A100/100
OAK HILLS WSC — Water Quality Report 2026
Serving 6,225 people · Texas
Water Source
Groundwater
County
—
System ID
TX2470009
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 OAK HILLS WSC
Is OAK HILLS WSC water safe to drink?
OAK HILLS WSC water receives a grade of A (100/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has OAK HILLS WSC detected?
31 contaminants were tested in OAK HILLS WSC's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does OAK HILLS WSC have any EPA violations?
No, OAK HILLS WSC has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does OAK HILLS WSC serve?
OAK HILLS WSC serves approximately 6,225 people, Texas.
What type of water does OAK HILLS WSC provide?
OAK HILLS WSC sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX2470009.
How does OAK HILLS WSC compare to other utilities in Texas?
OAK HILLS WSC scores 100/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Texas state page for a full comparison of water systems.