A87/100
CITY OF SOUTHLAKE — Water Quality Report 2026
Serving 31,576 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX2200075
Violations
3
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.004 µg/L | 0.004 µg/L | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
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 CITY OF SOUTHLAKE
Is CITY OF SOUTHLAKE water safe to drink?
CITY OF SOUTHLAKE water receives a grade of A (87/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CITY OF SOUTHLAKE detected?
69 contaminants were tested in CITY OF SOUTHLAKE's water. Notable contaminants include PFOS, Lead (90th percentile). No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does CITY OF SOUTHLAKE have any EPA violations?
Yes, CITY OF SOUTHLAKE has 3 EPA violation(s) on record, with the most recent in 2016. Violation types include MCL, Other, MR. 1 are health-based violations.
How many people does CITY OF SOUTHLAKE serve?
CITY OF SOUTHLAKE serves approximately 31,576 people, Texas.
What type of water does CITY OF SOUTHLAKE provide?
CITY OF SOUTHLAKE sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is TX2200075.
How does CITY OF SOUTHLAKE compare to other utilities in Texas?
CITY OF SOUTHLAKE scores 87/100 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.