What was found in ZIP 19426
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 | 4340 µg/L 43% of the EPA limit 10000 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 5155 µg/L — COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2019 | 5/5 | SYR4 |
| Copper | 966.4 µg/L 74% of the EPA limit 1300 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 1119 µg/L — COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2019 | 5/5 | SYR4 |
| Barium | 393.6 µg/L 20% of the EPA limit 2000 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2018
Highest in the ZIP: 502.9 µg/L — COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2018 | 4/5 | SYR4 |
| Fluoride | 123.7 µg/L 3.1% of the EPA limit 4000 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2018 | 4/5 | SYR4 |
| TTHM | 52.6 µg/L 66% of the EPA limit 80 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 91.38 µg/L — PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 5/5 | SYR4 |
| Chloroform | 39.9 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 60.84 µg/L — PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 5/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 18.25 µg/L 30% of the EPA limit 60 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 48.035 µg/L — PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 5/5 | SYR4 |
| Lithium | 23.6 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2025
Highest in the ZIP: 45.2 µg/L — PA AMERICAN ROYERSFORD · 49,508 people · 2024 | 5/5 | UCMR-5 |
| Lead | 22.625 µg/L 151% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 33.2 µg/L — PA AMERICAN NORRISTOWN · 88,885 people · 2019 | 5/5 | SYR4 |
| Trichloroacetic Acid | 8.81 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 33.085 µg/L — PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 4/5 | SYR4 |
| Toluene | 2.29 µg/L 0.2% of the EPA limit 1000 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 31 µg/L — AQUA PA PERKIOMEN TOWNSHIP · 3,600 people · 2019 | 2/5 | SYR4 |
| Bromodichloromethane | 10.685 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 25.08 µg/L — PA AMERICAN NORRISTOWN · 88,885 people · 2019 | 5/5 | SYR4 |
| Xylenes, Total | 21.9 µg/L 0.2% of the EPA limit 10000 µg/L Highest in the ZIP: PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 2/5 | SYR4 |
| Dibromochloromethane | 5.603 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 16.9 µg/L — PA AMERICAN NORRISTOWN · 88,885 people · 2019 | 5/5 | SYR4 |
| Dichloroacetic Acid | 13.5 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 16.325 µg/L — PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 4/5 | SYR4 |
| Bromoform | 1.988 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 7.5 µg/L — PA AMERICAN NORRISTOWN · 88,885 people · 2019 | 5/5 | SYR4 |
| Arsenic | 5.57 µg/L 56% of the EPA limit 10 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2018
Highest in the ZIP: 6.95 µg/L — AQUA PA PERKIOMEN TOWNSHIP · 3,600 people · 2019 | 4/5 | SYR4 |
| Chromium | 2.45 µg/L 2.5% of the EPA limit 100 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2018
Highest in the ZIP: 5.87 µg/L — AQUA PA PERKIOMEN TOWNSHIP · 3,600 people · 2018 | 2/5 | SYR4 |
| Combined Uranium | 5.28354 µg/L 18% of the EPA limit 30 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2017 | 4/5 | SYR4 |
| cis-1,2-Dichloroethylene | 4.01 µg/L 5.7% of the EPA limit 70 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019 | 2/5 | SYR4 |
| Ethylbenzene | 3.3 µg/L 0.5% of the EPA limit 700 µg/L Highest in the ZIP: PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 1/5 | SYR4 |
| Dibromoacetic Acid | 1.5855 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019
Highest in the ZIP: 3.13 µg/L — PA AMERICAN NORRISTOWN · 88,885 people · 2019 | 5/5 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.985 µg/L 50% of the EPA limit 6 µg/L Highest in the ZIP: PA AMERICAN NORRISTOWN · 88,885 people · 2019 | 2/5 | SYR4 |
| Selenium | 1.88 µg/L 3.8% of the EPA limit 50 µg/L Highest in the ZIP: AQUA PA PERKIOMEN TOWNSHIP · 3,600 people · 2018 | 1/5 | SYR4 |
| Trichloroethylene | 1.2035 µg/L 24% of the EPA limit 5 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019 | 2/5 | SYR4 |
| Tetrachloroethylene | 0.9204 µg/L 18% of the EPA limit 5 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019 | 2/5 | SYR4 |
| Carbon Tetrachloride | 0.8000 µg/L 16% of the EPA limit 5 µg/L Highest in the ZIP: PA AMERICAN NORRISTOWN · 88,885 people · 2019 | 1/5 | SYR4 |
| Antimony, Total | 0.7000 µg/L 12% of the EPA limit 6 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2018 | 3/5 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.6000 µg/L 0.2% of the EPA limit 400 µg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2019 | 1/5 | SYR4 |
| Dichloromethane | 0.5000 µg/L 10% of the EPA limit 5 µg/L Highest in the ZIP: PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 1/5 | SYR4 |
| PFOA | 0.0051 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2025
Highest in the ZIP: 0.2350 µg/L — COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2023 | 4/5 | UCMR-5 |
| Atrazine | 0.2000 µg/L 6.7% of the EPA limit 3 µg/L Highest in the ZIP: PA AMERICAN ROYERSFORD · 49,508 people · 2019 | 2/5 | SYR4 |
| PFBS | 0.0040 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2025
Highest in the ZIP: 0.0153 µg/L — COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2023 | 5/5 | UCMR-5 |
| PFOS | 0.0150 µg/L No EPA limit set Highest in the ZIP: COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2023 | 3/5 | UCMR-5 |
| Pfhxa | 0.0109 µg/L No EPA limit set Highest in the ZIP: COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2023 | 4/5 | UCMR-5 |
| Pfpea | 0.0034 µg/L No EPA limit set Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2025
Highest in the ZIP: 0.0084 µg/L — COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2023 | 5/5 | UCMR-5 |
| Pfba | 0.0070 µg/L No EPA limit set Highest in the ZIP: PA AMERICAN NORRISTOWN · 88,885 people · 2024 | 4/5 | UCMR-5 |
| Pfhpa | 0.0062 µg/L No EPA limit set Highest in the ZIP: COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2023 | 3/5 | UCMR-5 |
| PFHXS | 0.0050 µg/L No EPA limit set Highest in the ZIP: PA AMERICAN ROYERSFORD · 49,508 people · 2024 | 2/5 | UCMR-5 |
| Lead | 0.00050 mg/L 3.3% of the EPA limit 0.0150 mg/L Main supplier: NORTH PENN WATER AUTHORITY · 91,941 people · 2025
Highest in the ZIP: 0.0030 mg/L — COLLEGEVILLE TRAPPE JOINT PWD · 8,470 people · 2025 | 5/5 | 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 19426
| Supplier | State | Population served |
|---|---|---|
| NORTH PENN WATER AUTHORITY | PA | 91,941 |
| PA AMERICAN NORRISTOWN | PA | 88,885 |
| PA AMERICAN ROYERSFORD | PA | 49,508 |
| COLLEGEVILLE TRAPPE JOINT PWD | PA | 8,470 |
| AQUA PA PERKIOMEN TOWNSHIP | PA | 3,600 |
Frequently asked questions about ZIP 19426 tap water
Is the tap water in ZIP 19426 safe to drink?
EPA testing detected 40 contaminants across the water suppliers serving ZIP 19426. 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 19426?
5 public water suppliers report EPA drinking-water monitoring for ZIP 19426. Each is listed above with its population served.
What contaminants are in ZIP 19426's water?
EPA monitoring detected Nitrate, Copper, Barium, Fluoride, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.