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Snug Harbor 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
135 people
Connections
45
Water source
Groundwater
Based in
Cypress, TX
County
Brazoria
Owner
Private
The ZIP code it serves

77577

The short answer

1 result is above EPA’s legal limit, and 1 more is above the health goal. The worst: Total trihalomethanes (TTHM), above the legal limit. 3 health-based violations since 2016.

What handles it

What was found

Total trihalomethanes (TTHM), uranium, haloacetic acids (HAA5), fluoride, nitrate, arsenic and chromium (total): Texas’s own results, samples taken from Feb. 5, 2020 to Sept. 3, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Total trihalomethanes (TTHM)

Forms or is added in treatment

Above the legal limit

184ppb

Highest yearly average, 2022 to 2026

2026 average: 112 ppb

Averaged by year, the highest was 184 ppb, in 2025, about 2.3 times EPA’s legal limit of 80 ppb. Its highest single sample was 203 ppb. In 2026, the latest year on file, its three samples averaged 112 ppb, above the limit. EPA recorded violations for total trihalomethanes (TTHM) at this utility in 2025 and 2026. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 65.5 ppb, in 2016.

What handles it

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

Above the health goal1

Uranium

Comes from the source

Above the health goal

7.1ppb

Highest yearly average, 2021

Averaged by year, the highest was 7.1 ppb, in 2021: below EPA’s legal limit of 30 ppb, but above its health goal of zero. That is the only year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.3 ppb, in 2015.

What handles it

Below EPA’s limits3

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

57.8ppb

Highest yearly average, 2022 to 2026

2026 average: 40.8 ppb

Averaged by year, the highest was 57.8 ppb, in 2025, below EPA’s legal limit of 60 ppb. Its highest single sample was 59.5 ppb. In 2026, the latest year on file, its three samples averaged 40.8 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 13.9 ppb, in 2019.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.51ppm

Highest yearly average, 2022 to 2025

2025, one sample: 0.51 ppm

Averaged by year, the highest was 0.51 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 0.51 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.1 ppm, in 2016.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.32ppm

Highest sample; found in 4 of 7

2026: not found

The highest sample, in 2021, was 0.32 ppm, below EPA’s legal limit of 10 ppm. 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 sample of 0.26 ppm, in 2016.

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
  • Chromium (total)
  • Lead

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: Trihalomethanes (TTHM) Reduction

    For: Total trihalomethanes (TTHM)

    Other certifiers’ wording: VOC Reduction

  • NSF/ANSI 58

    Claims: Trihalomethanes (TTHM) Reduction, Uranium

    For: Total trihalomethanes (TTHM), Uranium

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

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2026 to June 30, 20260.14 MG/LArchived
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2026 to March 31, 20260.1 MG/LArchived
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2025 to Dec. 31, 20250.092 MG/LArchived
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 5 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), uranium, haloacetic acids (HAA5), fluoride, nitrate, arsenic and chromium (total) results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Snug Harbor 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. 5, 2020 to Sept. 3, 2026.

Testing your own tap

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

  • Brazoria County Health Department Water Laboratory

    Angleton, TX · about 13 miles

    Certified for bacteria

    (979) 864-1628

  • Eurofins Xenco, LLC -Houston

    Stafford, TX · about 29 miles

    Certified for lead and copper

    (281) 240-4200

  • City of Houston Health Department, Bureau of Laboratory Services

    Houston, TX · about 30 miles

    Certified for bacteria

    (832) 393-3939

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 TX0200053. Rebuilt from EPA data on Oct. 18, 2026.

Also in Brazoria County

All Texas utilities

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