Loudoun Water Quality Report
6 cities ranked · Average grade: A- · Virginia
Avg Score
88.8
Cities Ranked
6
Health Violations
3
PFAS Detected
4
88.8
County avg score
6
Cities ranked
100%
A or B grade
0%
D or F grade
3
Health violations
4
PFAS detected
Grade Distribution
How Loudoun cities scored
A
6
100%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Virginia average
▲ 9.9 pts above state average
City Map
Water quality across Loudoun
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Loudoun
County context
1
Superfund site in Loudoun
98.0%
of residents on fluoridated water (CDC, 2020)
821
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Loudoun
Industrial polluters nearby
Facilities reporting the most surface-water releases in Loudoun, 2023.
Total reported releases to surface water: 821 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
VIRGINIA CONCRETE DULLES PLANT STERLING, VA20166 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 296 |
SUPERIOR CONCRETE MATERIALS INC. - DULLES CHANTILLY, VA20152 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 288 |
VIRGINIA CONCRETE COCHRAN MILL LEESBURG, VA20175 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 145 |
VIRGINIA CONCRETE CO INC-CHANTILLY CHANTILLY, VA20152 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 92 |
TITAN VIRGINIA READY-MIX LLC-STERLING PLANT STERLING, VA20166 | Lead | 0 |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Loudoun
Superfund sites nearby
Federally tracked hazardous-waste sites within Loudoun on the EPA National Priorities List.
- HIDDEN LANE LANDFILL
Source: EPA Superfund National Priorities List
Full Rankings
All 6 cities in Loudoun
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Lovettsville | A | 94.5 | 3K | 36 | Unresolved | |
| 2 | Hamilton | A- | 88.7 | 2K | 10 | PFAS Unresolved | |
| 3 | Purcellville | A- | 88.3 | 9K | 13 | PFAS Unresolved | |
| 4 | Round Hill | A- | 87.5 | 5K | 16 | Health PFAS Unresolved | |
| 5 | Ashburn | A- | 87 | 335K | 14 | Health Unresolved | |
| 6 | Leesburg | A- | 86.9 | 69K | 37 | Health Unresolved |