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.
6
health-based violations
23
violations on file
1
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2010-09-01 → 2010-09-30 |
| MCL | Health-based | Resolved | 2010-09-01 → 2010-09-30 |
| MCL | Health-based | Resolved | 2010-09-01 → 2010-09-30 |
| MCL | Health-based | Resolved | 2010-09-01 → 2010-09-30 |
| MCL | Health-based | Archived | 1992-06-01 → 1992-06-30 |
| MCL | Health-based | Archived | 1991-06-01 → 1991-06-30 |
| RPT | Monitoring | Unaddressed | 2025-07-02 |
| MR | Monitoring | Resolved | 2024-12-30 |
| MR | Monitoring | Resolved | 2024-12-30 |
| MR | Monitoring | Resolved | 2013-04-01 → 2013-06-30 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
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 |
|---|---|---|---|---|
| Dibromochloromethane | 8.455 µg/L No EPA limit set
worst single sample: 10.5 µg/L | 144/161 | SYR4 | 2012–2019 |
| Bromodichloromethane | 10.68 µg/L No EPA limit set
worst single sample: 14 µg/L | 143/161 | SYR4 | 2012–2019 |
| Chloroform | 10.19 µg/L No EPA limit set
worst single sample: 24.7 µg/L | 143/161 | SYR4 | 2012–2019 |
| Bromoform | 4.355 µg/L No EPA limit set
worst single sample: 6.2 µg/L | 130/161 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 12.215 µg/L 20% of the EPA limit 60 µg/L
worst single sample: 26.8 µg/L | 128/128 | SYR4 | 2012–2019 |
| TTHM | 31.6 µg/L 40% of the EPA limit 80 µg/L
worst single sample: 47.5 µg/L | 125/128 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 6.725 µg/L No EPA limit set
worst single sample: 11.3 µg/L | 120/128 | SYR4 | 2012–2019 |
| Copper | 650 µg/L 50% of the EPA limit 1300 µg/L
worst single sample: 780 µg/L | 100/100 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 3.53 µg/L No EPA limit set
worst single sample: 5.9 µg/L | 78/128 | SYR4 | 2012–2019 |
| Nitrate | 554 µg/L 5.5% of the EPA limit 10000 µg/L
worst single sample: 568 µg/L | 60/80 | SYR4 | 2012–2019 |
| Lead | 9.24 µg/L 62% of the EPA limit 15 µg/L
worst single sample: 44 µg/L | 57/100 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 3.35 µg/L No EPA limit set
worst single sample: 5.8 µg/L | 51/128 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 4.7 µg/L No EPA limit set
worst single sample: 15.9 µg/L | 42/128 | SYR4 | 2012–2019 |
| Atrazine | 0.2685 µg/L 9% of the EPA limit 3 µg/L
worst single sample: 0.3300 µg/L | 22/43 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 2.675 µg/L No EPA limit set
worst single sample: 4.8 µg/L | 18/128 | SYR4 | 2012–2019 |
| Lead | 0.0026 mg/L 17% of the EPA limit 0.0150 mg/L | 16/16 | LCR | 2024 |
| Barium | 68.6 µg/L 3.4% of the EPA limit 2000 µg/L
worst single sample: 77 µg/L | 15/15 | SYR4 | 2016–2019 |
| Chromium | 2.84 µg/L 2.8% of the EPA limit 100 µg/L
worst single sample: 2.9 µg/L | 13/15 | SYR4 | 2016–2019 |
| Fluoride | 671.9 µg/L 17% of the EPA limit 4000 µg/L
worst single sample: 680 µg/L | 10/10 | SYR4 | 2014–2017 |
| Simazine | 0.1060 µg/L 2.7% of the EPA limit 4 µg/L
worst single sample: 0.1100 µg/L | 9/43 | SYR4 | 2012–2019 |
| Lithium | 45.2 µg/L No EPA limit set | 9/14 | UCMR-5 | 2024 |
| Cyanide | 47.08 µg/L 24% of the EPA limit 200 µg/L
worst single sample: 47.8 µg/L | 7/10 | SYR4 | 2014–2017 |
| Nitrate-Nitrite | 445 µg/L 4.5% of the EPA limit 10000 µg/L
worst single sample: 446 µg/L | 5/8 | SYR4 | 2012–2013 |
| Di(2-ethylhexyl) Phthalate | 6.81 µg/L 114% of the EPA limit, at the 95th percentile of samples — 6 µg/L
worst single sample: 7.5 µg/L | 3/43 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 4.795 pCi/L No EPA limit set
worst single sample: 4.8 pCi/L | 2/5 | SYR4 | 2017 |
| Antimony, Total | 0.2100 µg/L 3.5% of the EPA limit 6 µg/L | 1/15 | SYR4 | 2016–2019 |
| Ethylbenzene | 1.14 µg/L 0.2% of the EPA limit 700 µg/L | 1/33 | SYR4 | 2014–2019 |
| Xylenes, Total | 10.6 µg/L 0.1% of the EPA limit 10000 µg/L | 1/33 | SYR4 | 2014–2019 |
75 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about City of Highland Village
Is City of Highland Village tap water safe to drink?
EPA monitoring detected 33 contaminants in City of Highland Village'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 City of Highland Village's water?
EPA monitoring detected Dibromochloromethane, Bromodichloromethane, Chloroform, Bromoform, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does City of Highland Village serve?
City of Highland Village reports serving 16,500 people in Texas, per its EPA record.
Has City of Highland Village had any water quality violations?
The EPA has 23 violations on file for City of Highland Village, of which 6 are health-based (a contaminant limit or required treatment was breached) and 1 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.