Skip to content
TapBuff
ZIP

Birome WSC

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
2,018 people
Connections
629
Water source
Groundwater
Based in
Mount Calm, TX
County
Hill
Owner
Local government
The 3 ZIP codes it serves

76624, 76673, 76676

The short answer

1 result is above EPA’s legal limit. The worst: Arsenic, above the legal limit. 9 health-based violations since 2016.

What handles it

What was found

Arsenic, fluoride, total trihalomethanes (TTHM), haloacetic acids (HAA5), chromium (total), nitrate and uranium: Texas’s own results, samples taken from Feb. 4, 2020 to July 20, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Arsenic

Comes from the source

Above the legal limit

9.9ppb

Highest yearly average, 2020 to 2026

2026 average: 8.7 ppb

Averaged by year, the highest was 9.9 ppb, in 2025: below EPA’s legal limit of 10 ppb, but above its health goal of zero. Its highest single sample was 10.9 ppb. In 2026, the latest year on file, its two samples averaged 8.7 ppb. EPA judges this limit at each sampling point, and recorded a violation for arsenic at this utility in 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 12.2 ppb, in 2015, and EPA recorded violations in 2012, 2013, 2014, 2015, 2016, 2017 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 limits5

Fluoride

Forms or is added in treatment

Below EPA’s limits

2.2ppm

Highest yearly average, 2021 to 2024

2024, one sample: 2.1 ppm

Averaged by year, the highest was 2.2 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. In 2024, the latest year on file, its one sample was 2.1 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.3 ppm, in 2012.

What handles it

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

26.4ppb

Highest yearly average, 2020 to 2026

2026, one sample: 14.2 ppb

Averaged by year, the highest was 26.4 ppb, in 2024, below EPA’s legal limit of 80 ppb. In 2026, the latest year on file, its one sample was 14.2 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 28 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, one sample: 2.7 ppb

Averaged by year, the highest was 9.9 ppb, in 2025, below EPA’s legal limit of 60 ppb. In 2026, the latest year on file, its one sample was 2.7 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 9.4 ppb, in 2017.

What handles it

No certification claim covers this compound yet.

Chromium (total)

Comes from the source

Below EPA’s limits

9.1ppb

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 9.1 ppb, in 2024, below EPA’s legal limit of 100 ppb. In 2026, 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 3.6 ppb, in 2019.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.13ppm

Highest sample; found in 7 of 7

2026, one sample: 0.056 ppm

The highest sample, in 2024, was 0.13 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its one sample was 0.056 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.18 ppm, in 2018.

What handles it

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

Compare five-year costs

The best reverse osmosis systems, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Lead and Copper Rule RevisionsThe required inventory of lead service lines was not completed or submitted on time.EPA: LSL InventoryOct. 17, 2024—Resolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2020 to March 31, 20200.011 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, 2017 to June 30, 20170.011 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2017 to March 31, 20170.011 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2016 to Dec. 31, 20160.011 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2016 to Sept. 30, 20160.011 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2016 to June 30, 20160.011 MG/LResolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2016 to March 31, 20160.012 MG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 25 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Arsenic, fluoride, total trihalomethanes (TTHM), 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. Birome WSC’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. 4, 2020 to July 20, 2026.

Testing your own tap

Birome WSC’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 Birome WSC 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 10 miles

    Certified for bacteria, lead and copper

    (254) 829-8001

  • Environmental Monitoring Lab

    Hillsboro, TX · about 22 miles

    Certified for bacteria

    (254) 582-2622

  • Tarrant County Public Health Laboratory

    Fort Worth, TX · about 71 miles

    Certified for bacteria

    (817) 321-4758

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 TX1090017. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Hill County

All Texas utilities

What to do next