St. Landry Parish Water Quality Report
13 cities ranked · Average grade: C+ · Louisiana
Avg Score
68.1
Cities Ranked
13
Health Violations
12
PFAS Detected
5
68.1
County avg score
13
Cities ranked
54%
A or B grade
23%
D or F grade
12
Health violations
5
PFAS detected
Grade Distribution
How St. Landry Parish cities scored
A
1
8%
Excellent
B
6
46%
Good
C
3
23%
Fair
D
1
8%
Poor
F
2
15%
Failing
Comparison
County vs Louisiana average
▲ 2.6 pts above state average
City Map
Water quality across St. Landry Parish
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in St. Landry Parish
County context
11.1%
of residents on fluoridated water (CDC, 2020)
263,965
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in St. Landry Parish
Industrial polluters nearby
Facilities reporting the most surface-water releases in St. Landry Parish, 2023.
Total reported releases to surface water: 263,965 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
ALON REFINING KROTZ SPRINGS INC KROTZ SPRINGS, LA70750 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 263,965 |
LEMOYEN LLC - LEMOYEN PLANT MORROW, LA71356 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 13 cities in St. Landry Parish
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Lawtell | A- | 85.3 | 10K | 21 | Health Unresolved | |
| 2 | Washington | B+ | 83.1 | 2K | 16 | Health Unresolved | |
| 3 | Port Barre | B+ | 82.8 | 7K | 55 | Health Unresolved | |
| 4 | Morrow | B+ | 82.7 | 2K | 1 | Unresolved | |
| 5 | Cankton | B+ | 81.9 | 3K | 20 | Health Unresolved | |
| 6 | Krotz Springs | B+ | 81.5 | 3K | 21 | Health Unresolved | |
| 7 | Eunice | B- | 70.8 | 10K | 33 | Health Unresolved | |
| 8 | Leonville | C+ | 69.2 | 10K | 31 | Health Unresolved | |
| 9 | Sunset | C+ | 69 | 11K | 56 | Health Unresolved | |
| 10 | Opelousas | C- | 57.7 | 35K | 56 | Health Unresolved | |
| 11 | Palmetto | D | 46.5 | 2K | 45 | Health Unresolved | |
| 12 | Melville | F | 41 | 2K | 106 | Health Unresolved | |
| 13 | Grand Coteau | F | 34 | 2K | 48 | Health Unresolved |