What was found in ZIP 15401
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 | 680 µg/L 6.8% of the EPA limit 10000 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 1670 µg/L — MOUNTAIN WATER ASSN · 3,856 people · 2019 | 3/4 | SYR4 |
| Fluoride | 946 µg/L 24% of the EPA limit 4000 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019 | 3/4 | SYR4 |
| Copper | 54.395 µg/L 4.2% of the EPA limit 1300 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 595.35 µg/L — MOUNTAIN WATER ASSN · 3,856 people · 2019 | 4/4 | SYR4 |
| TTHM | 101.5 µg/L 127% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 111.575 µg/L — PA-AMERICAN WATER- UNIONTOWN · 23,125 people · 2019 | 4/4 | SYR4 |
| Nitrite | 100 µg/L 10% of the EPA limit 1000 µg/L Highest in the ZIP: NORTH FAYETTE CNTY MUNI AUTH · 35,409 people · 2019 | 1/4 | SYR4 |
| Chloroform | 71 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 93.45 µg/L — PA-AMERICAN WATER- UNIONTOWN · 23,125 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 45.04 µg/L 75% of the EPA limit 60 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 59.175 µg/L — PA-AMERICAN WATER- UNIONTOWN · 23,125 people · 2019 | 4/4 | SYR4 |
| Barium | 40.9 µg/L 2% of the EPA limit 2000 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019 | 3/4 | SYR4 |
| Dichloroacetic Acid | 27.125 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 35.89 µg/L — NORTH FAYETTE CNTY MUNI AUTH · 35,409 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 18.865 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 27.155 µg/L — NORTH FAYETTE CNTY MUNI AUTH · 35,409 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 27.1 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 4.63 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 20.5 µg/L — MOUNTAIN WATER ASSN · 3,856 people · 2019 | 3/4 | SYR4 |
| Lithium | 15.7 µg/L No EPA limit set Highest in the ZIP: PA-AMERICAN WATER- UNIONTOWN · 23,125 people · 2024 | 2/4 | UCMR-5 |
| Dibromochloromethane | 11.74 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 12.4 µg/L — PA-AMERICAN WATER- UNIONTOWN · 23,125 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 3.5825 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 9.6565 µg/L — NORTH FAYETTE CNTY MUNI AUTH · 35,409 people · 2019 | 3/4 | SYR4 |
| Cyanide | 6 µg/L 3% of the EPA limit 200 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019 | 1/4 | SYR4 |
| Lead | 5.27 µg/L 35% of the EPA limit 15 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 6 µg/L — PA-AMERICAN WATER- UNIONTOWN · 23,125 people · 2019 | 3/4 | SYR4 |
| Bromoform | 2 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019
Highest in the ZIP: 5.9 µg/L — PA-AMERICAN WATER- UNIONTOWN · 23,125 people · 2019 | 4/4 | SYR4 |
| Monobromoacetic Acid | 5.32 µg/L No EPA limit set Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019 | 3/4 | SYR4 |
| Dalapon | 1.4 µg/L 0.7% of the EPA limit 200 µg/L Highest in the ZIP: MOUNTAIN WATER ASSN · 3,856 people · 2019 | 1/4 | SYR4 |
| Antimony, Total | 0.5000 µg/L 8.3% of the EPA limit 6 µg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2019 | 1/4 | SYR4 |
| Picloram | 0.1200 µg/L 0% of the EPA limit 500 µg/L Highest in the ZIP: MOUNTAIN WATER ASSN · 3,856 people · 2019 | 1/4 | SYR4 |
| Lead | 0.00092 mg/L 6.1% of the EPA limit 0.0150 mg/L Main supplier: SOUTHWESTERN PA WATER AUTH · 40,200 people · 2025
Highest in the ZIP: 0.0022 mg/L — NORTH FAYETTE CNTY MUNI AUTH · 35,409 people · 2025 | 4/4 | 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 15401
| Supplier | State | Population served |
|---|---|---|
| SOUTHWESTERN PA WATER AUTH | PA | 40,200 |
| NORTH FAYETTE CNTY MUNI AUTH | PA | 35,409 |
| PA-AMERICAN WATER- UNIONTOWN | PA | 23,125 |
| MOUNTAIN WATER ASSN | PA | 3,856 |
Frequently asked questions about ZIP 15401 tap water
Is the tap water in ZIP 15401 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 15401. 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 15401?
4 public water suppliers report EPA drinking-water monitoring for ZIP 15401. Each is listed above with its population served.
What contaminants are in ZIP 15401's water?
EPA monitoring detected Nitrate, Fluoride, Copper, TTHM, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.