Dekalb Water Quality Report
13 cities ranked · Average grade: B+ · Illinois
Avg Score
82.4
Cities Ranked
13
Health Violations
12
PFAS Detected
4
82.4
County avg score
13
Cities ranked
85%
A or B grade
8%
D or F grade
12
Health violations
4
PFAS detected
Grade Distribution
How Dekalb cities scored
A
8
62%
Excellent
B
3
23%
Good
C
1
8%
Fair
D
1
8%
Poor
F
0
0%
Failing
Comparison
County vs Illinois average
▲ 2.7 pts above state average
City Map
Water quality across Dekalb
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Dekalb
Best cities
Worst cities
County context
97.9%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Dekalb
Industrial polluters nearby
Facilities reporting the most surface-water releases in Dekalb, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
NEHRING ELECTRICAL WORKS CO DE KALB, IL60115 | — | — |
CST INDUSTRIES INC. DEKALB, IL60115 | — | — |
FORGE GROUP DEKALB LLC DBA DEKALB FORGE CO DEKALB, IL60115 | — | — |
UNIFIED WIRE & CABLE INC. DEKALB, IL60115 | — | — |
NATURAL POLYMERS LLC CORTLAND, IL60112 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 13 cities in Dekalb
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Genoa | A | 93.3 | 5K | 13 | Health Unresolved | |
| 2 | Hinckley | A | 91.8 | 2K | 69 | Health Unresolved | |
| 3 | Cortland | A | 90.2 | 4K | 35 | Health Unresolved | |
| 4 | Kirkland | A- | 89.2 | 2K | 5 | Health Unresolved | |
| 5 | Somonauk | A- | 88.9 | 2K | 7 | Health Unresolved | |
| 6 | Dekalb | A- | 88.8 | 7K | 38 | Health Unresolved | |
| 7 | Sycamore | A- | 85.8 | 19K | 45 | Health Unresolved | |
| 8 | Waterman | A- | 85.5 | 2K | 67 | Health Unresolved | |
| 9 | Shabbona | B+ | 84.6 | 881 | 22 | Unresolved | |
| 10 | De Kalb | B+ | 80.2 | 45K | 16 | Health Unresolved | |
| 11 | Sandwich | B | 77.1 | 7K | 39 | Health Unresolved | |
| 12 | Kingston | C+ | 69 | 1K | 33 | Health Unresolved | |
| 13 | Malta | D | 47 | 1K | 164 | Health Unresolved |