Blackjack 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: 1,218 people
Connections: 406
Water source: Groundwater
Based in: Troup, TX
County: Cherokee
Owner: Local government

The ZIP code it serves

75789

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. 1 health-based violation since 2016.

What was found

Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, nitrate, arsenic, chromium (total) and uranium: Texas’s own results, samples taken from March 9, 2020 to June 23, 2026, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits4

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

61.7ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 61.7 ppb, in 2026, below EPA’s legal limit of 80 ppb. Its highest single sample was 71.7 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 82.7 ppb, in 2012, and EPA recorded violations in 2012 and 2013.

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

22.8ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 22.8 ppb, in 2026, below EPA’s legal limit of 60 ppb. Its highest single sample was 29.3 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 49.5 ppb, in 2012.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.94ppm

Highest yearly average, 2021 to 2024

2024 average: 0.91 ppm

Averaged by year, the highest was 0.94 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 1.3 ppm. In 2024, the latest year on file, its two samples averaged 0.91 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.1 ppm, in 2015.

What handles it

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

Nitrate

Comes from the source

Below EPA’s limits

0.14ppm

Highest sample; found in 13 of 14

2026 average: 0.059 ppm

The highest sample, in 2024, was 0.14 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its two samples averaged 0.059 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.17 ppm, in 2017.

What handles it

NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

Arsenic
Chromium (total)
Lead
Uranium

Violations 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
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 12 monitoring or reporting violations not shown.

What this report can’t tell you

Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, nitrate, arsenic, chromium (total) and uranium results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Blackjack 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 March 9, 2020 to June 23, 2026.

Testing your own tap

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

Analytical Environmental Labs
Tyler, TX · about 16 miles
Certified for bacteria
(903) 509-8700
Northeast Texas Public Health District Laboratory
Tyler, TX · about 22 miles
Certified for bacteria
(903) 535-0090
Southern Petroleum Laboratories (SPL), Inc. (FKA Ana-Lab Corporation)
Kilgore, TX · about 23 miles
Certified for bacteria, lead and copper
(903) 984-0551

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