Walworth Water Quality Report
12 cities ranked · Average grade: C · Wisconsin
Avg Score
64.8
Cities Ranked
12
Health Violations
12
PFAS Detected
2
64.8
County avg score
12
Cities ranked
42%
A or B grade
17%
D or F grade
12
Health violations
2
PFAS detected
Grade Distribution
How Walworth cities scored
A
1
8%
Excellent
B
4
33%
Good
C
5
42%
Fair
D
0
0%
Poor
F
2
17%
Failing
Comparison
County vs Wisconsin average
▼ 13.2 pts below state average
City Map
Water quality across Walworth
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Walworth
Best cities
Worst cities
County context
1
Superfund site in Walworth
60.0%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Walworth
Industrial polluters nearby
Facilities reporting the most surface-water releases in Walworth, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
CONAGRA FOODS PACKAGED FOODS LLC DARIEN, WI53114 | — | — |
USG STRUCTURAL TECHNOLOGIES LLC DELAVAN, WI53115 | — | — |
PENTAIR FLOW TECHNOLOGIES DELAVAN, WI53115 | — | — |
SPX FLOW US LLC DELAVAN, WI53115 | — | — |
SPX FLOW US LLC DELAVAN, WI53115 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Walworth
Superfund sites nearby
Federally tracked hazardous-waste sites within Walworth on the EPA National Priorities List.
- DELAVAN MUNICIPAL WELL 4
Source: EPA Superfund National Priorities List
Full Rankings
All 12 cities in Walworth
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Darien | A | 91.7 | 2K | 50 | Health Unresolved | |
| 2 | East Troy | B | 76.5 | 5K | 66 | Health Unresolved | |
| 3 | Fontana | B- | 74.2 | 2K | 102 | Health Unresolved | |
| 4 | Genoa City | B- | 73.3 | 3K | 92 | Health Unresolved | |
| 5 | Walworth | B- | 72.4 | 2K | 62 | Health Unresolved | |
| 6 | Whitewater | C+ | 68.6 | 14K | 82 | Health Unresolved | |
| 7 | Pell Lake | C | 61.8 | 4K | 54 | Health Unresolved | |
| 8 | Williams Bay | C | 61.8 | 3K | 45 | Health Lead Unresolved | |
| 9 | Lake Geneva | C | 60 | 13K | 227 | Health PFAS Unresolved | |
| 10 | Sharon | C- | 58.1 | 2K | 94 | Health Unresolved | |
| 11 | Delavan | F | 44.5 | 10K | 388 | Health Unresolved | |
| 12 | Elkhorn | F | 34.5 | 10K | 152 | Health Unresolved |