Local water snapshot
City of Rock Hill
From its 2025 water quality report · read the full report
- Water source
- Surface water intakes on Lake Wylie and the Catawba River (Catawba River Basin); treated at the Cherry Road plant
- City of Rock Hill serves about 89,850 people.
- City of Rock Hill Utilities (hosted by York County, SC), 2025
- Hardness
- 35 mg/L
- About 2 grains per gallon: soft by USGS classes. Average (2025).
- City of Rock Hill Utilities (hosted by York County, SC), 2025
- Disinfectant
- Chlorine dioxide and chlorine
- City of Rock Hill Utilities (hosted by York County, SC), 2025
- TTHM (disinfection byproducts)
- 52 ppb
- Highest running annual average (2025); federal limit 80 ppb.
- City of Rock Hill Utilities (hosted by York County, SC), 2025
- HAA5 (disinfection byproducts)
- 37 ppb
- Highest running annual average (2025); federal limit 60 ppb.
- City of Rock Hill Utilities (hosted by York County, SC), 2025
- Lead (at sampled homes' taps)
- 2 ppb
- 90th percentile of homes sampled (2023); 0 sampled homes above the action level. The federal action level is 15 ppb.
- City of Rock Hill Utilities (hosted by York County, SC), 2025
- Violations
- None
- The 2025 report states there were no violations.
- City of Rock Hill Utilities (hosted by York County, SC), 2025