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Tap water quality report

Gonzales, TX

EPA monitoring detected 36 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
19,522
people served
36
contaminants found
Texas rankings Lead in Texas PFAS in Texas

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
Nitrate
2040 µg/L 20%
of the EPA limit 10000 µg/L
 2/2 SYR4
Fluoride
1280 µg/L 32%
of the EPA limit 4000 µg/L
 2/2 SYR4
Nitrate-Nitrite
1220 µg/L 12%
of the EPA limit 10000 µg/L
 1/2 SYR4
Copper
830 µg/L 64%
of the EPA limit 1300 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
480 µg/L 800%
of the EPA limit, in the worst sample — 60 µg/L
 2/2 SYR4
TTHM
399 µg/L 499%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Barium
283 µg/L 14%
of the EPA limit 2000 µg/L
 2/2 SYR4
Chloroform
252 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
248.7 µg/L
No EPA limit set
 2/2 SYR4
Dichloroacetic Acid
207.6 µg/L
No EPA limit set
 2/2 SYR4
Cyanide
110 µg/L 55%
of the EPA limit 200 µg/L
 2/2 SYR4
Bromodichloromethane
84 µg/L
No EPA limit set
 2/2 SYR4
Lithium
50.7 µg/L
No EPA limit set
 2/2 UCMR-5
Dibromochloromethane
43.9 µg/L
No EPA limit set
 2/2 SYR4
Bromoform
22.6 µg/L
No EPA limit set
 2/2 SYR4
Lead
17 µg/L 113%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Gross Beta Particle Activity
13.1 pCi/L
No EPA limit set
 1/2 SYR4
Monochloroacetic Acid
12.5 µg/L
No EPA limit set
 2/2 SYR4
Dibromoacetic Acid
11.5 µg/L
No EPA limit set
 2/2 SYR4
Gross Alpha, Excl. Radon And U
5.1 pCi/L 34%
of the EPA limit 15 pCi/L
 1/2 SYR4
Selenium
3.5 µg/L 7%
of the EPA limit 50 µg/L
 1/2 SYR4
Combined Radium (-226 And -228)
3.4 pCi/L 68%
of the EPA limit 5 pCi/L
 2/2 SYR4
Dalapon
3.4 µg/L 1.7%
of the EPA limit 200 µg/L
 1/2 SYR4
Monobromoacetic Acid
2.7 µg/L
No EPA limit set
 2/2 SYR4
Arsenic
2.4 µg/L 24%
of the EPA limit 10 µg/L
 1/2 SYR4
Xylenes, Total
1.01 µg/L 0%
of the EPA limit 10000 µg/L
 2/2 SYR4
Di(2-ethylhexyl) Phthalate
0.9300 µg/L 16%
of the EPA limit 6 µg/L
 1/2 SYR4
6:2 Fts
0.5970 µg/L
No EPA limit set
 1/2 UCMR-5
Hexachlorocyclopentadiene
0.2300 µg/L 0.5%
of the EPA limit 50 µg/L
 1/2 SYR4
Atrazine
0.1400 µg/L 4.7%
of the EPA limit 3 µg/L
 2/2 SYR4
Pfpea
0.0089 µg/L
No EPA limit set
 2/2 UCMR-5
Lead
0.0075 mg/L 50%
of the EPA limit 0.0150 mg/L
 2/2 LCR
Pfba
0.0061 µg/L
No EPA limit set
 1/2 UCMR-5
Pfhxa
0.0052 µg/L
No EPA limit set
 1/2 UCMR-5
PFBS
0.0043 µg/L
No EPA limit set
 1/2 UCMR-5
Adona
0.0032 µg/L
No EPA limit set
 1/2 UCMR-5
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
GONZALES COUNTY WSC 10,350
CITY OF GONZALES 9,172

Frequently asked questions about Gonzales tap water

Is Gonzales tap water safe to drink?

EPA testing detected 36 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, Texas 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 Nitrate, Fluoride, Nitrate-Nitrite, Copper, Total Haloacetic Acids (HAA5). 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.