What's in ROCK HILL CITY OF (SC4610002)'s water?
ROCK HILL CITY OF (SC4610002) has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 89,850 people get their water from it, across 38,884 connections.
How this compares nationally
Out of 12,903 systems in this dataset, ROCK HILL CITY OF (SC4610002) ranks 3,618th by violation burden (72th percentile) - 17 violations total, 5 health-baseds.
Against the SC average
Among the 198 SC systems in this dataset, the average is 3.8 health-based violations - ROCK HILL CITY OF (SC4610002)'s 5 is above that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
ROCK HILL CITY OF (SC4610002)'s most recent violation on record is dated 2013-01-10, with the most recent health-based one dated 2013-01-07. Last reported to EPA: 06/29/2026.
The concern categories on record
ROCK HILL CITY OF (SC4610002)'s flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Surface Water Treatment Rule
- Disinfection byproducts - flagged from: TTHM
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What ROCK HILL CITY OF (SC4610002)'s record does not cover
This is what ROCK HILL CITY OF (SC4610002) reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and ROCK HILL CITY OF (SC4610002)'s customers' taps is household plumbing, invisible to a system-level record ranked 3,618th of 12,903 by violation count. The guide to what this data misses covers that gap.