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Tap water quality report

Gonzales, LA

EPA monitoring detected 21 contaminants across the 2 water suppliers serving Gonzales. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
16,875
people served
21
contaminants found
Louisiana rankings Lead in Louisiana PFAS in Louisiana

What was found in Gonzales's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
200 µg/L 15%
of the EPA limit 1300 µg/L
 1/2 SYR4
Nitrate-Nitrite
200 µg/L 2%
of the EPA limit 10000 µg/L
 1/2 SYR4
Lead
122 µg/L 813%
of the EPA limit, in the worst sample — 15 µg/L
 1/2 SYR4
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 2/2 SYR4
TTHM
61.1 µg/L 76%
of the EPA limit 80 µg/L
 2/2 SYR4
Chloroform
55.7 µg/L
No EPA limit set
 2/2 SYR4
Total Haloacetic Acids (HAA5)
31.5 µg/L 53%
of the EPA limit 60 µg/L
 2/2 SYR4
Lithium
29.4 µg/L
No EPA limit set
 1/2 UCMR-5
Dichloroacetic Acid
22.3 µg/L
No EPA limit set
 2/2 SYR4
Selenium
10 µg/L 20%
of the EPA limit 50 µg/L
 1/2 SYR4
Trichloroacetic Acid
9.2 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
5.4 µg/L
No EPA limit set
 2/2 SYR4
Monochloroacetic Acid
3.2 µg/L
No EPA limit set
 2/2 SYR4
Gross Beta Particle Activity
3.19 pCi/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
2.1 µg/L
No EPA limit set
 2/2 SYR4
Combined Radium (-226 And -228)
1.9 pCi/L 38%
of the EPA limit 5 pCi/L
 1/2 SYR4
Di(2-ethylhexyl) Phthalate
1.11 µg/L 19%
of the EPA limit 6 µg/L
 2/2 SYR4
Pentachlorophenol
0.7540 µg/L 75%
of the EPA limit 1 µg/L
 1/2 SYR4
Dibromoacetic Acid
0.5600 µg/L
No EPA limit set
 1/2 SYR4
Bromoform
0.5400 µg/L
No EPA limit set
 1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 2/2 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Gonzales

SupplierPopulation served
CITY OF GONZALES WATER SYSTEM 16,806
ST AMANT TRAILER PARK 69

Frequently asked questions about Gonzales tap water

Is Gonzales tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Gonzales. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Gonzales?

2 public water suppliers report drinking-water monitoring for Gonzales, Louisiana to the EPA. Each is listed above with its population served.

What contaminants are in Gonzales's water?

The contaminants EPA monitoring detected in Gonzales include Copper, Nitrate-Nitrite, Lead, Fluoride, TTHM. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.