Cerro Gordo Water Quality Report
4 cities ranked · Average grade: A- · Iowa
Avg Score
88.8
Cities Ranked
4
Health Violations
3
PFAS Detected
2
88.8
County avg score
4
Cities ranked
100%
A or B grade
0%
D or F grade
3
Health violations
2
PFAS detected
Grade Distribution
How Cerro Gordo cities scored
A
4
100%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Iowa average
▲ 1.3 pts above state average
City Map
Water quality across Cerro Gordo
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Cerro Gordo
Best cities
Worst cities
County context
1
Superfund site in Cerro Gordo
99.0%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Cerro Gordo
Industrial polluters nearby
Facilities reporting the most surface-water releases in Cerro Gordo, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
CURRIES DIV OF AADG INC. MASON CITY, IA50401 | — | — |
REG MASON CITY LLC MASON CITY, IA50401 | — | — |
GOLDEN GRAIN ENERGY LLC MASON CITY, IA50401 | — | — |
KRAFT HEINZ FOODS CO MASON CITY, IA50401 | — | — |
AG PROCESSING INC MASON CITY, IA50401 | — | — |
+ 4 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Cerro Gordo
Superfund sites nearby
Federally tracked hazardous-waste sites within Cerro Gordo on the EPA National Priorities List.
- MASON CITY COAL GASIFICATION PLANT
Source: EPA Superfund National Priorities List
Full Rankings
All 4 cities in Cerro Gordo
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Rockwell | A | 92.6 | 1K | 12 | Health Unresolved | |
| 2 | Clear Lake | A- | 89.8 | 8K | 22 | Health Unresolved | |
| 3 | Ventura | A- | 87.3 | 716 | 3 | Unresolved | |
| 4 | Mason City | A- | 85.3 | 27K | 143 | Health Unresolved |