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.
68
health-based violations
92
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2023-09-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-09-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-09-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-09-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-09-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2016-04-01 → 2016-06-30 |
| MCL | Health-based | Resolved | 2016-04-01 → 2016-06-30 |
| MCL | Health-based | Resolved | 2016-04-01 → 2016-06-30 |
| MCL | Health-based | Resolved | 2016-04-01 → 2016-06-30 |
| MCL | Health-based | Resolved | 2016-04-01 → 2016-06-30 |
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 |
|---|---|---|---|---|
| Copper | 552.65 µg/L 43% of the EPA limit 1300 µg/L
worst single sample: 3200 µg/L | 428/478 | SYR4 | 2012–2019 |
| Chloroform | 70.785 µg/L No EPA limit set
worst single sample: 97 µg/L | 274/295 | SYR4 | 2012–2019 |
| Bromodichloromethane | 29.45 µg/L No EPA limit set
worst single sample: 42.3 µg/L | 271/295 | SYR4 | 2012–2019 |
| Dibromochloromethane | 9.9 µg/L No EPA limit set
worst single sample: 13 µg/L | 270/295 | SYR4 | 2012–2019 |
| TTHM | 91.9 µg/L 115% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 128 µg/L | 257/259 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 69.545 µg/L 116% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 127 µg/L | 254/257 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 38.335 µg/L No EPA limit set
worst single sample: 54.2 µg/L | 252/257 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 33.9 µg/L No EPA limit set
worst single sample: 63.3 µg/L | 251/257 | SYR4 | 2012–2019 |
| Lead | 13 µg/L 87% of the EPA limit 15 µg/L
worst single sample: 62.1 µg/L | 229/478 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 10.865 µg/L No EPA limit set
worst single sample: 13.5 µg/L | 148/257 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.925 µg/L No EPA limit set
worst single sample: 3.9 µg/L | 116/257 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 3.305 µg/L No EPA limit set
worst single sample: 33.4 µg/L | 50/257 | SYR4 | 2012–2019 |
| Nitrate | 320 µg/L 3.2% of the EPA limit 10000 µg/L
worst single sample: 378 µg/L | 46/134 | SYR4 | 2012–2019 |
| Bromoform | 1.588 µg/L No EPA limit set
worst single sample: 1.8 µg/L | 33/295 | SYR4 | 2012–2019 |
| Barium | 92.2 µg/L 4.6% of the EPA limit 2000 µg/L
worst single sample: 170 µg/L | 27/27 | SYR4 | 2012–2019 |
| Fluoride | 641.75 µg/L 16% of the EPA limit 4000 µg/L
worst single sample: 760 µg/L | 24/27 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 18/18 | LCR | 2023 |
| Di(2-ethylhexyl) Phthalate | 1.6895 µg/L 28% of the EPA limit 6 µg/L
worst single sample: 1.7 µg/L | 8/44 | SYR4 | 2012–2019 |
| Chromium | 1.007 µg/L 1% of the EPA limit 100 µg/L
worst single sample: 1.1 µg/L | 7/27 | SYR4 | 2012–2019 |
| Arsenic | 1.568 µg/L 16% of the EPA limit 10 µg/L
worst single sample: 1.61 µg/L | 5/27 | SYR4 | 2012–2019 |
| Cyanide | 133.865 µg/L 67% of the EPA limit 200 µg/L
worst single sample: 152 µg/L | 4/23 | SYR4 | 2014–2019 |
| Gross Beta Particle Activity | 5.95 pCi/L No EPA limit set
worst single sample: 6.1 pCi/L | 4/7 | SYR4 | 2014–2017 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 3/3 | SYR4 | 2017 |
| Selenium | 1.49 µg/L 3% of the EPA limit 50 µg/L
worst single sample: 1.5 µg/L | 3/27 | SYR4 | 2012–2019 |
| Antimony, Total | 0.2695 µg/L 4.5% of the EPA limit 6 µg/L
worst single sample: 0.2700 µg/L | 2/27 | SYR4 | 2012–2019 |
| Atrazine | 0.1095 µg/L 3.7% of the EPA limit 3 µg/L
worst single sample: 0.1100 µg/L | 2/44 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 271.65 µg/L 2.7% of the EPA limit 10000 µg/L
worst single sample: 282 µg/L | 2/17 | SYR4 | 2012–2017 |
| Benzo(A)Pyrene | 0.0300 µg/L 15% of the EPA limit 0.2000 µg/L | 1/44 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon And U | 3.3 pCi/L 22% of the EPA limit 15 pCi/L | 1/7 | SYR4 | 2014–2017 |
| Thallium, Total | 0.0070 µg/L 0.4% of the EPA limit 2 µg/L | 1/27 | SYR4 | 2012–2019 |
| Lithium | 20 µg/L No EPA limit set | 1/8 | UCMR-5 | 2023 |
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-GammaBenzeneBeryllium, TotalBromateChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about City of Tyler
Is City of Tyler tap water safe to drink?
EPA monitoring detected 33 contaminants in City of Tyler'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 Tyler's water?
EPA monitoring detected Copper, Chloroform, Bromodichloromethane, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.
How many people does City of Tyler serve?
City of Tyler reports serving 107,000 people in Texas, per its EPA record.
Has City of Tyler had any water quality violations?
The EPA has 92 violations on file for City of Tyler, of which 68 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.