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City of Kosse

What EPA’s and Texas’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
461 people
Connections
290
Water source
Groundwater
Based in
Kosse, TX
County
Limestone
Owner
Local government
The ZIP code it serves

76653

The short answer

Nothing in EPA’s and Texas’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. No health-based violations on file since 2016.

What was found

Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, chromium (total), nitrate, arsenic and uranium: Texas’s own results, samples taken from Feb. 25, 2020 to July 15, 2026, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits5

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

22.6ppb

Highest yearly average, 2020 to 2026

2026 average: 16.4 ppb

Averaged by year, the highest was 22.6 ppb, in 2020, below EPA’s legal limit of 80 ppb. Its highest single sample was 40.4 ppb. In 2026, the latest year on file, its three samples averaged 16.4 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 72.5 ppb, in 2019.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

7.0ppb

Highest yearly average, 2020 to 2026

2026 average: 3.8 ppb

Averaged by year, the highest was 7.0 ppb, in 2020, below EPA’s legal limit of 60 ppb. Its highest single sample was 11.6 ppb. In 2026, the latest year on file, its three samples averaged 3.8 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 36 ppb, in 2018.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.28ppm

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 0.28 ppm, in 2026, below EPA’s legal limit of 4.0 ppm. That was also the latest year on file.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

3.2ppb

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 3.2 ppb, in 2020, below EPA’s legal limit of 100 ppb. In 2026, the latest year on file, it wasn’t found in its one sample.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.05ppm

Highest sample; found in 7 of 7

2026, one sample: 0.027 ppm

The highest sample, in 2022, was 0.05 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its one sample was 0.027 ppm.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Lead
  • Uranium

Violations since 2016

No health-based violations on file with EPA since 2016. There are 8 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, chromium (total), nitrate, arsenic and uranium results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. City of Kosse’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Texas’s results run from Feb. 25, 2020 to July 15, 2026.

Testing your own tap

City of Kosse’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Texas certifies.

The 3 labs Texas certifies closest to the area City of Kosse serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Bio-Chem Lab, Inc.

    West, TX · about 43 miles

    Certified for bacteria, lead and copper

    (254) 829-8001

  • Aqua-Tech Laboratories, Inc.

    Bryan, TX · about 44 miles

    Certified for bacteria, lead and copper

    (979) 778-3707

  • Environmental Monitoring Lab

    Hillsboro, TX · about 59 miles

    Certified for bacteria

    (254) 582-2622

Texas Well Owner Network, Texas A&M AgriLife Extension: Well Informed screening events, where well owners bring in water samples to be screened for common contaminants, followed by an hour-long session explaining the results. Upcoming events are on the network's calendar. Trainings, Texas Well Owner Network.

All 80 certified labs for Texas

Sources

PWSID TX1470003. Rebuilt from EPA data on Oct. 18, 2026.

Also in Limestone County

All Texas utilities

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