F6/100
CITY OF MERCEDES — Water Quality Report 2026
Serving 16,258 people · Texas
Water Source
Surface Water
County
—
System ID
TX1080007
Violations
52
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
strontium | 2100.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
3
Unresolved
1
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: May 1, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Treatment technique violation
When: October 17, 2024Rule: Ground Water RuleEnforcement: 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 CITY OF MERCEDES
Is CITY OF MERCEDES water safe to drink?
CITY OF MERCEDES water receives a grade of F (6/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 52 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF MERCEDES detected?
69 contaminants were tested in CITY OF MERCEDES's water. Notable contaminants include Lead (90th percentile), strontium. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does CITY OF MERCEDES have any EPA violations?
Yes, CITY OF MERCEDES has 52 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, TT. 9 are health-based violations.
How many people does CITY OF MERCEDES serve?
CITY OF MERCEDES serves approximately 16,258 people, Texas.
What type of water does CITY OF MERCEDES provide?
CITY OF MERCEDES sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is TX1080007.
How does CITY OF MERCEDES compare to other utilities in Texas?
CITY OF MERCEDES scores 6/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Texas state page for a full comparison of water systems.