B63/100
ROCK HILL WSC — Water Quality Report 2026
Serving 1,062 people · Texas
Water Source
Groundwater
County
—
System ID
TX1830014
Violations
9
Contaminant Test Results
EPA Violation History
3
Violations (last 5yr)
2
Unresolved
2
Health-Related
TIER 2Unresolved
Exceeded the Maximum Contaminant Level (running average)
When: July 1, 2025 – September 30, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: May 31, 2025 – August 26, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Unresolved
Exceeded the Maximum Contaminant Level (running average)
When: April 1, 2025 – June 30, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About ROCK HILL WSC
Is ROCK HILL WSC water safe to drink?
ROCK HILL WSC water receives a grade of B (63/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has ROCK HILL WSC detected?
1 contaminants were tested in ROCK HILL WSC's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ROCK HILL WSC have any EPA violations?
Yes, ROCK HILL WSC has 9 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, Other, MR. 7 are health-based violations.
How many people does ROCK HILL WSC serve?
ROCK HILL WSC serves approximately 1,062 people, Texas.
What type of water does ROCK HILL WSC provide?
ROCK HILL WSC sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX1830014.
How does ROCK HILL WSC compare to other utilities in Texas?
ROCK HILL WSC scores 63/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Texas state page for a full comparison of water systems.