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Hackberry Creek 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
176 people
Connections
60
Water source
Groundwater
Based in
Austin, TX
County
Chambers
Owner
Private
The ZIP code it serves

77523

The short answer

1 result is above EPA’s legal limit. The worst: Arsenic, above the legal limit. 7 health-based violations since 2016.

What handles it

What was found

Arsenic, total trihalomethanes (TTHM), fluoride, haloacetic acids (HAA5), chromium (total), nitrate and uranium: Texas’s own results, samples taken from Feb. 27, 2020 to Aug. 5, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Arsenic

Comes from the source

Above the legal limit

10.7ppb

Highest yearly average, 2020 to 2026

2026 average: 2.3 ppb

Averaged by year, the highest was 10.7 ppb, in 2022, above EPA’s legal limit of 10 ppb. Its highest single sample was 17.5 ppb. In 2026, the latest year on file, its three samples averaged 2.3 ppb. EPA recorded violations for arsenic at this utility in 2020, 2022 and 2023. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 41.4 ppb, in 2012, and EPA recorded violations in 2012, 2013, 2015, 2016 and 2019.

What handles it

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

Below EPA’s limits3

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

70.4ppb

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 70.4 ppb, in 2025, 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 74.1 ppb, in 2019.

What handles it

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

Fluoride

Forms or is added in treatment

Below EPA’s limits

2.4ppm

Highest yearly average, 2022 to 2025

2025, one sample: 2.3 ppm

Averaged by year, the highest was 2.4 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 2.3 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.4 ppm, in 2013.

What handles it

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

15.7ppb

Highest yearly average, 2022 to 2025

2025, one sample: 10.3 ppb

Averaged by year, the highest was 15.7 ppb, in 2022, below EPA’s legal limit of 60 ppb. In 2025, the latest year on file, its one sample was 10.3 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 10.7 ppb, in 2019.

What handles it

No certification claim covers this compound yet.

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Chromium (total)
  • Lead
  • Nitrate
  • 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: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

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

  • NSF/ANSI 58

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

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

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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The best reverse osmosis systems, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2023 to March 31, 20230.011 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2022 to Dec. 31, 20220.011 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2022 to Sept. 30, 20220.012 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2020 to March 31, 20200.012 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2019 to Dec. 31, 20190.011 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2016 to June 30, 20160.014 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2016 to March 31, 20160.015 MG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 3 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Arsenic, total trihalomethanes (TTHM), fluoride, haloacetic acids (HAA5), chromium (total), nitrate and uranium results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Hackberry Creek Subdivision’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. 27, 2020 to Aug. 5, 2026.

Testing your own tap

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

  • A & B Environmental Services, Inc.

    Houston, TX · about 24 miles

    Certified for bacteria, lead and copper

    (713) 453-6060

  • City of Houston Health Department, Bureau of Laboratory Services

    Houston, TX · about 33 miles

    Certified for bacteria

    (832) 393-3939

  • Water Utility Services, Inc.

    Spring, TX · about 41 miles

    Certified for bacteria

    (281) 290-0704

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 TX0360100. Rebuilt from EPA data on Oct. 18, 2026.

Also in Chambers County

All Texas utilities

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