What was found in ZIP 18976
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 | 4700 µg/L 47% of the EPA limit 10000 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 5149 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 4/4 | SYR4 |
| Copper | 458 µg/L 35% of the EPA limit 1300 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 1300 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 4/4 | SYR4 |
| Chlorite | 590 µg/L 59% of the EPA limit 1000 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 1/4 | SYR4 |
| Fluoride | 588 µg/L 15% of the EPA limit 4000 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 2/4 | SYR4 |
| Barium | 183.2 µg/L 9.2% of the EPA limit 2000 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 520 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2018 | 4/4 | SYR4 |
| Nitrite | 20 µg/L 2% of the EPA limit 1000 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 109.5 µg/L — NWWA WARRINGTON TOWNSHIP · 21,588 people · 2019 | 2/4 | SYR4 |
| TTHM | 78.56 µg/L 98% of the EPA limit 80 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 55.28 µg/L 92% of the EPA limit 60 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 4/4 | SYR4 |
| Chloroform | 47.3 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 4/4 | SYR4 |
| Combined Uranium | 12.9779 µg/L 43% of the EPA limit 30 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2017
Highest in the ZIP: 46.8818 µg/L — NWWA WARRINGTON TOWNSHIP · 21,588 people · 2017 | 4/4 | SYR4 |
| Trichloroacetic Acid | 25.71 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 22.8 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 23.4 µg/L — NORTH WALES WATER AUTHORITY · 72,496 people · 2019 | 4/4 | SYR4 |
| Lead | 15.1 µg/L 101% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 23 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 4/4 | SYR4 |
| Lithium | 15.7 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024
Highest in the ZIP: 20.6 µg/L — NWWA WARRINGTON TOWNSHIP · 21,588 people · 2025 | 4/4 | UCMR-5 |
| Bromodichloromethane | 17.5 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 4/4 | SYR4 |
| Chromium | 8.46 µg/L 8.5% of the EPA limit 100 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 12.4 µg/L — NWWA WARRINGTON TOWNSHIP · 21,588 people · 2015 | 4/4 | SYR4 |
| Cyanide | 10 µg/L 5% of the EPA limit 200 µg/L Highest in the ZIP: NORTH WALES WATER AUTHORITY · 72,496 people · 2019 | 1/4 | SYR4 |
| Arsenic | 1.3 µg/L 13% of the EPA limit 10 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 8.8 µg/L — NWWA WARRINGTON TOWNSHIP · 21,588 people · 2018 | 4/4 | SYR4 |
| Selenium | 2.315 µg/L 4.6% of the EPA limit 50 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 6.9 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2018 | 3/4 | SYR4 |
| Dibromochloromethane | 6.105 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 6.404 µg/L — NWWA WARRINGTON TOWNSHIP · 21,588 people · 2019 | 4/4 | SYR4 |
| Xylenes, Total | 2.795 µg/L 0% of the EPA limit 10000 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 4.155 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 2/4 | SYR4 |
| Monochloroacetic Acid | 3.595 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 1/4 | SYR4 |
| Bromate | 3.445 µg/L 34% of the EPA limit 10 µg/L Highest in the ZIP: NORTH WALES WATER AUTHORITY · 72,496 people · 2019 | 1/4 | SYR4 |
| Tetrachloroethylene | 3.3 µg/L 66% of the EPA limit 5 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 3/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.474 µg/L 25% of the EPA limit 6 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 3.2355 µg/L — NWWA WARRINGTON TOWNSHIP · 21,588 people · 2019 | 3/4 | SYR4 |
| Bromoform | 1.075 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 3.09 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2019 | 4/4 | SYR4 |
| Trichloroethylene | 2.225 µg/L 45% of the EPA limit 5 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 2.2 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 3/4 | SYR4 |
| 1,1-Dichloroethylene | 2.1 µg/L 30% of the EPA limit 7 µg/L Highest in the ZIP: DTMA MAIN SYSTEM · 8,655 people · 2019 | 2/4 | SYR4 |
| Monobromoacetic Acid | 1.71 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 1/4 | SYR4 |
| 2,4-D | 1.5 µg/L 2.1% of the EPA limit 70 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 1/4 | SYR4 |
| Ethylbenzene | 1.09 µg/L 0.2% of the EPA limit 700 µg/L Highest in the ZIP: DTMA MAIN SYSTEM · 8,655 people · 2019 | 1/4 | SYR4 |
| cis-1,2-Dichloroethylene | 0.9850 µg/L 1.4% of the EPA limit 70 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 2/4 | SYR4 |
| Styrene | 0.7800 µg/L 0.8% of the EPA limit 100 µg/L Highest in the ZIP: DTMA MAIN SYSTEM · 8,655 people · 2019 | 1/4 | SYR4 |
| Antimony, Total | 0.7000 µg/L 12% of the EPA limit 6 µg/L Highest in the ZIP: NORTH WALES WATER AUTHORITY · 72,496 people · 2019 | 1/4 | SYR4 |
| Toluene | 0.7000 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 1/4 | SYR4 |
| 1,1,1-Trichloroethane | 0.5000 µg/L 0.3% of the EPA limit 200 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019 | 1/4 | SYR4 |
| Atrazine | 0.2800 µg/L 9.3% of the EPA limit 3 µg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2019
Highest in the ZIP: 0.2950 µg/L — NORTH WALES WATER AUTHORITY · 72,496 people · 2019 | 2/4 | SYR4 |
| Carbon Tetrachloride | 0.1100 µg/L 2.2% of the EPA limit 5 µg/L Highest in the ZIP: NWWA WARRINGTON TOWNSHIP · 21,588 people · 2019 | 1/4 | SYR4 |
| Heptachlor | 0.1100 µg/L 27% of the EPA limit 0.4000 µg/L Highest in the ZIP: NWWA WARRINGTON TOWNSHIP · 21,588 people · 2019 | 1/4 | SYR4 |
| Mercury | 0.0257 µg/L 1.3% of the EPA limit 2 µg/L Highest in the ZIP: NWWA WARRINGTON TOWNSHIP · 21,588 people · 2015 | 1/4 | SYR4 |
| Pfpea | 0.0218 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024 | 3/4 | UCMR-5 |
| Pfhxa | 0.0172 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024 | 3/4 | UCMR-5 |
| PFOA | 0.0126 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024
Highest in the ZIP: 0.0142 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 3/4 | UCMR-5 |
| PFOS | 0.0092 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024
Highest in the ZIP: 0.0134 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 3/4 | UCMR-5 |
| PFNA | 0.0120 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024 | 3/4 | UCMR-5 |
| Pfba | 0.0101 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024 | 4/4 | UCMR-5 |
| PFBS | 0.0095 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024
Highest in the ZIP: 0.0098 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 3/4 | UCMR-5 |
| PFHXS | 0.0077 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024 | 2/4 | UCMR-5 |
| Pfhpa | 0.0069 µg/L No EPA limit set Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2024
Highest in the ZIP: 0.0072 µg/L — DTMA MAIN SYSTEM · 8,655 people · 2025 | 3/4 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: AQUA PA MAIN SYSTEM · 822,600 people · 2025
Highest in the ZIP: 0.0016 mg/L — NORTH WALES WATER AUTHORITY · 72,496 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 18976
| Supplier | State | Population served |
|---|---|---|
| AQUA PA MAIN SYSTEM | PA | 822,600 |
| NORTH WALES WATER AUTHORITY | PA | 72,496 |
| NWWA WARRINGTON TOWNSHIP | PA | 21,588 |
| DTMA MAIN SYSTEM | PA | 8,655 |
Frequently asked questions about ZIP 18976 tap water
Is the tap water in ZIP 18976 safe to drink?
EPA testing detected 51 contaminants across the water suppliers serving ZIP 18976. 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 18976?
4 public water suppliers report EPA drinking-water monitoring for ZIP 18976. Each is listed above with its population served.
What contaminants are in ZIP 18976's water?
EPA monitoring detected Nitrate, Copper, Chlorite, Fluoride, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.