Natrona Water Quality Report
3 cities ranked · Average grade: C- · Wyoming
Avg Score
55.7
Cities Ranked
3
Health Violations
3
PFAS Detected
2
55.7
County avg score
3
Cities ranked
33%
A or B grade
67%
D or F grade
3
Health violations
2
PFAS detected
Grade Distribution
How Natrona cities scored
A
0
0%
Excellent
B
1
33%
Good
C
0
0%
Fair
D
0
0%
Poor
F
2
67%
Failing
Comparison
County vs Wyoming average
▼ 13.8 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
All 3 cities in Natrona
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Evansville | B+ | 83.5 | 3K | 24 | Health Unresolved | |
| 2 | Casper | F | 41.8 | 63K | 267 | Health Unresolved | |
| 3 | Mills | F | 41.8 | 11K | 288 | Health Unresolved |