Jo Daviess Water Quality Report
6 cities ranked · Average grade: B+ · Illinois
Avg Score
84.4
Cities Ranked
6
Health Violations
3
PFAS Detected
0
84.4
County avg score
6
Cities ranked
83%
A or B grade
17%
D or F grade
3
Health violations
0
PFAS detected
Grade Distribution
How Jo Daviess cities scored
A
4
67%
Excellent
B
1
17%
Good
C
0
0%
Fair
D
1
17%
Poor
F
0
0%
Failing
Comparison
County vs Illinois average
▲ 4.7 pts above state average
City Map
Water quality across Jo Daviess
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Jo Daviess
Worst cities
County context
2
Superfund sites in Jo Daviess
99.8%
of residents on fluoridated water (CDC, 2020)
278,169
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Jo Daviess
Industrial polluters nearby
Facilities reporting the most surface-water releases in Jo Daviess, 2023.
Total reported releases to surface water: 278,169 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
EAST DUBUQUE NITROGEN FERTILIZERS LLC EAST DUBUQUE, IL61025 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 278,169 |
TESSENDERLO KERLEY INC. - E. DUBUQUE EAST DUBUQUE, IL61025 | — | — |
BREWSTER - STOCKTON PLANT STOCKTON, IL61085 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Jo Daviess
Superfund sites nearby
Federally tracked hazardous-waste sites within Jo Daviess on the EPA National Priorities List.
- BAUTSCH GRAY MINE
- SAVANNA ARMY DEPOT ACTIVITY
Source: EPA Superfund National Priorities List
Full Rankings