WaterVerge

Ascension Parish Water Quality Report

2 cities ranked · Average grade: B · Louisiana

Avg Score
75.5
Cities Ranked
2
Health Violations
2
PFAS Detected
2
Live Water Alerts for Louisiana →
75.5
County avg score
2
Cities ranked
50%
A or B grade
0%
D or F grade
2
Health violations
2
PFAS detected

How Ascension Parish cities scored

50%
50%
A
1
50%
Excellent
B
0
0%
Good
C
1
50%
Fair
D
0
0%
Poor
F
0
0%
Failing

County vs Louisiana average

B
Ascension Parish
75.5/100
C+
Louisiana avg
65.5/100
▲ 10.0 pts above state average

Water quality across Ascension Parish

Each dot is a city, colored by grade. Click any city to view its full report.

Louisiana city water quality map

Top & bottom cities in Ascension Parish

47.9%
of residents on fluoridated water (CDC, 2020)
3,179,592
lbs/yr to surface water · top 10 TRI facilities

Top industrial polluters in Ascension Parish

Industrial polluters nearby

Facilities reporting the most surface-water releases in Ascension Parish, 2023.

Total reported releases to surface water: 3,179,592 lbs

FacilityTop chemicalTo surface water (lbs/yr)
CF INDUSTRIES NITROGEN LLC
Chemicals · CF INDUSTRIES HOLDINGS INC
DONALDSONVILLE, LA70346
Nitrate compounds (water dissociable; reportable only when in aqueous solution)1,514,677
BASF CORP
Chemicals · BASF CORP
GEISMAR, LA70734
Nitrate compounds (water dissociable; reportable only when in aqueous solution)1,113,061
PCS NITROGEN FERTILIZER LP
Chemicals · NUTRIEN US TOPCO LLC
GEISMAR, LA70734
Nitrate compounds (water dissociable; reportable only when in aqueous solution)469,382
SHELL CHEMICAL LP
Chemicals · SHELL PETROLEUM INC
GEISMAR, LA70734
Nitrate compounds (water dissociable; reportable only when in aqueous solution)44,273
OCCIDENTAL CHEMICAL HOLDING CORP - GEISMAR PLANT
Chemicals · OCCIDENTAL PETROLEUM CORP
GEISMAR, LA70734
Methanol28,779

+ 5 more facilities

Source: EPA Toxic Release Inventory (TRI) 2023

All 2 cities in Ascension Parish

# City Grade Score Score Population Violations Issues
1 Gonzales
A-
87.7
17K 30 Health Unresolved
2 Donaldsonville
C
63.3
12K 104 Health PFAS Unresolved
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