What was found in ZIP 15904
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 | 2800 µg/L 28% of the EPA limit 10000 µg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 3000 µg/L — HIGHLAND S & W AUTH BEAVERDAM · 22,617 people · 2019 | 3/3 | SYR4 |
| Copper | 149.35 µg/L 11% of the EPA limit 1300 µg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 783.15 µg/L — CONEMAUGH TWP MUNI AUTH · 7,800 people · 2019 | 3/3 | SYR4 |
| Fluoride | 709.6 µg/L 18% of the EPA limit 4000 µg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019 | 1/3 | SYR4 |
| Monochloroacetic Acid | 48.4 µg/L No EPA limit set Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 65.45 µg/L — HIGHLAND S & W AUTH BEAVERDAM · 22,617 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 64.35 µg/L 107% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019 | 3/3 | SYR4 |
| TTHM | 57.745 µg/L 72% of the EPA limit 80 µg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 61.95 µg/L — CONEMAUGH TWP MUNI AUTH · 7,800 people · 2019 | 3/3 | SYR4 |
| Chloroform | 53.61 µg/L No EPA limit set Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 57.84 µg/L — CONEMAUGH TWP MUNI AUTH · 7,800 people · 2019 | 3/3 | SYR4 |
| Barium | 41.65 µg/L 2.1% of the EPA limit 2000 µg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 39.55 µg/L No EPA limit set Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 37.1 µg/L No EPA limit set Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 1.95 µg/L No EPA limit set Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 17.8385 µg/L — CONEMAUGH TWP MUNI AUTH · 7,800 people · 2019 | 3/3 | SYR4 |
| Lead | 6.84 µg/L 46% of the EPA limit 15 µg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 16.89 µg/L — CONEMAUGH TWP MUNI AUTH · 7,800 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 7.5135 µg/L No EPA limit set Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 7.8265 µg/L — HIGHLAND S & W AUTH BEAVERDAM · 22,617 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 2.007 µg/L No EPA limit set Highest in the ZIP: HIGHLAND S & W AUTH BEAVERDAM · 22,617 people · 2019 | 1/3 | SYR4 |
| Mercury | 0.2700 µg/L 14% of the EPA limit 2 µg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
Highest in the ZIP: 0.7768 µg/L — HIGHLAND S & W AUTH BEAVERDAM · 22,617 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 0.4400 µg/L No EPA limit set Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019 | 2/3 | SYR4 |
| Pfba | 0.0132 µg/L No EPA limit set Highest in the ZIP: CONEMAUGH TWP MUNI AUTH · 7,800 people · 2023 | 1/3 | UCMR-5 |
| Lead | 0.0050 mg/L 33% of the EPA limit 0.0150 mg/L Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2025 | 3/3 | 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 15904
| Supplier | State | Population served |
|---|---|---|
| GREATER JOHNSTOWN WA RIVERSIDE | PA | 49,500 |
| HIGHLAND S & W AUTH BEAVERDAM | PA | 22,617 |
| CONEMAUGH TWP MUNI AUTH | PA | 7,800 |
Frequently asked questions about ZIP 15904 tap water
Is the tap water in ZIP 15904 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 15904. 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 15904?
3 public water suppliers report EPA drinking-water monitoring for ZIP 15904. Each is listed above with its population served.
What contaminants are in ZIP 15904's water?
EPA monitoring detected Nitrate, Copper, Fluoride, Monochloroacetic Acid, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.