Valley Water Quality Report
3 cities ranked · Average grade: C+ · Idaho
Avg Score
67.5
Cities Ranked
3
Health Violations
3
PFAS Detected
0
67.5
County avg score
3
Cities ranked
67%
A or B grade
33%
D or F grade
3
Health violations
0
PFAS detected
Grade Distribution
How Valley cities scored
A
0
0%
Excellent
B
2
67%
Good
C
0
0%
Fair
D
0
0%
Poor
F
1
33%
Failing
Comparison
County vs Idaho average
▼ 0.7 pts below state average
City Map
Water quality across Valley
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Valley
Best cities
Worst cities
County context
1
Superfund site in Valley
0.0%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Valley
Industrial polluters nearby
Facilities reporting the most surface-water releases in Valley, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
HELCO PORTABLE CONCRETE PLANT (DONNELLY) 302231 DONNELLY, ID83615 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Valley
Superfund sites nearby
Federally tracked hazardous-waste sites within Valley on the EPA National Priorities List.
- STIBNITE YELLOW PINE MINING AREA
Source: EPA Superfund National Priorities List
Full Rankings