St. Lawrence Water Quality Report
14 cities ranked · Average grade: A- · New York
Avg Score
87.3
Cities Ranked
14
Health Violations
7
PFAS Detected
0
87.3
County avg score
14
Cities ranked
100%
A or B grade
0%
D or F grade
7
Health violations
0
PFAS detected
Grade Distribution
How St. Lawrence cities scored
A
11
79%
Excellent
B
3
21%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs New York average
▲ 6.6 pts above state average
City Map
Water quality across St. Lawrence
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in St. Lawrence
County context
107,278
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in St. Lawrence
Industrial polluters nearby
Facilities reporting the most surface-water releases in St. Lawrence, 2023.
Total reported releases to surface water: 107,278 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
NORTH COUNTRY DAIRY LLC NORTH LAWRENCE, NY12967 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 106,350 |
ST LAWRENCE ZINC CO BALMAT 4 MINE & MILL GOUVERNEUR, NY13642 | Zinc compounds | 928 |
VANDERBILT MINERALS LLC - GOUVERNEUR MINERALS DIV GOUVERNEUR, NY13642 | Lead | 0 |
POTTERS INDUSTRIES LLC POTSDAM, NY13676 | Lead | 0 |
CORNING INC CANTON, NY13617 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 14 cities in St. Lawrence
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Canton (V) | A+ | 95.4 | 7K | 7 | Unresolved | |
| 2 | Heuvelton (V) | A | 94.3 | 830 | 25 | Unresolved | |
| 3 | Gouverneur (V) | A | 91.1 | 4K | 52 | Health Unresolved | |
| 4 | Madrid (T) | A | 90.9 | 800 | 7 | Unresolved | |
| 5 | Colton (T) | A- | 89.8 | 850 | 2 | Health Unresolved | |
| 6 | Massena (V) | A- | 89.7 | 17K | 13 | Health Unresolved | |
| 7 | Waddington (V) | A- | 88.8 | 944 | 11 | Unresolved | |
| 8 | Fine (T) | A- | 87.7 | 1K | 102 | Health Unresolved | |
| 9 | Norwood (V) | A- | 86.7 | 2K | 1 | Unresolved | |
| 10 | Louisville (T) | A- | 85.8 | 3K | 2 | Unresolved | |
| 11 | Ogdensburg (C) | A- | 85.6 | 10K | 6 | Health Unresolved | |
| 12 | Lisbon (T) | B+ | 83.2 | 564 | 35 | Unresolved | |
| 13 | Potsdam (V) | B+ | 82.4 | 8K | 105 | Health Unresolved | |
| 14 | Norfolk (T) | B- | 70.8 | 2K | 181 | Health Unresolved |