What was found in ZIP 18657
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 | 3750 µg/L 38% of the EPA limit 10000 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Copper | 758 µg/L 58% of the EPA limit 1300 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Barium | 282.15 µg/L 14% of the EPA limit 2000 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2018 | 1/1 | SYR4 |
| Fluoride | 230 µg/L 5.8% of the EPA limit 4000 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2018 | 1/1 | SYR4 |
| Lithium | 153 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2023 | 1/1 | UCMR-5 |
| TTHM | 26.1 µg/L 33% of the EPA limit 80 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Bromoform | 17.42 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 9.1995 µg/L 15% of the EPA limit 60 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Arsenic | 8.7 µg/L 87% of the EPA limit 10 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2018 | 1/1 | SYR4 |
| Chloroform | 8.035 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 6.775 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 5.085 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Cyanide | 5 µg/L 2.5% of the EPA limit 200 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2018 | 1/1 | SYR4 |
| Dichloroacetic Acid | 4.93 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 3.58867 µg/L 12% of the EPA limit 30 µg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2018 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.23 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 1.07 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0066 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0055 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2023 | 1/1 | UCMR-5 |
| PFOA | 0.0048 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2023 | 1/1 | UCMR-5 |
| Pfhxa | 0.0044 µg/L No EPA limit set Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: TUNKHANNOCK BORO MUNIC AUTH · 5,349 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 18657
| Supplier | State | Population served |
|---|---|---|
| TUNKHANNOCK BORO MUNIC AUTH | PA | 5,349 |
Frequently asked questions about ZIP 18657 tap water
Is the tap water in ZIP 18657 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 18657. 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 18657?
1 public water supplier report EPA drinking-water monitoring for ZIP 18657. Each is listed above with its population served.
What contaminants are in ZIP 18657's water?
EPA monitoring detected Nitrate, Copper, Barium, Fluoride, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.