Delaware Water Quality Report
4 cities ranked · Average grade: A- · Iowa
Avg Score
89.3
Cities Ranked
4
Health Violations
2
PFAS Detected
0
89.3
County avg score
4
Cities ranked
100%
A or B grade
0%
D or F grade
2
Health violations
0
PFAS detected
Grade Distribution
How Delaware cities scored
A
3
75%
Excellent
B
1
25%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Iowa average
▲ 1.8 pts above state average
City Map
Water quality across Delaware
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Delaware
Best cities
Worst cities
County context
76.4%
of residents on fluoridated water (CDC, 2020)
31
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Delaware
Industrial polluters nearby
Facilities reporting the most surface-water releases in Delaware, 2023.
Total reported releases to surface water: 31 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
XL SPECIALIZED TRAILERS INC MANCHESTER, IA52057 | Manganese | 22 |
STRYTEN MANCHESTER LLC MANCHESTER, IA52057 | Lead And Lead Compounds | 8 |
HENDERSON PRODUCTS INC MANCHESTER, IA52057 | Manganese | 1 |
BIG RIVER UNITED ENERGY LLC DYERSVILLE, IA52040 | — | — |
HUBBARD FEEDS INC DYERSVILLE, IA52040 | — | — |
+ 2 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 4 cities in Delaware
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Hopkinton | A | 94.3 | 622 | 9 | Unresolved | |
| 2 | Manchester | A | 90.5 | 5K | 3 | Health Unresolved | |
| 3 | Earlville | A- | 89.6 | 724 | 31 | Health Unresolved | |
| 4 | Delhi | B+ | 83 | 509 | 110 | Unresolved |