Rock Hill Water Quality
South Carolina
According to EPA SDWIS, Rock Hill, South Carolina is served by 9 community water systems covering about 90,985 people. The same extract lists 8 health-based violation records, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Rock Hill, South Carolina is delivered through 9 EPA-regulated community water systems serving an estimated 90,985 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 8 violation records across the 9 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, TTHM. 23 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the South Carolina drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| ROCK HILL CITY OF (SC4610002) | 89,850 | 0 | Clean |
| CATAWBA INDIAN NATION CWS (SC4650063) | 446 | 7 | Health |
| GREEN EARTH PWS (SC4610009) | 280 | 0 | Clean |
| WILLWOOD S/D (4650004) | 122 | 0 | Clean |
| HENSON MHP (4660111) | 65 | 0 | Clean |
| DUNCAN MHP (SC4660093) | 60 | 1 | Health |
| PECAN GROVE COMMONS (SC4660003) | 58 | 0 | Clean |
| LOST COLONY S/D (SC4650019) | 54 | 0 | Clean |
| LAMBERT MHP (SC4660108) | 50 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| DUNCAN MHP (SC4660093) | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| CATAWBA INDIAN NATION CWS (SC4650063) | TTHM | 2016-04-01 |
| CATAWBA INDIAN NATION CWS (SC4650063) | TTHM | 2016-01-01 |
| CATAWBA INDIAN NATION CWS (SC4650063) | TTHM | 2015-10-01 |
| CATAWBA INDIAN NATION CWS (SC4650063) | TTHM | 2015-07-01 |
| CATAWBA INDIAN NATION CWS (SC4650063) | TTHM | 2015-01-01 |
| CATAWBA INDIAN NATION CWS (SC4650063) | TTHM | 2014-10-01 |
| CATAWBA INDIAN NATION CWS (SC4650063) | TTHM | 2014-07-01 |
What are Rock Hill's health-based records for?
Rock Hill's health-based violation records carry 2 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Tthm | 7 | 1 |
| Lead and Copper Rule Revisions | 1 | 1 |
TRI Facilities in Rock Hill
| Facility | Total Releases |
|---|---|
| Pbi Performance Products Inc | 697.1K lbs |
| Cytec Engineered Materials Inc. | 325.5K lbs |
| Atotech USA LLC | 221.3K lbs |
| Gabriel Phenoxies Inc | 105.5K lbs |
| Sem Products Inc | 72.2K lbs |
| Huntsman | 52.5K lbs |
| Possehl Connector Services Sc Inc. | 19.7K lbs |
| Inchem Corp | 9.4K lbs |
| Harrell Industries Inc | 3.1K lbs |
| Koppers Performance Chemicals Inc | 377 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Rock Hill, South Carolina? ▼
How many water violations does Rock Hill have in this EPA extract? ▼
What contaminants were found in Rock Hill water? ▼
How many water systems serve Rock Hill? ▼
Where does Rock Hill get its drinking water? ▼
Are there pollution sources near Rock Hill? ▼
How does Rock Hill compare in South Carolina?
Of the 204 South Carolina places with at least one community water system on file, Rock Hill ranks #8 by number of systems (9).
Either side of it: Moncks Corner (10), Conway (9), Seneca (9), West Columbia (9)
About This Data
Figures here are the current EPA SDWIS extract joined to the 9 community water systems whose service area lists Rock Hill, ranked against the 204 South Carolina places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.