Rio Brazos 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
- 657 people
- Connections
- 219
- Water source
- Groundwater
- Based in
- Weatherford, TX
- County
- Parker
- Owner
- Local government
The ZIP code it serves
The short answer
1 result is above the health goal. The worst: Uranium, above the health goal. 2 health-based violations since 2016.
What handles itWhat was found
Uranium, total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride, chromium (total) and arsenic: Texas’s own results, samples taken from Aug. 3, 2020 to Sept. 1, 2026, with EPA’s 2012 to 2019 file for earlier years.
Above the health goal1
Uranium
Comes from the source
1.4ppb
Highest yearly average, 2021 to 2024
2024 average: 1.3 ppb
Averaged by year, the highest was 1.4 ppb, in 2021: below EPA’s legal limit of 30 ppb, but above its health goal of zero. Its highest single sample was 2.6 ppb. In 2024, the latest year on file, its two samples averaged 1.3 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.4 ppb, in 2015.
What handles it
- NSF/ANSI 58 look for “Uranium”
Below EPA’s limits5
Total trihalomethanes (TTHM)
Forms or is added in treatment
67.8ppb
Highest yearly average, 2020 to 2026
2026 average: 43.4 ppb
Averaged by year, the highest was 67.8 ppb, in 2024, below EPA’s legal limit of 80 ppb. Its highest single sample was 107 ppb. In 2026, the latest year on file, its six samples averaged 43.4 ppb. EPA recorded no violation for total trihalomethanes (TTHM) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 62.2 ppb, in 2018.
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
19.4ppb
Highest yearly average, 2020 to 2026
2026 average: 15.3 ppb
Averaged by year, the highest was 19.4 ppb, in 2024, below EPA’s legal limit of 60 ppb. Its highest single sample was 27.1 ppb. In 2026, the latest year on file, its six samples averaged 15.3 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 19.6 ppb, in 2018.
What handles it
No certification claim covers this compound yet.
Nitrate
Comes from the source
0.46ppm
Highest sample; found in 14 of 14
2026 average: 0.26 ppm
The highest sample, in 2021, was 0.46 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its two samples averaged 0.26 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.55 ppm, in 2019.
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
0.082ppm
Highest yearly average, 2021 to 2024
2024 average: 0.076 ppm
Averaged by year, the highest was 0.082 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.15 ppm. In 2024, the latest year on file, its two samples averaged 0.076 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.29 ppm, in 2015.
What handles it
- NSF/ANSI 58 look for “Fluoride Reduction”
- NSF/ANSI 53 look for “Fluoride”
Chromium (total)
Comes from the source
0.65ppb
Highest yearly average, 2021 to 2024
2024: not found
Averaged by year, the highest was 0.65 ppb, in 2021, below EPA’s legal limit of 100 ppb. Its highest single sample was 1.3 ppb. In 2024, 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 1.8 ppb, in 2015.
What handles it
- NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
- NSF/ANSI 53 look for “Chromium Reduction”
2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- 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 58
Claim: Uranium
For: 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
None of the filters TapBuff has checked so far carry these claims. Search the certifier listings for the claim above.
Compare five-year costsViolations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Lead and Copper Rule Revisions | The required inventory of lead service lines was not completed or submitted on time.EPA: LSL Inventory | Oct. 17, 2024 | — | Resolved |
| Revised Total Coliform Rule | Coliform results required a check of the system, and the check or its fixes were not done on time.EPA: Treatment Technique, Level 1 Assessment (RTCR) | Oct. 22, 2022 | — | Resolved |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 28 monitoring or reporting violations not shown. | ||||
What this report can’t tell you
Everything else. Uranium, total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride, chromium (total) and arsenic results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Rio Brazos 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 Aug. 3, 2020 to Sept. 1, 2026.
Testing your own tap
The 3 labs Texas certifies closest to the area Rio Brazos WSC serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Tarrant County Public Health Laboratory
Fort Worth, TX · about 27 miles
Certified for bacteria
Pace Analytical Services, LLC -Dallas TX
Fort Worth, TX · about 35 miles
Certified for bacteria
Texas Institute for Applied Environmental Research (TIAER)
Stephenville, TX · about 37 miles
Certified for bacteria
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 TexasSources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- Texas Commission on Environmental Quality, Texas Drinking Water Viewer, results from Jan. 7, 2020 to Oct. 6, 2026, read Oct. 16, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: TCEQ, drinking water laboratories approved for public water system samples, read Oct. 10, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID TX1840004. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Read up on UraniumWhat each one does to health, where it comes from, and the certification claim that addresses it.About Uranium
- Get the utility’s own reportRio Brazos WSC must send you a water quality report every year. It covers contaminants this page does not show.How to read it
- Test your own tap for leadYour service line, solder and fixtures decide the lead at your faucet, not the utility’s average.Lead in your water: what to do
- Compare certified filtersWhat the filters certified for these results cost over five years, cartridges included.Compare five-year costs