Blue Earth Water Quality Report
8 cities ranked · Average grade: B+ · Minnesota
Avg Score
81.2
Cities Ranked
8
Health Violations
4
PFAS Detected
3
81.2
County avg score
8
Cities ranked
75%
A or B grade
13%
D or F grade
4
Health violations
3
PFAS detected
Grade Distribution
How Blue Earth cities scored
A
5
63%
Excellent
B
1
13%
Good
C
1
13%
Fair
D
0
0%
Poor
F
1
13%
Failing
Comparison
County vs Minnesota average
▼ 6.3 pts below state average
City Map
Water quality across Blue Earth
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Blue Earth
County context
1
Superfund site in Blue Earth
99.3%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Blue Earth
Industrial polluters nearby
Facilities reporting the most surface-water releases in Blue Earth, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
BIG GAIN INC MANKATO, MN56001 | — | — |
CROWN CORK & SEAL CO INC MANKATO, MN56001 | — | — |
HUBBARD FEEDS INC MANKATO, MN56001 | — | — |
CHS MANKATO MANKATO, MN56001 | — | — |
EI MICROCIRCUITS MANKATO, MN56001 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Blue Earth
Superfund sites nearby
Federally tracked hazardous-waste sites within Blue Earth on the EPA National Priorities List.
- LEHILLIER MANKATO
Source: EPA Superfund National Priorities List
Full Rankings
All 8 cities in Blue Earth
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Mapleton | A | 94.5 | 2K | 6 | Unresolved | |
| 2 | Lake Crystal | A | 94.3 | 3K | 5 | Health Unresolved | |
| 3 | Good Thunder | A | 92.3 | 583 | 6 | Health Unresolved | |
| 4 | St. Clair | A | 91 | 846 | 2 | Unresolved | |
| 5 | Madison Lake | A- | 87 | 1K | 7 | Unresolved | |
| 6 | Eagle Lake | B+ | 82.7 | 3K | 1 | Unresolved | |
| 7 | Amboy | C+ | 67.2 | 535 | 20 | Health Unresolved | |
| 8 | Mankato | F | 40.5 | 44K | 83 | Health Unresolved |