41.8
County avg score
2
Cities ranked
0%
A or B grade
100%
D or F grade
2
Health violations
2
PFAS detected
Grade Distribution
How Natrona cities scored
A
0
0%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
0
0%
Poor
F
2
100%
Failing
Comparison
County vs Wyoming average
▼ 27.9 pts below state average
City Map
Water quality across Natrona
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Natrona
Best cities
Worst cities
County context
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Natrona
Industrial polluters nearby
Facilities reporting the most surface-water releases in Natrona, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
KNIFE RIVER CASPER CASPER, WY82601 | — | — |
CUSTOM FIBERGLASS INC CASPER, WY82604 | — | — |
HF SINCLAIR CASPER REFINING LLC CASPER, WY82609 | — | — |
KNIFE RIVER MATERIALS YARD CASPER, WY82604 | — | — |
TALLGRASS MIDSTREAM LLC - CASPER GAS PLANT & COMPRESSOR STAT CASPER, WY82609 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings