71
County avg score
6
Cities ranked
67%
A or B grade
17%
D or F grade
4
Health violations
1
PFAS detected
Grade Distribution
How Cascade cities scored
A
1
17%
Excellent
B
3
50%
Good
C
1
17%
Fair
D
0
0%
Poor
F
1
17%
Failing
Comparison
County vs Montana average
▲ 5.8 pts above state average
City Map
Water quality across Cascade
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Cascade
Best cities
Worst cities
County context
3
Superfund sites in Cascade
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Cascade
Industrial polluters nearby
Facilities reporting the most surface-water releases in Cascade, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
US DOD USAF MALMSTROM AFB MALMSTROM AFB, MT594027536 | — | — |
CHS GREAT FALLS FEED GREAT FALLS, MT59405 | — | — |
CALUMET MONTANA REFINING LLC. GREAT FALLS, MT59404 | — | — |
BIG SKY SCIENTIFIC L.L.C. SUN RIVER, MT59483 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Cascade
Superfund sites nearby
Federally tracked hazardous-waste sites within Cascade on the EPA National Priorities List.
- ACM SMELTER AND REFINERY
- BARKER HUGHESVILLE MINING DISTRICT
- CARPENTER SNOW CREEK MINING DISTRICT
Source: EPA Superfund National Priorities List
Full Rankings
All 6 cities in Cascade
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Cascade | A | 94.3 | 650 | 8 | Unresolved | |
| 2 | Belt | B+ | 83.8 | 745 | 49 | Health Unresolved | |
| 3 | Vaughn | B+ | 82.4 | 585 | 29 | Unresolved | |
| 4 | Black Eagle | B | 75.2 | 1K | 45 | Health Unresolved | |
| 5 | Sand Coulee | C- | 55.6 | 510 | 507 | Health Unresolved | |
| 6 | Great Falls | F | 34.5 | 65K | 1361 | Health Unresolved |