Williamson Water Quality Report
12 cities ranked · Average grade: C+ · Texas
Avg Score
65.7
Cities Ranked
12
Health Violations
12
PFAS Detected
8
65.7
County avg score
12
Cities ranked
50%
A or B grade
25%
D or F grade
12
Health violations
8
PFAS detected
Grade Distribution
How Williamson cities scored
A
3
25%
Excellent
B
3
25%
Good
C
3
25%
Fair
D
0
0%
Poor
F
3
25%
Failing
Comparison
County vs Texas average
▼ 1.8 pts below state average
City Map
Water quality across Williamson
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Williamson
Best cities
County context
36.8%
of residents on fluoridated water (CDC, 2020)
22
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Williamson
Industrial polluters nearby
Facilities reporting the most surface-water releases in Williamson, 2023.
Total reported releases to surface water: 22 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
TECO-WESTINGHOUSE MOTOR CO ROUND ROCK, TX78681 | Copper | 22 |
FLORENCE HMP FLORENCE, TX76527 | — | — |
JARRELL PLANT JARRELL, TX76537 | — | — |
GEMINI - TAYLOR TAYLOR, TX76574 | — | — |
DURCON INC TAYLOR, TX76574 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 12 cities in Williamson
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Thrall | A- | 87.1 | 975 | 14 | Health Unresolved | |
| 2 | Jarrell | A- | 86.8 | 13K | 15 | Health Unresolved | |
| 3 | Taylor | A- | 86.5 | 21K | 13 | Health PFAS Unresolved | |
| 4 | Granger | B+ | 80 | 2K | 26 | Health Unresolved | |
| 5 | Hutto | B | 78 | 60K | 38 | Health PFAS Unresolved | |
| 6 | Cedar Park | B- | 73.8 | 93K | 116 | Health Unresolved | |
| 7 | Florence | C | 62.9 | 1K | 46 | Health Unresolved | |
| 8 | Liberty Hill | C- | 59.4 | 10K | 91 | Health Unresolved | |
| 9 | Bartlett | C- | 55.5 | 3K | 81 | Health Unresolved | |
| 10 | Leander | F | 42.8 | 105K | 708 | Health Unresolved | |
| 11 | Georgetown | F | 39.2 | 192K | 143 | Health PFAS Lead Unresolved | |
| 12 | Round Rock | F | 36 | 162K | 142 | Health Unresolved |