Ontario Water Quality Report
19 cities ranked · Average grade: B+ · New York
Avg Score
83.9
Cities Ranked
19
Health Violations
10
PFAS Detected
2
83.9
County avg score
19
Cities ranked
95%
A or B grade
0%
D or F grade
10
Health violations
2
PFAS detected
Grade Distribution
How Ontario cities scored
A
11
58%
Excellent
B
7
37%
Good
C
1
5%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs New York average
▲ 3.2 pts above state average
City Map
Water quality across Ontario
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Ontario
County context
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Ontario
Industrial polluters nearby
Facilities reporting the most surface-water releases in Ontario, 2023.
Total reported releases to surface water: 0 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
OLDCASTLE APG NEW ENGLAND VICTOR, NY14564 | Lead compounds | 0 |
PACTIV LLC CANANDAIGUA, NY14424 | — | — |
NORTHRUP FARMINGTON FARMINGTON, NY14425 | — | — |
GW LISK CO INC CLIFTON SPRINGS, NY14432 | — | — |
MANCHESTER FACILITY CLIFTON SPRINGS, NY14432 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 19 cities in Ontario
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Gorham (T) | A | 93.7 | 3K | 57 | Unresolved | |
| 2 | Geneva (C) | A | 93.5 | 13K | 24 | Health | |
| 3 | Farmington (T) | A | 91.4 | 13K | 10 | Health Unresolved | |
| 4 | Canandaigua (T) | A | 90.6 | 5K | 11 | Health Unresolved | |
| 5 | Manchester (V) | A- | 89.6 | 2K | 13 | Health Unresolved | |
| 6 | Canandaigua (C) | A- | 89.5 | 11K | 33 | Health Unresolved | |
| 7 | Phelps (V) | A- | 89.3 | 2K | 6 | ||
| 8 | Canandaigua (T) | A- | 87.6 | 10K | 12 | Unresolved | |
| 9 | Rushville (V) | A- | 85.7 | 2K | 8 | Health Unresolved | |
| 10 | Canadice (T) | A- | 85.5 | 1K | 9 | Unresolved | |
| 11 | Shortsville (V) | A- | 85 | 1K | 17 | Unresolved | |
| 12 | Clifton Springs (V) | B+ | 83 | 2K | 1 | Unresolved | |
| 13 | Geneva (T) | B+ | 82.9 | 3K | 5 | Unresolved | |
| 14 | Bloomfield (V) | B+ | 82.6 | 2K | 11 | Health Unresolved | |
| 15 | Naples (V) | B+ | 82.5 | 1K | 65 | Health Unresolved | |
| 16 | Seneca (T) | B+ | 80.5 | 3K | 4 | Unresolved | |
| 17 | Manchester (T) | B- | 72.3 | 2K | 40 | Health Unresolved | |
| 18 | Phelps (T) | B- | 71 | 3K | 110 | Health Unresolved | |
| 19 | South Bristol (T) | C- | 58.7 | 867 | 79 | Unresolved |