Lake Water Quality Report
4 cities ranked · Average grade: C- · Montana
Avg Score
56.8
Cities Ranked
4
Health Violations
4
PFAS Detected
0
56.8
County avg score
4
Cities ranked
25%
A or B grade
50%
D or F grade
4
Health violations
0
PFAS detected
Grade Distribution
How Lake cities scored
A
0
0%
Excellent
B
1
25%
Good
C
1
25%
Fair
D
1
25%
Poor
F
1
25%
Failing
Comparison
County vs Montana average
▼ 8.9 pts below state average
City Map
Water quality across Lake
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Lake
Best cities
Worst cities
County context
1
Superfund site in Lake
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Lake
Industrial polluters nearby
Facilities reporting the most surface-water releases in Lake, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
JTL GROUP-KALISPELL DBA KNIFE RIVER - KALISPELL KALISPELL, MT59901 | — | — |
WEYERHAEUSER NR KALISPELL, MT59901 | — | — |
CITYSERVICEVALCON LLC KALISPELL BULK FACILITY KALISPELL, MT59901 | — | — |
CITYSERVICEVALCON LLC SOUTH PLANT BULK FACILITY KALISPELL, MT59901 | — | — |
WEYERHAEUSER NR COLUMBIA FALLS, MT59912 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Lake
Superfund sites nearby
Federally tracked hazardous-waste sites within Lake on the EPA National Priorities List.
- ANACONDA ALUMINUM CO COLUMBIA FALLS REDUCTION PLANT
Source: EPA Superfund National Priorities List
Full Rankings
All 4 cities in Lake
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | St Ignatius | B | 76.5 | 765 | 175 | Health Unresolved | |
| 2 | Ronan | C- | 56.5 | 3K | 175 | Health Unresolved | |
| 3 | Polson | D+ | 51.2 | 6K | 380 | Health Unresolved | |
| 4 | Pablo | F | 43 | 4K | 542 | Health Unresolved |