Is Thompson Heights Water Tap Water Safe? Quality Report

Water source: SWP
Ownership: Private
Counties served: Grayson

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

health-based violations

122

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2013-11-01 → 2013-11-30
MCL	Health-based	Resolved	2013-11-01 → 2013-11-30
MCL	Health-based	Resolved	2013-11-01 → 2013-11-30
MCL	Health-based	Resolved	2013-11-01 → 2013-11-30
MCL	Health-based	Resolved	2009-10-01 → 2009-12-31
MCL	Health-based	Resolved	2009-10-01 → 2009-12-31
MCL	Health-based	Resolved	2009-10-01 → 2009-12-31
MCL	Health-based	Resolved	2009-10-01 → 2009-12-31
MCL	Health-based	Resolved	2009-07-01 → 2009-09-30
MCL	Health-based	Resolved	2009-07-01 → 2009-09-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	22.5 µg/L No EPA limit set worst single sample: 25.6 µg/L	45/45	SYR4	2012–2019
Chloroform	59.08 µg/L No EPA limit set worst single sample: 60.7 µg/L	45/45	SYR4	2012–2019
Dichloroacetic Acid	27.32 µg/L No EPA limit set worst single sample: 29.1 µg/L	45/45	SYR4	2012–2019
TTHM	89.64 µg/L 112% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 121.1 µg/L	45/45	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	44.46 µg/L 74% of the EPA limit 60 µg/L worst single sample: 55 µg/L	45/45	SYR4	2012–2019
Dibromochloromethane	36 µg/L No EPA limit set worst single sample: 51.9 µg/L	41/45	SYR4	2012–2019
Trichloroacetic Acid	17.43 µg/L No EPA limit set worst single sample: 18.8 µg/L	39/45	SYR4	2012–2019
Dibromoacetic Acid	14.9 µg/L No EPA limit set worst single sample: 18.5 µg/L	31/45	SYR4	2012–2019
Monobromoacetic Acid	9.35 µg/L No EPA limit set worst single sample: 10.1 µg/L	31/45	SYR4	2012–2019
Bromoform	29.57 µg/L No EPA limit set worst single sample: 36.5 µg/L	23/45	SYR4	2012–2019
Monochloroacetic Acid	5.31 µg/L No EPA limit set worst single sample: 6.3 µg/L	19/45	SYR4	2012–2019
Lead	0.0021 mg/L 14% of the EPA limit 0.0150 mg/L	7/7	LCR	2025
Copper	318 µg/L 24% of the EPA limit 1300 µg/L worst single sample: 350 µg/L	5/5	SYR4	2014
Lead	2.4 µg/L 16% of the EPA limit 15 µg/L worst single sample: 2.5 µg/L	5/5	SYR4	2014

Utility contact

Contact: MUNSON, JOHN
Phone: 903-463-2300
Email: OFFICE@JMRECOMMERCIAL.COM

Frequently asked questions about Thompson Heights Water

Is Thompson Heights Water tap water safe to drink?

EPA monitoring detected 14 contaminants in Thompson Heights Water's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Thompson Heights Water's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Thompson Heights Water serve?

Thompson Heights Water reports serving 414 people in Texas, per its EPA record.

Has Thompson Heights Water had any water quality violations?

The EPA has 122 violations on file for Thompson Heights Water, of which 18 are health-based (a contaminant limit or required treatment was breached) and 3 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.