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.
0
health-based violations
2
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MR | Monitoring | Resolved | 2025-12-30 |
| MR | Monitoring | Resolved | 2025-12-30 |
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 |
|---|---|---|---|---|
| Copper | 571.5 µg/L 44% of the EPA limit 1300 µg/L
worst single sample: 900 µg/L | 278/286 | SYR4 | 2012–2019 |
| Bromodichloromethane | 8.3 µg/L No EPA limit set
worst single sample: 10.2 µg/L | 265/265 | SYR4 | 2012–2019 |
| Chloroform | 16.66 µg/L No EPA limit set
worst single sample: 26.7 µg/L | 265/265 | SYR4 | 2012–2019 |
| TTHM | 28.81 µg/L 36% of the EPA limit 80 µg/L
worst single sample: 38.3 µg/L | 250/251 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 28.065 µg/L 47% of the EPA limit 60 µg/L
worst single sample: 39.9 µg/L | 250/250 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 18.66 µg/L No EPA limit set
worst single sample: 26.5 µg/L | 249/250 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 5.6 µg/L No EPA limit set
worst single sample: 6.6 µg/L | 240/250 | SYR4 | 2012–2019 |
| Dibromochloromethane | 4.2835 µg/L No EPA limit set
worst single sample: 6.1 µg/L | 232/265 | SYR4 | 2012–2019 |
| Lead | 4.36 µg/L 29% of the EPA limit 15 µg/L
worst single sample: 14 µg/L | 169/286 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 5.33 µg/L No EPA limit set
worst single sample: 13.6 µg/L | 128/250 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.215 µg/L No EPA limit set
worst single sample: 3.5 µg/L | 98/250 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 3.72 µg/L No EPA limit set
worst single sample: 4.6 µg/L | 77/250 | SYR4 | 2012–2019 |
| Nitrate | 2032 µg/L 20% of the EPA limit 10000 µg/L
worst single sample: 2080 µg/L | 64/64 | SYR4 | 2012–2019 |
| Bromoform | 11.6575 µg/L No EPA limit set
worst single sample: 12.7 µg/L | 16/265 | SYR4 | 2012–2019 |
| Fluoride | 673 µg/L 17% of the EPA limit 4000 µg/L
worst single sample: 700 µg/L | 16/16 | SYR4 | 2012–2019 |
| Barium | 41.75 µg/L 2.1% of the EPA limit 2000 µg/L
worst single sample: 43.5 µg/L | 15/15 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2025 |
| Atrazine | 0.3770 µg/L 13% of the EPA limit 3 µg/L
worst single sample: 0.3900 µg/L | 14/18 | SYR4 | 2012–2019 |
| Simazine | 0.3360 µg/L 8.4% of the EPA limit 4 µg/L
worst single sample: 0.3900 µg/L | 13/18 | SYR4 | 2012–2019 |
| Cyanide | 128.32 µg/L 64% of the EPA limit 200 µg/L
worst single sample: 153 µg/L | 9/12 | SYR4 | 2014–2019 |
| Chromium | 2.668 µg/L 2.7% of the EPA limit 100 µg/L
worst single sample: 3.16 µg/L | 9/15 | SYR4 | 2012–2019 |
| Arsenic | 3.902 µg/L 39% of the EPA limit 10 µg/L
worst single sample: 4.5 µg/L | 5/15 | SYR4 | 2012–2019 |
| Selenium | 2.341 µg/L 4.7% of the EPA limit 50 µg/L
worst single sample: 2.41 µg/L | 4/15 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 2012 µg/L 20% of the EPA limit 10000 µg/L
worst single sample: 2080 µg/L | 3/3 | SYR4 | 2012–2015 |
| Antimony, Total | 0.2485 µg/L 4.1% of the EPA limit 6 µg/L
worst single sample: 0.2500 µg/L | 2/15 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2017 |
| Nitrite | 210 µg/L 21% of the EPA limit 1000 µg/L | 1/6 | SYR4 | 2012–2015 |
| Thallium, Total | 0.0140 µg/L 0.7% of the EPA limit 2 µg/L | 1/15 | SYR4 | 2012–2019 |
77 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-PF3ONSAdonaAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about City of Lewisville
Is City of Lewisville tap water safe to drink?
EPA monitoring detected 32 contaminants in City of Lewisville'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 Lewisville's water?
EPA monitoring detected Copper, Bromodichloromethane, Chloroform, TTHM, 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 Lewisville serve?
City of Lewisville reports serving 140,880 people in Texas, per its EPA record.
Has City of Lewisville had any water quality violations?
The EPA has 2 violations on file for City of Lewisville, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 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.