What was found in Hopatcong boro-1912's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 6818.9 µg/L 68% of the EPA limit 10000 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Copper | 1388 µg/L 107% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Barium | 492.2 µg/L 25% of the EPA limit 2000 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Fluoride | 297 µg/L 7.4% of the EPA limit 4000 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| TTHM | 29.233 µg/L 37% of the EPA limit 80 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Lead | 16.8 µg/L 112% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 11.53 µg/L 19% of the EPA limit 60 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Lithium | 9.76 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2025 | 1/1 | UCMR-5 |
| Bromodichloromethane | 9.5495 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 9.055 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Chromium | 8.3305 µg/L 8.3% of the EPA limit 100 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Chloroform | 7.69 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 7.545 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.194 pCi/L 28% of the EPA limit 15 pCi/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Dichloroacetic Acid | 4.1 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Bromoform | 4.071 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 3.839 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 2.9035 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 2.842 µg/L 57% of the EPA limit 5 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 2.593 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 1.65112 µg/L 5.5% of the EPA limit 30 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 1.4495 pCi/L 29% of the EPA limit 5 pCi/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Thallium, Total | 1.398 µg/L 70% of the EPA limit 2 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Beryllium, Total | 0.0947 µg/L 2.4% of the EPA limit 4 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Mercury | 0.0726 µg/L 3.6% of the EPA limit 2 µg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2018 | 1/1 | SYR4 |
| Pfba | 0.0116 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0103 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0099 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0090 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0084 mg/L 56% of the EPA limit 0.0150 mg/L Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2026 | 1/1 | LCR |
| PFBS | 0.0077 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2025 | 1/1 | UCMR-5 |
| Pfhpa | 0.0039 µg/L No EPA limit set Main supplier: HOPATCONG WATER DEPT · 7,224 people · 2025 | 1/1 | UCMR-5 |
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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Hopatcong boro-1912
| Supplier | Population served |
|---|---|
| HOPATCONG WATER DEPT | 7,224 |
Frequently asked questions about Hopatcong boro-1912 tap water
Is Hopatcong boro-1912 tap water safe to drink?
EPA testing detected 32 contaminants in the water serving Hopatcong boro-1912. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Hopatcong boro-1912?
1 public water supplier report drinking-water monitoring for Hopatcong boro-1912, New Jersey to the EPA. Each is listed above with its population served.
What contaminants are in Hopatcong boro-1912's water?
The contaminants EPA monitoring detected in Hopatcong boro-1912 include Nitrate, Copper, Barium, Fluoride, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.