolina are chlorine and disinfection byproducts, and PFAS (forever chemicals) detected in 9 cities. Each city has different levels - check your city above for specific contaminant data.
How much does a water softener cost in South Carolina?
A whole-house water softener for a typical South Carolina home costs $800-$2,500 installed, depending on capacity and brand. At 38 PPM average hardness, most homes need a 32,000-48,000 grain system. Full cost breakdown.

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Common Issues

Hard Water PFAS Lead Chlorine