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Cimarron Park Water

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
2,079 people
Connections
693
Water source
Groundwater
Based in
Buda, TX
County
Hays
Owner
Private
The ZIP code it serves

78610

The short answer

2 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 1993 to 2023.

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

Above the health goal2

Lead

Comes from pipes, often your own

Above the health goal

3.3ppb

90th percentile, 2023

In the latest period, 9 in 10 homes sampled were at or below 3.3 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

Uranium

Comes from the source

Above the health goal

0.55ppb

Highest yearly average, 2021

Averaged by year, the highest was 0.55 ppb, in 2021: below EPA’s legal limit of 30 ppb, but above its health goal of zero. Its highest single sample was 1.1 ppb. That is the only year on file.

What handles it

Below EPA’s limits4

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

20.3ppb

Highest yearly average, 2020 to 2026

2026, one sample: 13.9 ppb

Averaged by year, the highest was 20.3 ppb, in 2021, below EPA’s legal limit of 80 ppb. In 2026, the latest year on file, its one sample was 13.9 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 17.1 ppb, in 2019.

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

1.9ppm

Highest sample; found in 14 of 14

2026 average: 1.4 ppm

The highest sample, in 2021, was 1.9 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its two samples averaged 1.4 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 1.8 ppm, in 2017.

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

0.33ppm

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 0.33 ppm, in 2020, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.44 ppm. In 2026, the latest year on file, it wasn’t found in any of its two samples. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.35 ppm, in 2014.

What handles it

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

4.4ppb

Highest yearly average, 2020 to 2026

2026, one sample: 3.8 ppb

Averaged by year, the highest was 4.4 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2026, the latest year on file, its one sample was 3.8 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 4.1 ppb, in 2019.

What handles it

No certification claim covers this compound yet.

2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)

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

The best water filters for lead, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There is 1 monitoring or reporting violation: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Uranium, total trihalomethanes (TTHM), nitrate, fluoride, haloacetic acids (HAA5), arsenic and chromium (total) results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Cimarron Park Water’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 May 5, 2020 to May 27, 2026.

Testing your own tap

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

  • Aqua-Tech Laboratories, Inc.

    Austin, TX · about 10 miles

    Certified for bacteria, lead and copper

    (512) 301-9559

  • Edwards Aquifer Research & Data Center, Texas State University

    San Marcos, TX · about 16 miles

    Certified for bacteria

    (512) 245-2329

  • Texas Department of State Health Services Laboratory Services Section

    Austin, TX · about 18 miles

    Certified for bacteria, lead and copper

    (512) 458-7318

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 TX1050059. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Hays County

All Texas utilities

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