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Cherokee Shores Water Supply

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
3,402 people
Connections
1,134
Water source
Surface water
Based in
Austin, TX
County
Henderson
Owner
Private
The ZIP code it serves

75124

The short answer

1 result is above EPA’s legal limit. The worst: Total trihalomethanes (TTHM), above the legal limit. 4 health-based violations since 2016.

What handles it

What was found

Total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride, chromium (total), arsenic and uranium: Texas’s own results, samples taken from Feb. 6, 2020 to Aug. 20, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Total trihalomethanes (TTHM)

Forms or is added in treatment

Above the legal limit

72.1ppb

Highest yearly average, 2020 to 2026

2026 average: 55.1 ppb

Averaged by year, the highest was 72.1 ppb, in 2023, below EPA’s legal limit of 80 ppb. Its highest single sample was 140 ppb. In 2026, the latest year on file, its six samples averaged 55.1 ppb. EPA judges this limit at each sampling point, and recorded violations for total trihalomethanes (TTHM) at this utility in 2023 and 2024. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 94.3 ppb, in 2015, and EPA recorded violations in 2014, 2015 and 2016.

What handles it

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

Below EPA’s limits4

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

32.1ppb

Highest yearly average, 2020 to 2026

2026 average: 31.1 ppb

Averaged by year, the highest was 32.1 ppb, in 2021, below EPA’s legal limit of 60 ppb. Its highest single sample was 48.3 ppb. In 2026, the latest year on file, its six samples averaged 31.1 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 46.9 ppb, in 2015.

What handles it

No certification claim covers this compound yet.

Nitrate

Comes from the source

Below EPA’s limits

0.21ppm

Highest sample; found in 6 of 6

2025, one sample: 0.088 ppm

The highest sample, in 2020, was 0.21 ppm, below EPA’s legal limit of 10 ppm. In 2025, the latest year on file, its one sample was 0.088 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.38 ppm, in 2016.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.064ppm

Highest yearly average, 2020 to 2025

2025, one sample: 0.045 ppm

Averaged by year, the highest was 0.064 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 0.045 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.17 ppm, in 2012.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

1.2ppb

Highest yearly average, 2020 to 2025

2025: not found

Averaged by year, the highest was 1.2 ppb, in 2024, below EPA’s legal limit of 100 ppb. In 2025, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.3 ppb, in 2014.

What handles it

3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Lead
  • Uranium

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claim: Trihalomethanes (TTHM) Reduction

    For: Total trihalomethanes (TTHM)

    Other certifiers’ wording: VOC Reduction

  • NSF/ANSI 58

    Claim: Trihalomethanes (TTHM) Reduction

    For: Total trihalomethanes (TTHM)

At the tap, or for the whole house?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

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Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2024 to June 30, 20240.082 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2024 to March 31, 20240.083 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2023 to Dec. 31, 20230.084 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2016 to March 31, 20160.085 MG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 2 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride, chromium (total), arsenic and uranium results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Cherokee Shores Water Supply’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. 6, 2020 to Aug. 20, 2026.

Testing your own tap

Cherokee Shores Water Supply’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 Cherokee Shores Water Supply serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Northeast Texas Public Health District Laboratory

    Tyler, TX · about 39 miles

    Certified for bacteria

    (903) 535-0090

  • Analytical Environmental Labs

    Tyler, TX · about 39 miles

    Certified for bacteria

    (903) 509-8700

  • Environmental Monitoring Lab

    Winona, TX · about 52 miles

    Certified for bacteria

    (903) 877-9222

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 TX1070206. Rebuilt from EPA data on Oct. 18, 2026.

Also in Henderson County

All Texas utilities

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