Mason Water Quality Report
3 cities ranked · Average grade: A- · Illinois
Avg Score
88.2
Cities Ranked
3
Health Violations
1
PFAS Detected
0
88.2
County avg score
3
Cities ranked
100%
A or B grade
0%
D or F grade
1
Health violations
0
PFAS detected
Grade Distribution
How Mason cities scored
A
3
100%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Illinois average
▲ 8.5 pts above state average
City Map
Water quality across Mason
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Mason
Best cities
Worst cities
County context
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 Mason
Industrial polluters nearby
Facilities reporting the most surface-water releases in Mason, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
DARLING INGREDIENTS INC MASON CITY, IL62664 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 3 cities in Mason
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Mason City | A | 90.7 | 3K | 17 | Health Unresolved | |
| 2 | Havana | A- | 87.1 | 3K | 8 | Unresolved | |
| 3 | Manito | A- | 86.9 | 2K | 20 | Unresolved |