What was found in ZIP 78734
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 689 µg/L 17% of the EPA limit 4000 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 2/2 | SYR4 |
| Copper | 567.45 µg/L 44% of the EPA limit 1300 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 603 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Nitrate | 520 µg/L 5.2% of the EPA limit 10000 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 550 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Chlorite | 394 µg/L 39% of the EPA limit 1000 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2014 | 1/2 | SYR4 |
| Cyanide | 119 µg/L 60% of the EPA limit 200 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 2/2 | SYR4 |
| TTHM | 45.82 µg/L 57% of the EPA limit 80 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 70.08 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Barium | 65.4 µg/L 3.3% of the EPA limit 2000 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 2/2 | SYR4 |
| Chloroform | 21.24 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 39.695 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 21.82 µg/L 36% of the EPA limit 60 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 34.045 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 17.4 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 21.22 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 13.07 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 20.95 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 15.015 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 5.9 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 12.5 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Lead | 4.079 µg/L 27% of the EPA limit 15 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 5.655 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 5.61 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 2/2 | SYR4 |
| Bromoform | 5.11 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019
Highest in the ZIP: 5.2 µg/L — LAKEWAY MUD · 10,512 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 5.15 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 4.955 pCi/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 1/2 | SYR4 |
| Selenium | 3 µg/L 6% of the EPA limit 50 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 2.6 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 1/2 | SYR4 |
| Arsenic | 2.48 µg/L 25% of the EPA limit 10 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 1/2 | SYR4 |
| Chromium | 1.7 µg/L 1.7% of the EPA limit 100 µg/L Highest in the ZIP: LAKEWAY MUD · 10,512 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2017 | 2/2 | SYR4 |
| Combined Uranium | 1.1 µg/L 3.7% of the EPA limit 30 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.6380 µg/L 11% of the EPA limit 6 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 1/2 | SYR4 |
| Thallium, Total | 0.5380 µg/L 27% of the EPA limit 2 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 0.2540 µg/L 4.2% of the EPA limit 6 µg/L Highest in the ZIP: LAKEWAY MUD · 10,512 people · 2019 | 1/2 | SYR4 |
| Bhc-Gamma | 0.0800 µg/L 40% of the EPA limit 0.2000 µg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0031 mg/L 21% of the EPA limit 0.0150 mg/L Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2023
Highest in the ZIP: 0.0033 mg/L — LAKEWAY MUD · 10,512 people · 2023 | 2/2 | LCR |
| Pfpea | 0.0032 µg/L No EPA limit set Main supplier: TRAVIS COUNTY WCID 17 · 45,165 people · 2024 | 1/2 | 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.
Water suppliers serving ZIP 78734
| Supplier | State | Population served |
|---|---|---|
| TRAVIS COUNTY WCID 17 | TX | 45,165 |
| LAKEWAY MUD | TX | 10,512 |
Frequently asked questions about ZIP 78734 tap water
Is the tap water in ZIP 78734 safe to drink?
EPA testing detected 30 contaminants across the water suppliers serving ZIP 78734. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 78734?
2 public water suppliers report EPA drinking-water monitoring for ZIP 78734. Each is listed above with its population served.
What contaminants are in ZIP 78734's water?
EPA monitoring detected Fluoride, Copper, Nitrate, Chlorite, Cyanide, and others across this ZIP's suppliers. The full list with levels and sources is above.