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Texas Water Quality Rankings & Reports 2026 — 11 cities graded A–F
All 11 cities ranked by water quality score
How Texas's 11 cities are distributed by water quality grade
9 out of 11 cities meet or exceed a B grade for water quality
Sorted by water quality score from best to worst. Click any city for a detailed water quality report.
| Rank | City | Score | Grade |
|---|---|---|---|
| 1 | El Paso | 97/100 | A+ |
| 2 | Austin | 95/100 | A+ |
| 3 | Dallas | 95/100 | A+ |
| #4 | Plano | 95/100 | A+ |
| #5 | San Antonio | 95/100 | A+ |
| #6 | Arlington | 93/100 | A |
| #7 | Fort Worth | 93/100 | A |
| #8 | Houston | 89/100 | A- |
| #9 | Corpus Christi | 80/100 | B+ |
| #10 | Lubbock | 67/100 | C+ |
| #11 | Irving | 65/100 | C+ |
The best water quality in Texas is found in El Paso with a score of 97/100 and a grade of A+. This puts El Paso among the top-performing cities in the country for drinking water safety.
The most concerning water quality is in Irving scoring 65/100 with a grade of C+. Residents may want to consider home water testing and filtration options.
The statewide average score is 88/100, which is 16 points above the national average of 72/100. A strong majority (82%) of Texas cities exceed the national average, indicating generally good water infrastructure across the state.
Texas tap water averages 88/100. Even with solid scores, a certified filter removes trace contaminants and improves taste — especially useful for households with young children or anyone sensitive to chlorine or lead.
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El Paso has the best water quality in Texas with a score of 97/100 and a grade of A+. This score is based on contaminant levels, EPA compliance history, and infrastructure quality. El Paso ranks among the top cities nationally for water quality.
Water quality varies across Texas. The state average score is 88/100. 82% of Texas cities have good water quality (grade B or better). All cities in Texas maintain at least a C-grade, though individual results can vary by neighborhood and home plumbing. Always check your specific city's water quality report for the most accurate local information.
Of the 11 cities tracked in Texas, 0 cities have a D or F grade, indicating significant water quality concerns. An additional 2 cities fall in the C range, suggesting moderate issues. 9 out of 11 cities (82%) score above the national average of 72/100. Residents concerned about their water quality can check their city's detailed report for specific contaminant information.
This page serves as a comprehensive water quality report for all 11 Texas cities, compiled from EPA contaminant data and compliance records. Each city link provides an individual water quality report with safety grade, top contaminants, and infrastructure assessment. For official Consumer Confidence Reports (CCR), contact your local water utility — federal law requires all community water systems to deliver an annual CCR to customers. The Texas state environmental agency and the EPA's Safe Drinking Water Information System (SDWIS) also publish official water quality data.
State water quality summary and key statistics
Top 20 cities with the cleanest water
Top-ranked cities nationwide
Cities with the most concerning water
Compare water quality across all 50 states
Side-by-side water quality comparison