Winnebago Water Quality Report
4 cities ranked · Average grade: B · Wisconsin
Avg Score
78.8
Cities Ranked
4
Health Violations
3
PFAS Detected
0
78.8
County avg score
4
Cities ranked
50%
A or B grade
0%
D or F grade
3
Health violations
0
PFAS detected
Grade Distribution
How Winnebago cities scored
A
2
50%
Excellent
B
0
0%
Good
C
2
50%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Wisconsin average
▲ 0.8 pts above state average
City Map
Water quality across Winnebago
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Winnebago
Best cities
Worst cities
County context
86.8%
of residents on fluoridated water (CDC, 2020)
573
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Winnebago
Industrial polluters nearby
Facilities reporting the most surface-water releases in Winnebago, 2023.
Total reported releases to surface water: 573 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
ESSITY PROFESSIONAL HYGIENE N.A. LLC MENASHA, WI54952 | Ammonia | 306 |
NEENAH FOUNDRY CO NEENAH OPERATIONS NEENAH, WI54956 | Manganese | 262 |
ALLIANCE INDUSTRIES INC MENASHA, WI54952 | 1,2,4-Trimethylbenzene | 5 |
AMCOR PACKAGING INC OSHKOSH, WI54901 | — | — |
HYDRITE CHEMICAL CO. OSHKOSH, WI54902 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 4 cities in Winnebago
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Oshkosh | A | 94 | 67K | 5 | ||
| 2 | Omro | A- | 88.2 | 4K | 4 | Health Unresolved | |
| 3 | Neenah | C+ | 69.8 | 56K | 19 | Health Unresolved | |
| 4 | Winneconne | C | 63.2 | 3K | 36 | Health Unresolved |