What was found in ZIP 01746
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 | 5400 µg/L 54% of the EPA limit 10000 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Fluoride | 1032.5 µg/L 26% of the EPA limit 4000 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2017 | 1/1 | SYR4 |
| TTHM | 92 µg/L 115% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Chloroform | 60.6 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Copper | 58 µg/L 4.5% of the EPA limit 1300 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 48.95 µg/L 82% of the EPA limit 60 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Barium | 41.08 µg/L 2.1% of the EPA limit 2000 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2017 | 1/1 | SYR4 |
| Trichloroacetic Acid | 28.9 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 20.2 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 12.9 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 12 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Arsenic | 5.27 µg/L 53% of the EPA limit 10 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2017 | 1/1 | SYR4 |
| Monobromoacetic Acid | 3.575 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Bromoform | 2.97 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.86 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.185 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.38 µg/L 1.4% of the EPA limit 100 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2017 | 1/1 | SYR4 |
| 2,4-D | 0.7291 µg/L 1% of the EPA limit 70 µg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0065 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0053 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2025 | 1/1 | UCMR-5 |
| PFBS | 0.0039 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0035 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0033 µg/L No EPA limit set Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0029 mg/L 19% of the EPA limit 0.0150 mg/L Main supplier: HOLLISTON WATER DEPARTMENT · 15,139 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 01746
| Supplier | State | Population served |
|---|---|---|
| HOLLISTON WATER DEPARTMENT | MA | 15,139 |
Frequently asked questions about ZIP 01746 tap water
Is the tap water in ZIP 01746 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 01746. 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 01746?
1 public water supplier report EPA drinking-water monitoring for ZIP 01746. Each is listed above with its population served.
What contaminants are in ZIP 01746's water?
EPA monitoring detected Nitrate, Fluoride, TTHM, Chloroform, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.