Public water system · SC4610002
ActiveRock Hill City of (Sc4610002)
At a glance
Rock Hill City of (Sc4610002) (PWSID SC4610002) is an active community water system in York County, South Carolina. It reports serving 89,850 people through 38,884 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
89,850
Service connections
38,884
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Rock Hill City of (Sc4610002) compare with other water systems in York County?
By EPA's size categories, Rock Hill City of (Sc4610002) is a large system (10,001 to 100,000 people). York County has 135 active public water systems, and Rock Hill City of (Sc4610002) is the largest of them by population served. Its population served is about 57 times the county average of 1,573 people per system, and accounts for 42% of the 212,290 people reported by systems filed under the county. Across South Carolina, the 1,392 active systems average 3,511 people each. Nationally, the average active community water system reports serving 6,703 people, so Rock Hill City of (Sc4610002) is about 13 times that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. South Carolina has 567 active community water systems, 41% of the state's 1,392 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 53 South Carolina systems (3.8%) list surface water as their primary source.
Who owns and regulates Rock Hill City of (Sc4610002)?
EPA lists Rock Hill City of (Sc4610002) as owned by a local government. The SC state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 10 of the 135 active systems in York County (7.4%) are also owned by a local government.
Does Rock Hill City of (Sc4610002) have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 2013. The violations listed here began between January 1993 and October 2013. By type: 8 monitoring and reporting, 3 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Nitrate (3 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2013-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2011-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1996-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 1994-01-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1993-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Rock Hill City of (Sc4610002): frequently asked questions
Who runs Rock Hill City of (Sc4610002)?
Rock Hill City of (Sc4610002) (PWSID SC4610002) is a community water system owned by a local government. It is regulated by the SC state drinking water program.
How many people does Rock Hill City of (Sc4610002) serve?
Rock Hill City of (Sc4610002) reports serving 89,850 people through 38,884 service connections in York County, South Carolina.
Where does Rock Hill City of (Sc4610002) get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Rock Hill City of (Sc4610002) have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 2013. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Rock Hill City of (Sc4610002)'s water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the SC state drinking water program.
Where can I find Rock Hill City of (Sc4610002)'s water quality report?
As a community water system, Rock Hill City of (Sc4610002) must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in York County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| York County East Wd (Sc4620002) | York | 30,225 | Community | Purchased surface water |
| Fort Mill Town of (Sc4610003) | York | 25,000 | Community | Purchased surface water |
| York County West Wd (Sc4620003) | York | 18,273 | Community | Purchased surface water |
| York City of (Sc4610001) | York | 11,137 | Community | Purchased surface water |
| Tega Cay City of (Sc4610008) | York | 10,500 | Community | Purchased surface water |
| Clover Town of (Sc4610006) | York | 8,400 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Rock Hill City of (Sc4610002), PWSID SC4610002, South Carolina”, https://aquacensus.com/water-systems/south-carolina/rock-hill-city-of-sc4610002-sc4610002 (data as of October 1, 2026).