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Tap water quality report

ZIP 15906 — Johnstown, PA

EPA monitoring across the 1 water supplier serving ZIP 15906 in Johnstown, PA detected 16 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

1
water supplier
49,500
people served
16
contaminants found

What was found in ZIP 15906

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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
2800 µg/L 28%
of the EPA limit 10000 µg/L
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Fluoride
709.6 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Copper
149.35 µg/L 11%
of the EPA limit 1300 µg/L
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 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
1/1 SYR4
TTHM
57.745 µg/L 72%
of the EPA limit 80 µg/L
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Chloroform
53.61 µg/L
No EPA limit set
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Monochloroacetic Acid
48.4 µg/L
No EPA limit set
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 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
1/1 SYR4
Dichloroacetic Acid
39.55 µg/L
No EPA limit set
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Trichloroacetic Acid
37.1 µg/L
No EPA limit set
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Bromodichloromethane
7.5135 µg/L
No EPA limit set
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Lead
6.84 µg/L 46%
of the EPA limit 15 µg/L
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Dibromochloromethane
1.95 µg/L
No EPA limit set
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Dibromoacetic Acid
0.4400 µg/L
No EPA limit set
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Mercury
0.2700 µg/L 14%
of the EPA limit 2 µg/L
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2019
1/1 SYR4
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
Main supplier: GREATER JOHNSTOWN WA RIVERSIDE · 49,500 people · 2025
1/1 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 15906

SupplierStatePopulation served
GREATER JOHNSTOWN WA RIVERSIDE PA 49,500

Frequently asked questions about ZIP 15906 tap water

Is the tap water in ZIP 15906 safe to drink?

EPA testing detected 16 contaminants across the water suppliers serving ZIP 15906. 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 15906?

1 public water supplier report EPA drinking-water monitoring for ZIP 15906. Each is listed above with its population served.

What contaminants are in ZIP 15906's water?

EPA monitoring detected Nitrate, Fluoride, Copper, Total Haloacetic Acids (HAA5), TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.