South Carolina has 8 tracked water utilities serving approximately 1.9M residents. The average water hardness is 232 ppm (13.6 GPG), classified as Very Hard — above the national average of 100 ppm. Hardness ranges from 13 ppm in Greenville to 1700 ppm in Bjw&sa (0720003).

In the past 3 years, 5 of 8 cities in South Carolina have recorded water quality violations, totaling 31 violations (21 health-based). All 8 tested cities have lead levels below the EPA action level of 15 ppb.

With very hard water on average, many South Carolina residents may notice mineral buildup on fixtures, dry skin, or stiff-feeling hair. A shower filter for hard water can help reduce chlorine exposure, while a water softener addresses the mineral buildup directly.

Frequently Asked Questions About South Carolina Water

Is tap water safe to drink in South Carolina?

Most tap water in South Carolina meets EPA standards, but 5 cities have recorded violations in the past 3 years (21 health-based). We recommend checking your specific city's report on TapWater.org and considering a home water test.

How hard is the water in South Carolina?

South Carolina's average water hardness is 232 ppm (13.6 GPG), classified as Very Hard. This is above the national average of 100 ppm. Hardness varies significantly by city — use our Water Hardness Calculator to check your specific area.

Which city in South Carolina has the cleanest tap water?

Based on EPA violation data, lead testing, and water quality metrics, Greenville ranks as having the cleanest tap water in South Carolina. It has zero violations in the past 3 years and lead levels well below the EPA action level.

Which city in South Carolina has the most water quality issues?

Conway currently has the most water quality concerns in South Carolina, with 10 violations in the past 3 years. Residents should check their city's detailed water quality report and consider using a certified water filter.

Where does South Carolina get its water from?

The majority of South Carolina's water systems (88%) use surface water as their primary source. Surface water comes from rivers, lakes, and reservoirs. Each city's specific source can vary — check individual city reports for details.