80.4
County avg score
14
Cities ranked
79%
A or B grade
7%
D or F grade
11
Health violations
7
PFAS detected
Grade Distribution
How Jefferson cities scored
A
7
50%
Excellent
B
4
29%
Good
C
2
14%
Fair
D
1
7%
Poor
F
0
0%
Failing
Comparison
County vs Missouri average
▲ 1.3 pts above state average
City Map
Water quality across Jefferson
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Jefferson
Worst cities
County context
2
Superfund sites in Jefferson
80.2%
of residents on fluoridated water (CDC, 2020)
49
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Jefferson
Industrial polluters nearby
Facilities reporting the most surface-water releases in Jefferson, 2023.
Total reported releases to surface water: 49 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
RIVER CEMENT CO (DBA BUZZI UNICEM USA) FESTUS, MO63028 | Ammonia | 49 |
METAL CONTAINER CORP - ARNOLD CAN PLANT ARNOLD, MO63010 | — | — |
SUPERIOR INDUSTRIAL SOLUTIONS INC. ARNOLD, MO63010 | — | — |
PVS DX INC. FESTUS, MO63028 | — | — |
AMEREN MISSOURI RUSH ISLAND ENERGY CENTER FESTUS, MO63028 | — | — |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Jefferson
Superfund sites nearby
Federally tracked hazardous-waste sites within Jefferson on the EPA National Priorities List.
- MINKER STOUT ROMAINE CREEK
- SOUTHWEST JEFFERSON COUNTY MINING
Source: EPA Superfund National Priorities List
Full Rankings
All 14 cities in Jefferson
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Crystal City | A | 91.7 | 5K | 11 | Health Unresolved | |
| 2 | Murphy | A | 90.8 | 17K | 40 | Health Unresolved | |
| 3 | Parkdale | A | 90.8 | 17K | 40 | Health Unresolved | |
| 4 | Herculaneum | A | 90.5 | 4K | 12 | Health Unresolved | |
| 5 | Barnhart | A- | 89.8 | 37K | 2 | Health Unresolved | |
| 6 | Pevely | A- | 87 | 6K | 19 | Unresolved | |
| 7 | Hilsboro | A- | 85.9 | 2K | 4 | Unresolved | |
| 8 | Imperial | B+ | 82.9 | 10K | 102 | Health Unresolved | |
| 9 | House Springs | B+ | 82.2 | 8K | 96 | Health Unresolved | |
| 10 | Arnold | B | 79.2 | 39K | 9 | Unresolved | |
| 11 | De Soto | B- | 72.5 | 9K | 167 | Health Unresolved | |
| 12 | Cedar Hill | C+ | 66.4 | 5K | 48 | Health Unresolved | |
| 13 | Festus | C | 65 | 15K | 286 | Health Unresolved | |
| 14 | Hillsboro | D+ | 50.2 | 13K | 92 | Health Unresolved |