City Water Quality Rankings in South Carolina
158 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#97
Lexington
County, SC
93 A
#98 Conway
County, SC
92 A
#99 Elloree
County, SC
92 A
#100 Holly Hill
County, SC
92 A
#101 Lamar
County, SC
92 A
#102 Neeses
County, SC
92 A
#103 St Matthews
County, SC
92 A
#104 Swansea
County, SC
92 A
#105 Westminster
County, SC
92 A
#106 Whitmire
County, SC
92 A
#107 Belton
County, SC
91 A
#108 Manning
County, SC
91 A
#109 Mcbee
County, SC
91 A
#110 Batesburg-Leesville
County, SC
90 A
#111 Bath
County, SC
90 A
#112 Darlington
County, SC
90 A
#113 Johns Island
County, SC
90 A
#114 Mount Pleasant
County, SC
90 A
#115 Newberry
County, SC
90 A
#116 Powdersville
County, SC
90 A
#117 Fort Mill
County, SC
89 B
#118 Ridge Spring
County, SC
89 B
#119 Chester
County, SC
88 B
#120 Johnsonville
County, SC
88 B
Frequently Asked Questions
How are city water quality rankings calculated in South Carolina?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two cities in South Carolina?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.