Williamson Water Quality Report
1 cities ranked · Average grade: B · Maryland
Avg Score
79.4
Cities Ranked
1
Health Violations
0
PFAS Detected
0
79.4
County avg score
1
Cities ranked
100%
A or B grade
0%
D or F grade
0
Health violations
0
PFAS detected
Grade Distribution
How Williamson cities scored
A
0
0%
Excellent
B
1
100%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Maryland average
▲ 5.0 pts above state average
City Map
Water quality across Williamson
Each dot is a city, colored by grade. Click any city to view its full report.
County context
1
Superfund site in Williamson
87.2%
of residents on fluoridated water (CDC, 2020)
3,534
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Williamson
Industrial polluters nearby
Facilities reporting the most surface-water releases in Williamson, 2023.
Total reported releases to surface water: 3,534 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
U.S. NAVY NAVAL SUPPORT FACILITY INDIAN HEAD INDIAN HEAD, MD20640 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 3,534 |
SMO BRYANS ROAD PLANT BRYANS ROAD, MD20616 | — | — |
SMO LA PLATA PLANT LA PLATA, MD20646 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Williamson
Superfund sites nearby
Federally tracked hazardous-waste sites within Williamson on the EPA National Priorities List.
- INDIAN HEAD NAVAL SURFACE WARFARE CENTER
Source: EPA Superfund National Priorities List
Full Rankings
All 1 cities in Williamson
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Crofton | B | 79.4 | 830 | 88 | Unresolved |