What was found in ZIP 02420
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 |
|---|---|---|---|
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: LEXINGTON WATER DEPT. (MWRA) · 34,074 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 02420
| Supplier | State | Population served |
|---|---|---|
| LEXINGTON WATER DEPT. (MWRA) | MA | 34,074 |
Frequently asked questions about ZIP 02420 tap water
Is the tap water in ZIP 02420 safe to drink?
EPA testing detected 1 contaminant across the water suppliers serving ZIP 02420. 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 02420?
1 public water supplier report EPA drinking-water monitoring for ZIP 02420. Each is listed above with its population served.
What contaminants are in ZIP 02420's water?
EPA monitoring detected Lead across this ZIP's suppliers. The full list with levels and sources is above.