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Lakeside Water Supply 1

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
132 people
Connections
45
Water source
Groundwater
Based in
Colmesneil, TX
County
Tyler
Owner
Private
The ZIP code it serves

75938

The short answer

1 result is above EPA’s legal limit. The worst: Copper, above the action level. 3 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2017 to 2022.

Total trihalomethanes (TTHM), nitrate, arsenic, chromium (total), fluoride and haloacetic acids (HAA5): Texas’s own results, samples taken from June 9, 2020 to June 25, 2025, with EPA’s 2012 to 2019 file for earlier years.

Uranium: EPA’s compliance monitoring file, samples taken from May 24, 2018 to May 24, 2018. Newer results are in the utility’s annual water quality report.

Above the legal limit1

Copper

Comes from pipes, often your own

Above the action level

1.4ppm

90th percentile, 2022

In the latest period, 9 in 10 homes sampled were at or below 1.4 ppm, above EPA’s action level of 1.3 ppm.

What handles it

Below EPA’s limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

3.8ppb

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 3.8 ppb, in 2025, below EPA’s legal limit of 80 ppb. That was also the latest year on file.

What handles it

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

Nitrate

Comes from the source

Below EPA’s limits

0.46ppm

Highest sample; found in 3 of 3

2022, one sample: 0.43 ppm

The highest sample, in 2020, was 0.46 ppm, below EPA’s legal limit of 10 ppm. In 2022, the latest year on file, its one sample was 0.43 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.55 ppm, in 2012.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
6 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Fluoride
  • Haloacetic acids (HAA5)
  • 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.”

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

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—Addressed
Lead and Copper RuleOCCT/SOWT Treatment Installation/DemonstrationOct. 1, 2024—Unaddressed
Lead and Copper RuleOCCT/SOWT Treatment Installation/DemonstrationJuly 25, 2019—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 144 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), nitrate, arsenic, chromium (total), fluoride and haloacetic acids (HAA5) 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. Lakeside Water Supply 1’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 June 9, 2020 to June 25, 2025; EPA’s compliance samples are from May 24, 2018 to May 24, 2018.

Testing your own tap

Lakeside Water Supply 1’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 Lakeside Water Supply 1 serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Eastex Environmental Lab, Inc.-Nacogdoches

    Nacogdoches, TX · about 44 miles

    Certified for bacteria

    (936) 569-8879

  • Eastex Environmental Lab, Inc. -Coldspring

    Coldspring, TX · about 52 miles

    Certified for bacteria, lead and copper

    (936) 653-3249

  • Chaparral Laboratories, Inc.

    Huntsville, TX · about 72 miles

    Certified for bacteria, lead and copper

    (936) 291-1881

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 TX2290021. Rebuilt from EPA data on Oct. 18, 2026.

Also in Tyler County

All Texas utilities

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