F0/100
CITY OF WINONA — Water Quality Report 2026
Serving 1,194 people · Texas
Water Source
Groundwater
County
—
System ID
TX2120026
Violations
147
Contaminant Test Results
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: May 1, 2025 – July 15, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – November 22, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024 – November 22, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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 WINONA
Is CITY OF WINONA water safe to drink?
CITY OF WINONA water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 147 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF WINONA detected?
1 contaminants were tested in CITY OF WINONA's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF WINONA have any EPA violations?
Yes, CITY OF WINONA has 147 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, TT, RPT. 1 are health-based violations.
How many people does CITY OF WINONA serve?
CITY OF WINONA serves approximately 1,194 people, Texas.
What type of water does CITY OF WINONA provide?
CITY OF WINONA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX2120026.
How does CITY OF WINONA compare to other utilities in Texas?
CITY OF WINONA scores 0/100 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.