Williamson Water Quality Report
11 cities ranked · Average grade: B · Illinois
Avg Score
76
Cities Ranked
11
Health Violations
7
PFAS Detected
5
76
County avg score
11
Cities ranked
73%
A or B grade
9%
D or F grade
7
Health violations
5
PFAS detected
Grade Distribution
How Williamson cities scored
A
3
27%
Excellent
B
5
45%
Good
C
2
18%
Fair
D
1
9%
Poor
F
0
0%
Failing
Comparison
County vs Illinois average
▼ 3.7 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
Worst cities
County context
1
Superfund site in Williamson
100.0%
of residents on fluoridated water (CDC, 2020)
0
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.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
DIAGRAPH MARKING & CODING MARION, IL62959 | — | — |
GENERAL DYNAMICS ORDNANCE & TACTICAL SYSTEMS INC I AREA MARION, IL62959 | — | — |
GENERAL DYNAMICS ORDNANCE & TACTICAL SYSTEMS INC BFP AREA MARION, IL62959 | — | — |
AISIN MANUFACTURING ILLINOIS LLC MARION, IL62959 | — | — |
SOUTHERN ILLINOIS POWER COOPERATIVE MARION, IL62959 | — | — |
+ 3 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Williamson
Superfund sites nearby
Federally tracked hazardous-waste sites within Williamson on the EPA National Priorities List.
- SANGAMO ELECTRIC DUMP CRAB ORCHARD NATIONAL WILDLIFE REFUGE USDOI
Source: EPA Superfund National Priorities List
Full Rankings
All 11 cities in Williamson
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Cambria | A | 92.2 | 2K | 5 | Unresolved | |
| 2 | Energy | A- | 88.7 | 984 | 2 | Unresolved | |
| 3 | Crainville | A- | 85.2 | 2K | 18 | Health Unresolved | |
| 4 | Pittsburg | B+ | 84 | 7K | 22 | Unresolved | |
| 5 | Creal Springs | B | 79.8 | 683 | 8 | Health Unresolved | |
| 6 | Hurst | B | 78.2 | 782 | 23 | Health Unresolved | |
| 7 | Johnston City | B | 77.8 | 4K | 9 | Health Unresolved | |
| 8 | Colp | B- | 73.7 | 506 | 14 | Health Unresolved | |
| 9 | Carterville | C+ | 66 | 8K | 27 | Health Unresolved | |
| 10 | Herrin | C+ | 65.2 | 13K | 6 | Lead Unresolved | |
| 11 | Marion | D | 45 | 36K | 270 | Health Unresolved |