Ouachita Parish Water Quality Report
3 cities ranked · Average grade: D · Louisiana
Avg Score
49.6
Cities Ranked
3
Health Violations
3
PFAS Detected
2
49.6
County avg score
3
Cities ranked
0%
A or B grade
67%
D or F grade
3
Health violations
2
PFAS detected
Grade Distribution
How Ouachita Parish cities scored
A
0
0%
Excellent
B
0
0%
Good
C
1
33%
Fair
D
1
33%
Poor
F
1
33%
Failing
Comparison
County vs Louisiana average
▼ 15.9 pts below state average
City Map
Water quality across Ouachita Parish
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Ouachita Parish
Best cities
Worst cities
County context
3.4%
of residents on fluoridated water (CDC, 2020)
215,586
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Ouachita Parish
Industrial polluters nearby
Facilities reporting the most surface-water releases in Ouachita Parish, 2023.
Total reported releases to surface water: 215,586 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
ADVANCION CORP STERLINGTON, LA71280 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 176,841 |
GRAPHIC PACKAGING INTERNATIONAL LLC WEST MONROE, LA71292 | Methanol | 38,745 |
LEXICON INC DBA STEEL FABRICATORS OF MONROE MONROE, LA71201 | — | — |
RIVER CITY READY MIX LLC - MONROE MONROE, LA71203 | — | — |
ECOLOGICAL TANKS INC DOWNSVILLE, LA71234 | — | — |
+ 2 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 3 cities in Ouachita Parish
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Calhoun | C- | 57.5 | 4K | 60 | Health Unresolved | |
| 2 | West Monroe | D+ | 50.2 | 117K | 658 | Health Unresolved | |
| 3 | Monroe | F | 41.1 | 65K | 88 | Health Unresolved |