Cascade Water Quality Report
7 cities ranked · Average grade: B- · Montana
Avg Score
73.1
Cities Ranked
7
Health Violations
5
PFAS Detected
1
73.1
County avg score
7
Cities ranked
71%
A or B grade
14%
D or F grade
5
Health violations
1
PFAS detected
Grade Distribution
How Cascade cities scored
A
2
29%
Excellent
B
3
43%
Good
C
1
14%
Fair
D
0
0%
Poor
F
1
14%
Failing
Comparison
County vs Montana average
▲ 7.4 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 7 cities in Cascade
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Cascade | A | 94.3 | 650 | 8 | Unresolved | |
| 2 | Sun River | A- | 86.2 | 630 | 53 | Health Unresolved | |
| 3 | Belt | B+ | 83.8 | 745 | 49 | Health Unresolved | |
| 4 | Vaughn | B+ | 82.4 | 665 | 29 | Unresolved | |
| 5 | Black Eagle | B | 75.2 | 2K | 45 | Health Unresolved | |
| 6 | Sand Coulee | C- | 55.6 | 590 | 507 | Health Unresolved | |
| 7 | Great Falls | F | 34.5 | 76K | 1361 | Health Unresolved |