Washtenaw Water Quality Report
8 cities ranked · Average grade: B+ · Michigan
Avg Score
81.1
Cities Ranked
8
Health Violations
4
PFAS Detected
3
81.1
County avg score
8
Cities ranked
88%
A or B grade
13%
D or F grade
4
Health violations
3
PFAS detected
Grade Distribution
How Washtenaw cities scored
A
4
50%
Excellent
B
3
38%
Good
C
0
0%
Fair
D
1
13%
Poor
F
0
0%
Failing
Comparison
County vs Michigan average
▲ 0.1 pts above state average
City Map
Water quality across Washtenaw
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Washtenaw
Best cities
Worst cities
County context
1
Superfund site in Washtenaw
97.6%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Washtenaw
Industrial polluters nearby
Facilities reporting the most surface-water releases in Washtenaw, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
U.S. EPA NATIONAL VEHICLE & FUEL EMISSIONS LABORATORY ANN ARBOR, MI48105 | — | — |
CAYMAN CHEMICAL CO INC. ANN ARBOR, MI48108 | — | — |
CADILLAC ASPHALT LLC - ANN ARBOR ANN ARBOR, MI48103 | — | — |
SUPERIOR MATERIALS 38 ANN ARBOR, MI48103 | — | — |
ABRASIVE FINISHING INC CHELSEA, MI48118 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Washtenaw
Superfund sites nearby
Federally tracked hazardous-waste sites within Washtenaw on the EPA National Priorities List.
- GELMAN SCIENCES INC
Source: EPA Superfund National Priorities List
Full Rankings
All 8 cities in Washtenaw
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Dexter | A | 94.1 | 5K | 24 | Unresolved | |
| 2 | Manchester | A- | 89.3 | 2K | 4 | Health Unresolved | |
| 3 | Whittaker | A- | 87.2 | 4K | 4 | Unresolved | |
| 4 | Milan | A- | 86.5 | 7K | 12 | Unresolved | |
| 5 | Saline | B+ | 84 | 9K | 12 | Unresolved | |
| 6 | Ypsilanti | B+ | 80.4 | 61K | 14 | Health Unresolved | |
| 7 | Chelsea | B | 76.1 | 6K | 19 | Health Unresolved | |
| 8 | Ann Arbor | D+ | 51.5 | 279K | 94 | Health Unresolved |