What was found in ZIP 01886
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 | 2000 µg/L 20% of the EPA limit 10000 µg/L Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 3/3 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 2/3 | SYR4 |
| Copper | 208.45 µg/L 16% of the EPA limit 1300 µg/L Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 3/3 | SYR4 |
| Barium | 26.3 µg/L 1.3% of the EPA limit 2000 µg/L Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019
Highest in the ZIP: 82.6 µg/L — LITTLETON WATER DEPARTMENT · 9,307 people · 2018 | 2/3 | SYR4 |
| TTHM | 82.15 µg/L 103% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 79.013 µg/L 263% of the EPA limit, at the 95th percentile of samples — 30 µg/L Highest in the ZIP: HAYSTACK ESTATES · 60 people · 2019 | 1/3 | SYR4 |
| Lithium | 74 µg/L No EPA limit set Highest in the ZIP: HAYSTACK ESTATES · 60 people · 2025 | 1/3 | UCMR-5 |
| Chloroform | 46.245 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 35.525 µg/L 59% of the EPA limit 60 µg/L Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 25.59 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 19.545 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 18.71 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 1/3 | SYR4 |
| Dichloroacetic Acid | 13.695 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 2/3 | SYR4 |
| Arsenic | 3.85 µg/L 39% of the EPA limit 10 µg/L Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019
Highest in the ZIP: 10.25 µg/L — LITTLETON WATER DEPARTMENT · 9,307 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 3.136 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019
Highest in the ZIP: 5.3 µg/L — HAYSTACK ESTATES · 60 people · 2019 | 2/3 | SYR4 |
| Bromoform | 3.628 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019
Highest in the ZIP: 4.639 µg/L — LITTLETON WATER DEPARTMENT · 9,307 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 3.6285 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 3/3 | SYR4 |
| Chromium | 2.1 µg/L 2.1% of the EPA limit 100 µg/L Highest in the ZIP: HAYSTACK ESTATES · 60 people · 2018 | 1/3 | SYR4 |
| Monobromoacetic Acid | 1.8805 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2019 | 2/3 | SYR4 |
| Bromate | 1 µg/L 10% of the EPA limit 10 µg/L Highest in the ZIP: LITTLETON WATER DEPARTMENT · 9,307 people · 2019 | 1/3 | SYR4 |
| Tetrachloroethylene | 0.9400 µg/L 19% of the EPA limit 5 µg/L Highest in the ZIP: LITTLETON WATER DEPARTMENT · 9,307 people · 2019 | 1/3 | SYR4 |
| PFOA | 0.0086 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2023 | 2/3 | UCMR-5 |
| Pfhxa | 0.0044 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2023 | 2/3 | UCMR-5 |
| PFOS | 0.0044 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2023 | 1/3 | UCMR-5 |
| Pfpea | 0.0043 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2023 | 2/3 | UCMR-5 |
| PFBS | 0.0032 µg/L No EPA limit set Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2023
Highest in the ZIP: 0.0033 µg/L — HAYSTACK ESTATES · 60 people · 2025 | 2/3 | UCMR-5 |
| Lead | 0.0029 mg/L 19% of the EPA limit 0.0150 mg/L Main supplier: WESTFORD WATER DEPARTMENT · 18,848 people · 2025 | 3/3 | 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 01886
| Supplier | State | Population served |
|---|---|---|
| WESTFORD WATER DEPARTMENT | MA | 18,848 |
| LITTLETON WATER DEPARTMENT | MA | 9,307 |
| HAYSTACK ESTATES | MA | 60 |
Frequently asked questions about ZIP 01886 tap water
Is the tap water in ZIP 01886 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 01886. 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 01886?
3 public water suppliers report EPA drinking-water monitoring for ZIP 01886. Each is listed above with its population served.
What contaminants are in ZIP 01886's water?
EPA monitoring detected Nitrate, Fluoride, Copper, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.