Seven Hills Ranch

What EPA’s and Texas’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals, plus violations since 2016, with the certification that handles each result.

Serves: 414 people
Connections: 138
Water source: Groundwater influenced by surface water
Based in: Houston, TX
County: Comal
Owner: Private

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, not everything. No health-based violations on file since 2016.

What was found

Nitrate, total trihalomethanes (TTHM), haloacetic acids (HAA5), arsenic, chromium (total), fluoride and uranium: Texas’s own results, samples taken from March 23, 2026 to Sept. 8, 2026.

Below EPA’s limits3

Nitrate

Comes from the source

Below EPA’s limits

2.7ppm

Highest sample; found in 3 of 3

2026 average: 2.3 ppm

The highest sample, in 2026, was 2.7 ppm, below EPA’s legal limit of 10 ppm. That is the only year on file, and its three samples averaged 2.3 ppm.

What handles it

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

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

12.9ppb

Highest yearly average, 2026

Averaged by year, the highest was 12.9 ppb, in 2026, below EPA’s legal limit of 80 ppb. That is the only year on file.

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

2.4ppb

Highest yearly average, 2026

Averaged by year, the highest was 2.4 ppb, in 2026, below EPA’s legal limit of 60 ppb. That is the only year on file.

What handles it

No certification claim covers this compound yet.

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

Arsenic
Chromium (total)
Fluoride
Uranium

Violations since 2016

No health-based violations on file with EPA since 2016. There are 3 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

Everything else. Nitrate, total trihalomethanes (TTHM), haloacetic acids (HAA5), arsenic, chromium (total), fluoride and uranium results here are Texas’s own from 2026 on, with EPA’s national file for 2012 to 2019. Seven Hills Ranch’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 23, 2026 to Sept. 8, 2026.

Testing your own tap

Seven Hills Ranch’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.

No lab Texas certifies is within 75 miles of the area Seven Hills Ranch serves on the state’s list. Some take samples by mail; the state’s page lists them all.

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