What was found in Tyler's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Copper | 552.65 µg/L 43% of the EPA limit 1300 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 929 µg/L — SOUTHERN UTILITIES · 69,735 people · 2018 | 8/8 | SYR4 |
| Fluoride | 641.75 µg/L 16% of the EPA limit 4000 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 880.4 µg/L — JACKSON WSC · 5,532 people · 2019 | 7/8 | SYR4 |
| Nitrate | 320 µg/L 3.2% of the EPA limit 10000 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 827 µg/L — HEIGHTS WATER · 306 people · 2019 | 7/8 | SYR4 |
| Nitrate-Nitrite | 271.65 µg/L 2.7% of the EPA limit 10000 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2017 | 7/8 | SYR4 |
| Xylenes, Total | 134.283 µg/L 1.3% of the EPA limit 10000 µg/L Highest in the city: DEAN WSC · 5,907 people · 2019 | 3/8 | SYR4 |
| Cyanide | 133.865 µg/L 67% of the EPA limit 200 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 3/8 | SYR4 |
| TTHM | 91.9 µg/L 115% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 122.3 µg/L — JACKSON WSC · 5,532 people · 2019 | 8/8 | SYR4 |
| Barium | 92.2 µg/L 4.6% of the EPA limit 2000 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 7/8 | SYR4 |
| Chloroform | 70.785 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019 | 8/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 69.545 µg/L 116% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 8/8 | SYR4 |
| Monochloroacetic Acid | 10.865 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 46.6 µg/L — EAST TEXAS MUD OF SMITH COUNTY · 2,706 people · 2019 | 6/8 | SYR4 |
| Dichloroacetic Acid | 38.335 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019 | 8/8 | SYR4 |
| Bromodichloromethane | 29.45 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 34.36 µg/L — JACKSON WSC · 5,532 people · 2019 | 8/8 | SYR4 |
| Trichloroacetic Acid | 33.9 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019 | 7/8 | SYR4 |
| Lead | 13 µg/L 87% of the EPA limit 15 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 32.145 µg/L — JACKSON WSC · 5,532 people · 2018 | 8/8 | SYR4 |
| Lithium | 20 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2023 | 2/8 | UCMR-5 |
| Dibromochloromethane | 9.9 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 16.35 µg/L — JACKSON WSC · 5,532 people · 2019 | 8/8 | SYR4 |
| Ethylbenzene | 13 µg/L 1.9% of the EPA limit 700 µg/L Highest in the city: DEAN WSC · 5,907 people · 2019 | 2/8 | SYR4 |
| Nitrite | 12.9 µg/L 1.3% of the EPA limit 1000 µg/L Highest in the city: BIG EDDY · 2,709 people · 2019 | 1/8 | SYR4 |
| Monobromoacetic Acid | 3.305 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 7.93 µg/L — SOUTHERN UTILITIES · 69,735 people · 2019 | 3/8 | SYR4 |
| Gross Beta Particle Activity | 5.95 pCi/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2017 | 2/8 | SYR4 |
| Chromium | 1.007 µg/L 1% of the EPA limit 100 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 4.96 µg/L — JACKSON WSC · 5,532 people · 2019 | 5/8 | SYR4 |
| Dibromoacetic Acid | 2.925 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 4.195 µg/L — JACKSON WSC · 5,532 people · 2019 | 6/8 | SYR4 |
| Bromoform | 1.588 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 3.396 µg/L — SOUTHERN UTILITIES · 69,735 people · 2019 | 4/8 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.3 pCi/L 22% of the EPA limit 15 pCi/L Main supplier: CITY OF TYLER · 107,000 people · 2017 | 1/8 | SYR4 |
| Selenium | 1.49 µg/L 3% of the EPA limit 50 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019
Highest in the city: 3.27 µg/L — DEAN WSC · 5,907 people · 2019 | 2/8 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CITY OF TYLER · 107,000 people · 2017
Highest in the city: 2.685 pCi/L — SAND FLAT WSC · 4,569 people · 2015 | 6/8 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.6895 µg/L 28% of the EPA limit 6 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 2/8 | SYR4 |
| Arsenic | 1.568 µg/L 16% of the EPA limit 10 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 2/8 | SYR4 |
| Antimony, Total | 0.2695 µg/L 4.5% of the EPA limit 6 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 1/8 | SYR4 |
| Atrazine | 0.1095 µg/L 3.7% of the EPA limit 3 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 1/8 | SYR4 |
| Benzo(A)Pyrene | 0.0300 µg/L 15% of the EPA limit 0.2000 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 1/8 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF TYLER · 107,000 people · 2023
Highest in the city: 0.0104 mg/L — BIG EDDY · 2,709 people · 2025 | 8/8 | LCR |
| Thallium, Total | 0.0070 µg/L 0.4% of the EPA limit 2 µg/L Main supplier: CITY OF TYLER · 107,000 people · 2019 | 1/8 | SYR4 |
| Pfba | 0.0056 µg/L No EPA limit set Highest in the city: SOUTHERN UTILITIES · 69,735 people · 2025 | 1/8 | UCMR-5 |
| Pfpea | 0.0046 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2024 | 1/8 | UCMR-5 |
| Pfhxa | 0.0034 µg/L No EPA limit set Main supplier: CITY OF TYLER · 107,000 people · 2024 | 1/8 | UCMR-5 |
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 the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Tyler
| Supplier | Population served |
|---|---|
| CITY OF TYLER | 107,000 |
| SOUTHERN UTILITIES | 69,735 |
| DEAN WSC | 5,907 |
| JACKSON WSC | 5,532 |
| SAND FLAT WSC | 4,569 |
| BIG EDDY | 2,709 |
| EAST TEXAS MUD OF SMITH COUNTY | 2,706 |
| HEIGHTS WATER | 306 |
Frequently asked questions about Tyler tap water
Is Tyler tap water safe to drink?
EPA testing detected 37 contaminants in the water serving Tyler. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Tyler?
8 public water suppliers report drinking-water monitoring for Tyler, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Tyler's water?
The contaminants EPA monitoring detected in Tyler include Copper, Fluoride, Nitrate, Nitrate-Nitrite, Xylenes, Total. The full list, with the level at the main supplier and the data source, is in the table above.
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.