Houston Water Quality Report
3 cities ranked · Average grade: C+ · Texas
Avg Score
68.3
Cities Ranked
3
Health Violations
3
PFAS Detected
1
68.3
County avg score
3
Cities ranked
67%
A or B grade
33%
D or F grade
3
Health violations
1
PFAS detected
Grade Distribution
How Houston cities scored
A
1
33%
Excellent
B
1
33%
Good
C
0
0%
Fair
D
0
0%
Poor
F
1
33%
Failing
Comparison
County vs Texas average
▲ 0.8 pts above state average
City Map
Water quality across Houston
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Houston
Best cities
Worst cities
County context
49.0%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Houston
Industrial polluters nearby
Facilities reporting the most surface-water releases in Houston, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
ALAMO GAS PLANT CROCKETT, TX75835 | — | — |
NUCOR VULCRAFT GROUP - GRAPELAND DIV GRAPELAND, TX75844 | — | — |
DARLING INGREDIENTS INC. - GRAPELAND GRAPELAND, TX75844 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings