D34/100
CITY OF DONNA — Water Quality Report 2026
Serving 16,176 people · Texas
Water Source
Surface Water
County
—
System ID
TX1080002
Violations
17
Contaminant Test Results
5 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.86 mg/L | 1.30 mg/L | Over Limit |
PFOS | 0.007 µg/L | 0.004 µg/L | Over Limit |
strontium | 1600.00 µg/L | — | Above Goal |
chlorate | 310.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
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 DONNA
Is CITY OF DONNA water safe to drink?
CITY OF DONNA water receives a grade of D (34/100), which is considered poor. 2 contaminant(s) exceed EPA legal limits and 17 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF DONNA detected?
70 contaminants were tested in CITY OF DONNA's water. Notable contaminants include Copper (90th percentile), PFOS, Lead (90th percentile), strontium, chlorate. 2 exceed EPA legal limits (MCLs). 5 exceed EPA health goals (MCLGs).
Does CITY OF DONNA have any EPA violations?
Yes, CITY OF DONNA has 17 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR, TT. 6 are health-based violations.
How many people does CITY OF DONNA serve?
CITY OF DONNA serves approximately 16,176 people, Texas.
What type of water does CITY OF DONNA provide?
CITY OF DONNA 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 TX1080002.
How does CITY OF DONNA compare to other utilities in Texas?
CITY OF DONNA scores 34/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Texas state page for a full comparison of water systems.