What was found in ZIP 78691
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 |
|---|---|---|---|
| Nitrate | 3090 µg/L 31% of the EPA limit 10000 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 2970 µg/L 30% of the EPA limit 10000 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019 | 2/2 | SYR4 |
| Fluoride | 290 µg/L 7.2% of the EPA limit 4000 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 1625 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Copper | 662.2 µg/L 51% of the EPA limit 1300 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2018 | 2/2 | SYR4 |
| Nitrite | 53.55 µg/L 5.4% of the EPA limit 1000 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 185 µg/L — MANVILLE WSC · 39,648 people · 2015 | 2/2 | SYR4 |
| Xylenes, Total | 142.25 µg/L 1.4% of the EPA limit 10000 µg/L Highest in the ZIP: MANVILLE WSC · 39,648 people · 2019 | 1/2 | SYR4 |
| Barium | 83.795 µg/L 4.2% of the EPA limit 2000 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 142 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Cyanide | 121 µg/L 61% of the EPA limit 200 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019 | 2/2 | SYR4 |
| Lithium | 13.9 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025
Highest in the ZIP: 83.8 µg/L — MANVILLE WSC · 39,648 people · 2023 | 2/2 | UCMR-5 |
| TTHM | 49.595 µg/L 62% of the EPA limit 80 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 64.85 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Ethylbenzene | 28.25 µg/L 4% of the EPA limit 700 µg/L Highest in the ZIP: MANVILLE WSC · 39,648 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 19.955 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 24.02 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 21.92 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 22.16 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 17.02 µg/L 28% of the EPA limit 60 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 21.58 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Chloroform | 12.88 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 18.9 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 9.16 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 11.6 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Bromoform | 6.35 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 9.495 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 4.745 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 8.645 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 5.7 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 6.59 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Selenium | 2.09 µg/L 4.2% of the EPA limit 50 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 6.525 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.36 pCi/L 42% of the EPA limit 15 pCi/L Highest in the ZIP: MANVILLE WSC · 39,648 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 4.96 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019 | 2/2 | SYR4 |
| Lead | 4.8195 µg/L 32% of the EPA limit 15 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2018
Highest in the ZIP: 4.875 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 4.4 pCi/L No EPA limit set Highest in the ZIP: MANVILLE WSC · 39,648 people · 2019 | 1/2 | SYR4 |
| Chromium | 1.21 µg/L 1.2% of the EPA limit 100 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 4.0695 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Arsenic | 3.965 µg/L 40% of the EPA limit 10 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 2.3 µg/L 7.7% of the EPA limit 30 µg/L Highest in the ZIP: MANVILLE WSC · 39,648 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.1105 µg/L 35% of the EPA limit 6 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2015
Highest in the ZIP: 2.108 pCi/L — MANVILLE WSC · 39,648 people · 2017 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.1 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019
Highest in the ZIP: 1.94 µg/L — MANVILLE WSC · 39,648 people · 2019 | 2/2 | SYR4 |
| Atrazine | 0.8450 µg/L 28% of the EPA limit 3 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019 | 2/2 | SYR4 |
| Simazine | 0.2825 µg/L 7.1% of the EPA limit 4 µg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2019 | 2/2 | SYR4 |
| PFNA | 0.0252 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| PFOS | 0.0144 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| Pfpea | 0.0133 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| PFBS | 0.0097 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025
Highest in the ZIP: 0.0100 µg/L — MANVILLE WSC · 39,648 people · 2023 | 2/2 | UCMR-5 |
| Pfhxa | 0.0093 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| Pfba | 0.0081 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| PFHXS | 0.0072 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| PFOA | 0.0063 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| Pfhpa | 0.0049 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| Pfuna | 0.0027 µg/L No EPA limit set Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025 | 2/2 | UCMR-5 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L Main supplier: CITY OF PFLUGERVILLE · 63,464 people · 2025
Highest in the ZIP: 0.0014 mg/L — MANVILLE WSC · 39,648 people · 2025 | 2/2 | LCR |
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 78691
| Supplier | State | Population served |
|---|---|---|
| CITY OF PFLUGERVILLE | TX | 63,464 |
| MANVILLE WSC | TX | 39,648 |
Frequently asked questions about ZIP 78691 tap water
Is the tap water in ZIP 78691 safe to drink?
EPA testing detected 43 contaminants across the water suppliers serving ZIP 78691. 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 78691?
2 public water suppliers report EPA drinking-water monitoring for ZIP 78691. Each is listed above with its population served.
What contaminants are in ZIP 78691's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.