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Tap water quality report

Karnes City, TX

EPA monitoring detected 26 contaminants across the 2 water suppliers serving Karnes City. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
10,557
people served
26
contaminants found
Texas rankings Lead in Texas PFAS in Texas

What was found in Karnes City's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
3314.999999999998 µg/L 33%
of the EPA limit 10000 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Nitrate-Nitrite
2886 µg/L 29%
of the EPA limit 10000 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2015
2/2 SYR4
Fluoride
998.5 µg/L 25%
of the EPA limit 4000 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2017
2/2 SYR4
Copper
165.49999999999997 µg/L 13%
of the EPA limit 1300 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2018
2/2 SYR4
TTHM
104.24999999999997 µg/L 130%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Lithium
76.5 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2024
2/2 UCMR-5
Barium
75.7 µg/L 3.8%
of the EPA limit 2000 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2017
2/2 SYR4
Bromoform
47.06000000000001 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
Highest in the city: 51.85000000000001 µg/L — CITY OF KARNES CITY · 4,269 people · 2019
2/2 SYR4
Dibromochloromethane
38.040000000000006 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
22.879999999999985 µg/L 38%
of the EPA limit 60 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Bromodichloromethane
15.2 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Dibromoacetic Acid
13.559999999999997 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Arsenic
13.319999999999999 µg/L 133%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2019
1/2 SYR4
Gross Beta Particle Activity
10.07 pCi/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2016
1/2 SYR4
Monochloroacetic Acid
7.67 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Selenium
3.48 µg/L 7%
of the EPA limit 50 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2017
Highest in the city: 6.9 µg/L — CITY OF KARNES CITY · 4,269 people · 2019
2/2 SYR4
Lead
5.544999999999997 µg/L 37%
of the EPA limit 15 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2018
2/2 SYR4
Dichloroacetic Acid
5.3 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Combined Uranium
5.2 µg/L 17%
of the EPA limit 30 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2016
1/2 SYR4
Chloroform
4.5 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Trichloroacetic Acid
3.5 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Monobromoacetic Acid
3.05 µg/L
No EPA limit set
Main supplier: EL OSO WSC · 6,288 people · 2019
2/2 SYR4
Gross Alpha, Excl. Radon And U
2 pCi/L 13%
of the EPA limit 15 pCi/L
Main supplier: EL OSO WSC · 6,288 people · 2016
1/2 SYR4
Styrene
0.5000 µg/L 0.5%
of the EPA limit 100 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2019
1/2 SYR4
Xylenes, Total
0.5000 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: EL OSO WSC · 6,288 people · 2019
1/2 SYR4
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
Main supplier: EL OSO WSC · 6,288 people · 2023
Highest in the city: 0.0022 mg/L — CITY OF KARNES CITY · 4,269 people · 2023
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 95th percentile of the system's samples — 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 Karnes City

SupplierPopulation served
EL OSO WSC 6,288
CITY OF KARNES CITY 4,269

Frequently asked questions about Karnes City tap water

Is Karnes City tap water safe to drink?

EPA testing detected 26 contaminants in the water serving Karnes City. 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 Karnes City?

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

What contaminants are in Karnes City's water?

The contaminants EPA monitoring detected in Karnes City include Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM. The full list, with the level at the main supplier 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.