Posey Water Quality Report
4 cities ranked · Average grade: B · Indiana
Avg Score
79.7
Cities Ranked
4
Health Violations
4
PFAS Detected
1
79.7
County avg score
4
Cities ranked
100%
A or B grade
0%
D or F grade
4
Health violations
1
PFAS detected
Grade Distribution
How Posey cities scored
A
2
50%
Excellent
B
2
50%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Indiana average
▲ 1.6 pts above state average
City Map
Water quality across Posey
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Posey
Worst cities
County context
99.2%
of residents on fluoridated water (CDC, 2020)
775,350
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Posey
Industrial polluters nearby
Facilities reporting the most surface-water releases in Posey, 2023.
Total reported releases to surface water: 775,350 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
SABIC INNOVATIVE PLASTICS MT. VERNON LLC MOUNT VERNON, IN47620 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 772,134 |
SIGECO A B BROWN GENERATING STATION MOUNT VERNON, IN47620 | Manganese compounds | 2,159 |
COUNTRYMARK REFINING & LOGISTICS LLC MOUNT VERNON, IN47620 | Ammonia | 1,055 |
MPLX TERMINALS LLC - MT VERNON LP TERMINAL MOUNT VERNON, IN47620 | Xylene (mixed isomers) | 3 |
BWXT NUCLEAR OPERATIONS GROUP MOUNT VERNON, IN47620 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 4 cities in Posey
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | New Harmony | A- | 88.7 | 2K | 38 | Health Unresolved | |
| 2 | Cynthiana | A- | 85 | 699 | 8 | Health Unresolved | |
| 3 | Mount Vernon | B- | 73.9 | 6K | 184 | Health Unresolved | |
| 4 | Poseyville | B- | 71.2 | 1K | 20 | Health Unresolved |