Iberville Parish Water Quality Report
6 cities ranked · Average grade: B- · Louisiana
Avg Score
72.3
Cities Ranked
6
Health Violations
6
PFAS Detected
2
72.3
County avg score
6
Cities ranked
67%
A or B grade
0%
D or F grade
6
Health violations
2
PFAS detected
Grade Distribution
How Iberville Parish cities scored
A
1
17%
Excellent
B
3
50%
Good
C
2
33%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Louisiana average
▲ 6.8 pts above state average
City Map
Water quality across Iberville Parish
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Iberville Parish
County context
9.5%
of residents on fluoridated water (CDC, 2020)
1,841,457
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Iberville Parish
Industrial polluters nearby
Facilities reporting the most surface-water releases in Iberville Parish, 2023.
Total reported releases to surface water: 1,841,457 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
SYNGENTA CROP PROTECTION LLC SAINT GABRIEL FACILITY SAINT GABRIEL, LA70776 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 1,197,246 |
TAMINCO US LLC SAINT GABRIEL, LA70776 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 475,916 |
WESTLAKE CHEMICALS & VINYLS LLC PLAQUEMINE, LA70764 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 82,897 |
THE DOW CHEMICAL CO - LOUISIANA OPERATIONS PLAQUEMINE, LA70764 | Ammonia | 82,394 |
SHINTECH PLAQUEMINE PLANT PLAQUEMINE, LA70764 | Lead | 2,789 |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 6 cities in Iberville Parish
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Maringouin | A- | 87.9 | 3K | 13 | Health Unresolved | |
| 2 | Carville | B+ | 83.8 | 600 | 9 | Health Unresolved | |
| 3 | Grosse Tete | B | 78.5 | 954 | 11 | Health Unresolved | |
| 4 | Rosedale | B- | 70.2 | 664 | 19 | Health Unresolved | |
| 5 | White Castle | C- | 57.9 | 3K | 18 | Health Unresolved | |
| 6 | Plaquemine | C- | 55.2 | 33K | 42 | Health PFAS Unresolved |