Shirley 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: 3,054 people
Connections: 1,018
Water source: Groundwater
Based in: Sulphur Springs, TX
County: Hopkins
Owner: Local government

The 4 ZIP codes it serves

75420, 75440, 75482, 75497

The short answer

Nothing in EPA’s and Texas’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. No health-based violations on file since 2016.

What was found

Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, chromium (total), nitrate, arsenic and uranium: Texas’s own results, samples taken from July 15, 2020 to Sept. 14, 2026, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits5

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

59ppb

Highest yearly average, 2020 to 2026

2026 average: 49.3 ppb

Averaged by year, the highest was 59 ppb, in 2020, below EPA’s legal limit of 80 ppb. Its highest single sample was 66.1 ppb. In 2026, the latest year on file, its two samples averaged 49.3 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 57.9 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

12.7ppb

Highest yearly average, 2020 to 2026

2026 average: 11.2 ppb

Averaged by year, the highest was 12.7 ppb, in 2020, below EPA’s legal limit of 60 ppb. Its highest single sample was 14.9 ppb. In 2026, the latest year on file, its two samples averaged 11.2 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 21.1 ppb, in 2014.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.22ppm

Highest yearly average, 2020 to 2026

2026, one sample: 0.17 ppm

Averaged by year, the highest was 0.22 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.24 ppm. In 2026, the latest year on file, its one sample was 0.17 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.78 ppm, in 2017.

What handles it

NSF/ANSI 58 look for “Fluoride Reduction”
NSF/ANSI 53 look for “Fluoride”

Chromium (total)

Comes from the source

Below EPA’s limits

4.6ppb

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 4.6 ppb, in 2021, 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 0.34 ppb, in 2012.

What handles it

NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
NSF/ANSI 53 look for “Chromium Reduction”

Nitrate

Comes from the source

Below EPA’s limits

0.2ppm

Highest sample; found in 28 of 28

2026 average: 0.086 ppm

The highest sample, in 2020, was 0.2 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its four samples averaged 0.086 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.71 ppm, in 2017.

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
Lead
Uranium

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. Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, chromium (total), nitrate, arsenic and uranium results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Shirley 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 July 15, 2020 to Sept. 14, 2026.

Testing your own tap

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

Northeast Texas Public Health District Laboratory
Tyler, TX · about 49 miles
Certified for bacteria
(903) 535-0090
Environmental Monitoring Lab
Winona, TX · about 49 miles
Certified for bacteria
(903) 877-9222
Analytical Environmental Labs
Tyler, TX · about 57 miles
Certified for bacteria
(903) 509-8700

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