What was found in ZIP 01731
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 |
|---|---|---|---|
| TTHM | 21.4 µg/L 27% of the EPA limit 80 µg/L Main supplier: HANSCOM AFB · 11,789 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 15.26 µg/L 25% of the EPA limit 60 µg/L Main supplier: HANSCOM AFB · 11,789 people · 2019
Highest in the ZIP: 20 µg/L — HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019 | 2/2 | SYR4 |
| Chloroform | 17.2 µg/L No EPA limit set Main supplier: HANSCOM AFB · 11,789 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 12.78 µg/L No EPA limit set Main supplier: HANSCOM AFB · 11,789 people · 2019
Highest in the ZIP: 16.1 µg/L — HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 2.8525 µg/L No EPA limit set Main supplier: HANSCOM AFB · 11,789 people · 2019
Highest in the ZIP: 4 µg/L — HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 3.825 µg/L No EPA limit set Main supplier: HANSCOM AFB · 11,789 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 2.775 µg/L No EPA limit set Highest in the ZIP: HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 1.8525 µg/L No EPA limit set Main supplier: HANSCOM AFB · 11,789 people · 2019
Highest in the ZIP: 2.09 µg/L — HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 1.19 µg/L No EPA limit set Main supplier: HANSCOM AFB · 11,789 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 0.7600 µg/L No EPA limit set Highest in the ZIP: HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0048 mg/L 32% of the EPA limit 0.0150 mg/L Main supplier: HANSCOM AFB · 11,789 people · 2025 | 2/2 | 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 01731
| Supplier | State | Population served |
|---|---|---|
| HANSCOM AFB | MA | 11,789 |
| HANSCOM FAMILY HOUSING (LANDINGS) | TX | 3,067 |
Frequently asked questions about ZIP 01731 tap water
Is the tap water in ZIP 01731 safe to drink?
EPA testing detected 11 contaminants across the water suppliers serving ZIP 01731. 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 01731?
2 public water suppliers report EPA drinking-water monitoring for ZIP 01731. Each is listed above with its population served.
What contaminants are in ZIP 01731's water?
EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Chloroform, Dichloroacetic Acid, Monochloroacetic Acid, and others across this ZIP's suppliers. The full list with levels and sources is above.