Westchester Water Quality Report
37 cities ranked · Average grade: B · New York
Avg Score
77.8
Cities Ranked
37
Health Violations
29
PFAS Detected
9
77.8
County avg score
37
Cities ranked
84%
A or B grade
11%
D or F grade
29
Health violations
9
PFAS detected
Grade Distribution
How Westchester cities scored
A
15
41%
Excellent
B
16
43%
Good
C
2
5%
Fair
D
3
8%
Poor
F
1
3%
Failing
Comparison
County vs New York average
▼ 2.9 pts below state average
City Map
Water quality across Westchester
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Westchester
County context
1
Superfund site in Westchester
15
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Westchester
Industrial polluters nearby
Facilities reporting the most surface-water releases in Westchester, 2023.
Total reported releases to surface water: 15 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
GRAPHITE METALLIZING CORP YONKERS, NY10703 | Copper | 9 |
METALLIZED CARBON CORP OSSINING, NY10562 | Copper | 5 |
CERTAINTEED GYPSUM BUCHANAN LLC BUCHANAN, NY10511 | Lead And Lead Compounds | 1 |
COLORS & EFFECTS USA LLC - PEARL PLANT BUCHANAN, NY10511 | — | — |
RCA ASPHALT LLC MOUNT VERNON, NY10550 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Westchester
Superfund sites nearby
Federally tracked hazardous-waste sites within Westchester on the EPA National Priorities List.
- MAGNA METALS
Source: EPA Superfund National Priorities List
Full Rankings
All 37 cities in Westchester
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Scarsdale | A | 94.2 | 22K | 0 | Zero violations | |
| 2 | Buchanan (V) | A | 93.3 | 2K | 10 | Unresolved | |
| 3 | Port Chester (V) | A | 91 | 57K | 2 | PFAS | |
| 4 | Port Chester (V) | A | 91 | 57K | 2 | PFAS | |
| 5 | Port Chester (V) | A | 91 | 57K | 2 | PFAS | |
| 6 | Irvington (V) | A | 90.9 | 7K | 14 | Health Unresolved | |
| 7 | Croton-On-Hudson (V) | A | 90.1 | 8K | 23 | Health Unresolved | |
| 8 | Elmsford (V) | A- | 88.7 | 5K | 8 | Unresolved | |
| 9 | Larchmont (V) | A- | 88.1 | 6K | 5 | Unresolved | |
| 10 | Mount Vernon (C) | A- | 88 | 74K | 3 | Health Unresolved | |
| 11 | White Plains (C) | A- | 87.8 | 60K | 3 | Health Unresolved | |
| 12 | Mount Kisco (V) | A- | 87.4 | 11K | 11 | Health Unresolved | |
| 13 | North Castle (T) | A- | 87.4 | 5K | 19 | Unresolved | |
| 14 | Briarcliff Manor (V) | A- | 87.2 | 9K | 27 | Health Unresolved | |
| 15 | Peekskill (C) | A- | 86.7 | 24K | 40 | Health Unresolved | |
| 16 | Cortlandt (T) | B+ | 84 | 31K | 43 | Health Unresolved | |
| 17 | Mamaroneck | B+ | 83.9 | 60K | 14 | Health Unresolved | |
| 18 | Tarrytown (V) | B+ | 83.7 | 11K | 27 | Health Unresolved | |
| 19 | Yonkers (C) | B+ | 82.5 | 212K | 5 | Health Unresolved | |
| 20 | Yorktown (T) | B | 78.2 | 36K | 34 | Health PFAS Unresolved | |
| 21 | Greenburgh (T) | B | 76.6 | 46K | 69 | Health Unresolved | |
| 22 | New Castle (T) | B | 75.1 | 17K | 60 | Health PFAS Unresolved | |
| 23 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 24 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 25 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 26 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 27 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 28 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 29 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 30 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 31 | Tuckahoe (V) | B- | 74.5 | 147K | 34 | Health Unresolved | |
| 32 | Ossining (T) | C | 63.2 | 30K | 118 | Health PFAS Unresolved | |
| 33 | Mount Pleasant (T) | C | 62.8 | 43K | 94 | Health Unresolved | |
| 34 | Lewisboro (T) | D | 46 | 5K | 408 | Health Unresolved | |
| 35 | North Salem (T) | D | 46 | 3K | 146 | Health Unresolved | |
| 36 | Bedford (T) | D | 45.4 | 13K | 255 | Health PFAS Unresolved | |
| 37 | Somers (T) | F | 38 | 11K | 684 | Health PFAS Unresolved |