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Deer Butte Subdivision

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
225 people
Connections
75
Water source
Groundwater
Based in
Austin, TX
County
Parker
Owner
Private
The 2 ZIP codes it serves

76082, 76085

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 and arsenic: Texas’s own results, samples taken from Aug. 10, 2020 to Dec. 3, 2025, with EPA’s 2012 to 2019 file for earlier years.

Uranium: EPA’s compliance monitoring file, samples taken from Nov. 1, 2017 to Nov. 1, 2017. Newer results are in the utility’s annual water quality report.

Below EPA’s limits5

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

74.4ppb

Highest yearly average, 2021 to 2024

Averaged by year, the highest was 74.4 ppb, in 2024, below EPA’s legal limit of 80 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 14.7 ppb, in 2016.

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

27.7ppb

Highest yearly average, 2021 to 2024

Averaged by year, the highest was 27.7 ppb, in 2024, below EPA’s legal limit of 60 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 5.5 ppb, in 2018.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.78ppm

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 0.78 ppm, in 2025, below EPA’s legal limit of 4.0 ppm. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.0 ppm, in 2016.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

9.1ppb

Highest yearly average, 2020 to 2023

2023, one sample: 4.8 ppb

Averaged by year, the highest was 9.1 ppb, in 2020, below EPA’s legal limit of 100 ppb. In 2023, the latest year on file, its one sample was 4.8 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 3.8 ppb, in 2014.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.4ppm

Highest sample; found in 6 of 6

2025, one sample: 0.035 ppm

The highest sample, in 2023, was 0.4 ppm, below EPA’s legal limit of 10 ppm. In 2025, the latest year on file, its one sample was 0.035 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.028 ppm, in 2015.

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 3 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 and arsenic results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Uranium comes from EPA’s file alone, which ends in 2019. Deer Butte Subdivision’s own annual report, which it must send you every year, has newer results for those and 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 Aug. 10, 2020 to Dec. 3, 2025; EPA’s compliance samples are from Nov. 1, 2017 to Nov. 1, 2017.

Testing your own tap

Deer Butte Subdivision’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 Deer Butte Subdivision serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Tarrant County Public Health Laboratory

    Fort Worth, TX · about 26 miles

    Certified for bacteria

    (817) 321-4758

  • Pace Analytical Services, LLC -Dallas TX

    Fort Worth, TX · about 31 miles

    Certified for bacteria

    (817) 616-5030

  • Eurofins Xenco, LLC -Dallas

    Dallas, TX · about 49 miles

    Certified for bacteria

    (281) 240-4200

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 TX1840037. Rebuilt from EPA data on Oct. 18, 2026.

Also in Parker County

All Texas utilities

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