What was found in ZIP 01776
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 | 6210 µg/L 62% of the EPA limit 10000 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 2/2 | SYR4 |
| Fluoride | 1100 µg/L 28% of the EPA limit 4000 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2018 | 2/2 | SYR4 |
| Cyanide | 209.5 µg/L 105% of the EPA limit, at the 95th percentile of samples — 200 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 1/2 | SYR4 |
| Copper | 89.68 µg/L 6.9% of the EPA limit 1300 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019
Highest in the ZIP: 97.295 µg/L — MAYNARD DPW, WATER DIVISION · 10,616 people · 2019 | 2/2 | SYR4 |
| TTHM | 81.865 µg/L 102% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019
Highest in the ZIP: 97.15 µg/L — MAYNARD DPW, WATER DIVISION · 10,616 people · 2019 | 2/2 | SYR4 |
| Chloroform | 48.05 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019
Highest in the ZIP: 73.85 µg/L — MAYNARD DPW, WATER DIVISION · 10,616 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 40.62 µg/L 68% of the EPA limit 60 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019
Highest in the ZIP: 62 µg/L — MAYNARD DPW, WATER DIVISION · 10,616 people · 2019 | 2/2 | SYR4 |
| Barium | 51.6 µg/L 2.6% of the EPA limit 2000 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2018
Highest in the ZIP: 55 µg/L — MAYNARD DPW, WATER DIVISION · 10,616 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 24 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019
Highest in the ZIP: 45 µg/L — MAYNARD DPW, WATER DIVISION · 10,616 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 27.2 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 17.55 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 12.1 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 9.075 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 2/2 | SYR4 |
| Arsenic | 1.91 µg/L 19% of the EPA limit 10 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2018
Highest in the ZIP: 8.4 µg/L — MAYNARD DPW, WATER DIVISION · 10,616 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 5.865 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 4.63 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 2/2 | SYR4 |
| Bromoform | 2.17 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 2/2 | SYR4 |
| Trichloroethylene | 0.7470 µg/L 15% of the EPA limit 5 µg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2019 | 1/2 | SYR4 |
| Chlorobenzene | 0.5000 µg/L 0.5% of the EPA limit 100 µg/L Highest in the ZIP: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019 | 1/2 | SYR4 |
| PFOA | 0.0090 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2025 | 2/2 | UCMR-5 |
| Pfhxa | 0.0060 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2025 | 2/2 | UCMR-5 |
| Pfba | 0.0050 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2025 | 1/2 | UCMR-5 |
| Pfpea | 0.0050 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2025 | 2/2 | UCMR-5 |
| PFOS | 0.0042 µg/L No EPA limit set Highest in the ZIP: MAYNARD DPW, WATER DIVISION · 10,616 people · 2024 | 1/2 | UCMR-5 |
| PFBS | 0.0040 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2025 | 2/2 | UCMR-5 |
| Lead | 0.0035 mg/L 23% of the EPA limit 0.0150 mg/L Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2025 | 2/2 | LCR |
| Pfhpa | 0.0030 µg/L No EPA limit set Main supplier: SUDBURY WATER DISTRICT · 18,416 people · 2025 | 1/2 | 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.
Water suppliers serving ZIP 01776
| Supplier | State | Population served |
|---|---|---|
| SUDBURY WATER DISTRICT | MA | 18,416 |
| MAYNARD DPW, WATER DIVISION | MA | 10,616 |
Frequently asked questions about ZIP 01776 tap water
Is the tap water in ZIP 01776 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 01776. 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 01776?
2 public water suppliers report EPA drinking-water monitoring for ZIP 01776. Each is listed above with its population served.
What contaminants are in ZIP 01776's water?
EPA monitoring detected Nitrate, Fluoride, Cyanide, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.