What was found in ZIP 01235
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 | 116 µg/L 1.2% of the EPA limit 10000 µg/L Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019
Highest in the ZIP: 1300 µg/L — SOUTH ASHMERE WATER ASSOCIATION INC · 150 people · 2019 | 4/4 | SYR4 |
| Fluoride | 259 µg/L 6.5% of the EPA limit 4000 µg/L Highest in the ZIP: BISSELVILLE ESTATE · 74 people · 2017 | 1/4 | SYR4 |
| Chloroform | 49.17 µg/L No EPA limit set Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 48.54 µg/L 81% of the EPA limit 60 µg/L Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019 | 1/4 | SYR4 |
| TTHM | 46.3725 µg/L 58% of the EPA limit 80 µg/L Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019 | 1/4 | SYR4 |
| Trichloroacetic Acid | 32.13 µg/L No EPA limit set Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019 | 1/4 | SYR4 |
| Dichloroacetic Acid | 25.06 µg/L No EPA limit set Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019 | 1/4 | SYR4 |
| Barium | 15.955 µg/L 0.8% of the EPA limit 2000 µg/L Highest in the ZIP: BISSELVILLE ESTATE · 74 people · 2017 | 1/4 | SYR4 |
| Bromodichloromethane | 3.145 µg/L No EPA limit set Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019 | 1/4 | SYR4 |
| Monochloroacetic Acid | 1.58 µg/L No EPA limit set Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019 | 1/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9800 µg/L 16% of the EPA limit 6 µg/L Highest in the ZIP: SOUTH ASHMERE WATER ASSOCIATION INC · 150 people · 2018 | 1/4 | SYR4 |
| Monobromoacetic Acid | 0.5200 µg/L No EPA limit set Main supplier: HINSDALE WATER DEPT · 1,000 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: HINSDALE WATER DEPT · 1,000 people · 2023
Highest in the ZIP: 0.0069 mg/L — ASHMERE WATER SERVICE · 66 people · 2025 | 4/4 | 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 01235
| Supplier | State | Population served |
|---|---|---|
| HINSDALE WATER DEPT | MA | 1,000 |
| SOUTH ASHMERE WATER ASSOCIATION INC | DE | 150 |
| BISSELVILLE ESTATE | MA | 74 |
| ASHMERE WATER SERVICE | MA | 66 |
Frequently asked questions about ZIP 01235 tap water
Is the tap water in ZIP 01235 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 01235. 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 01235?
4 public water suppliers report EPA drinking-water monitoring for ZIP 01235. Each is listed above with its population served.
What contaminants are in ZIP 01235's water?
EPA monitoring detected Nitrate, Fluoride, Chloroform, Total Haloacetic Acids (HAA5), TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.