What was found in ZIP 01864
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 |
|---|---|---|---|
| Fluoride | 1175 µg/L 29% of the EPA limit 4000 µg/L Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2018 | 1/1 | SYR4 |
| Nitrate | 1051.5 µg/L 11% of the EPA limit 10000 µg/L Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2018 | 1/1 | SYR4 |
| TTHM | 91.945 µg/L 115% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Chloroform | 80.335 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Barium | 31.8 µg/L 1.6% of the EPA limit 2000 µg/L Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2018 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 22.665 µg/L 38% of the EPA limit 60 µg/L Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 21.86 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 13.98 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 8.142 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 5.702 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.9275 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 1.717 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2019 | 1/1 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2018 | 1/1 | SYR4 |
| Carbofuran | 0.9000 µg/L 2.3% of the EPA limit 40 µg/L Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2016 | 1/1 | SYR4 |
| Toluene | 0.8200 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2018 | 1/1 | SYR4 |
| Pfba | 0.0060 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0040 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0030 µg/L No EPA limit set Main supplier: NORTH READING WATER DEPT. · 16,379 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0017 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: NORTH READING WATER DEPT. · 16,379 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 01864
| Supplier | State | Population served |
|---|---|---|
| NORTH READING WATER DEPT. | MA | 16,379 |
Frequently asked questions about ZIP 01864 tap water
Is the tap water in ZIP 01864 safe to drink?
EPA testing detected 19 contaminants across the water suppliers serving ZIP 01864. 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 01864?
1 public water supplier report EPA drinking-water monitoring for ZIP 01864. Each is listed above with its population served.
What contaminants are in ZIP 01864's water?
EPA monitoring detected Fluoride, Nitrate, TTHM, Chloroform, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.