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Tom Green County FWSD 2 Christoval

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
482 people
Connections
282
Water source
Groundwater influenced by surface water
Based in
Christoval, TX
County
Tom Green
Owner
Local government
The ZIP code it serves

76935

The short answer

3 results are above the health goal. The worst: Lead, above the health goal. No health-based violations on file since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 1994 to 2025.

Arsenic, uranium, total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride and chromium (total): Texas’s own results, samples taken from Feb. 18, 2020 to Sept. 3, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal3

Lead

Comes from pipes, often your own

Above the health goal

2.6ppb

90th percentile, 2023 to 2025

In the latest period, 9 in 10 homes sampled were at or below 2.6 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Arsenic

Comes from the source

Above the health goal

1.2ppb

Highest yearly average, 2020 to 2026

2026, one sample: 1.1 ppb

Averaged by year, the highest was 1.2 ppb, in 2024: below EPA’s legal limit of 10 ppb, but above its health goal of zero. In 2026, the latest year on file, its one sample was 1.1 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.4 ppb, in 2013.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Uranium

Comes from the source

Above the health goal

1.3ppb

Highest yearly average, 2024

Averaged by year, the highest was 1.3 ppb, in 2024: below EPA’s legal limit of 30 ppb, but above its health goal of zero. That is the only year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.5 ppb, in 2018.

What handles it

Below EPA’s limits5

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

24.7ppb

Highest yearly average, 2020 to 2026

2026 average: 20.4 ppb

Averaged by year, the highest was 24.7 ppb, in 2025, below EPA’s legal limit of 80 ppb. Its highest single sample was 41.7 ppb. In 2026, the latest year on file, its three samples averaged 20.4 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 28.3 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

9.9ppb

Highest yearly average, 2020 to 2026

2026 average: 6.7 ppb

Averaged by year, the highest was 9.9 ppb, in 2025, below EPA’s legal limit of 60 ppb. Its highest single sample was 20.3 ppb. In 2026, the latest year on file, its three samples averaged 6.7 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 7.8 ppb, in 2018.

What handles it

No certification claim covers this compound yet.

Nitrate

Comes from the source

Below EPA’s limits

1.6ppm

Highest sample; found in 7 of 7

2026, one sample: 1.5 ppm

The highest sample, in 2022, was 1.6 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its one sample was 1.5 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 2.3 ppm, in 2019.

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

0.38ppm

Highest yearly average, 2020 to 2026

2026, one sample: 0.26 ppm

Averaged by year, the highest was 0.38 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. In 2026, the latest year on file, its one sample was 0.26 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.34 ppm, in 2012.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

4.7ppb

Highest yearly average, 2020 to 2026

2026, one sample: 1.2 ppb

Averaged by year, the highest was 4.7 ppb, in 2022, below EPA’s legal limit of 100 ppb. In 2026, the latest year on file, its one sample was 1.2 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.82 ppb, in 2013.

What handles it

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

    Claims: Lead Reduction, Arsenic (Pentavalent)<=50 ppb Reduction

    For: Lead, Arsenic

    Other certifiers’ wording: Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claims: Lead Reduction, Arsenic (Pentavalent)<=50 ppb Reduction, Uranium

    For: Lead, Arsenic, Uranium

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. 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

Compare five-year costs

The best water filters for lead, ranked

The best reverse osmosis systems, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There are 80 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Arsenic, uranium, total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride and chromium (total) results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Tom Green County FWSD 2 Christoval’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. 18, 2020 to Sept. 3, 2026.

Testing your own tap

Tom Green County FWSD 2 Christoval’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 lab Texas certifies closest to the area Tom Green County FWSD 2 Christoval serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • SKG Engineering, LLC

    San Angelo, TX · about 28 miles

    Certified for bacteria

    (325) 655-1288

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 TX2260004. Rebuilt from EPA data on Oct. 18, 2026.

Nearby

All Texas utilities

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