What was found in ZIP 01523
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 | 1450 µg/L 14% of the EPA limit 10000 µg/L Main supplier: LANCASTER WATER DEPARTMENT · 6,000 people · 2019
Highest in the ZIP: 2000 µg/L — SHIRLEY WATER DISTRICT · 4,165 people · 2019 | 2/3 | SYR4 |
| Copper | 1066 µg/L 82% of the EPA limit 1300 µg/L Main supplier: LANCASTER WATER DEPARTMENT · 6,000 people · 2016 | 3/3 | SYR4 |
| Arsenic | 22.5 µg/L 225% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the ZIP: LANCASTER WOODS CONDOMINIUMS · 120 people · 2019 | 2/3 | SYR4 |
| Lead | 22.2 µg/L 148% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: LANCASTER WATER DEPARTMENT · 6,000 people · 2016 | 1/3 | SYR4 |
| TTHM | 2.4245 µg/L 3% of the EPA limit 80 µg/L Main supplier: LANCASTER WATER DEPARTMENT · 6,000 people · 2019
Highest in the ZIP: 5.126 µg/L — SHIRLEY WATER DISTRICT · 4,165 people · 2019 | 3/3 | SYR4 |
| Barium | 3 µg/L 0.2% of the EPA limit 2000 µg/L Highest in the ZIP: SHIRLEY WATER DISTRICT · 4,165 people · 2017 | 1/3 | SYR4 |
| Dibromochloromethane | 1.1155 µg/L No EPA limit set Main supplier: LANCASTER WATER DEPARTMENT · 6,000 people · 2019
Highest in the ZIP: 2.414 µg/L — SHIRLEY WATER DISTRICT · 4,165 people · 2019 | 3/3 | SYR4 |
| Bromoform | 0.8955 µg/L No EPA limit set Main supplier: LANCASTER WATER DEPARTMENT · 6,000 people · 2019
Highest in the ZIP: 1.733 µg/L — SHIRLEY WATER DISTRICT · 4,165 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 0.5200 µg/L No EPA limit set Main supplier: LANCASTER WATER DEPARTMENT · 6,000 people · 2019
Highest in the ZIP: 1.31 µg/L — SHIRLEY WATER DISTRICT · 4,165 people · 2019 | 2/3 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L Highest in the ZIP: SHIRLEY WATER DISTRICT · 4,165 people · 2017 | 1/3 | SYR4 |
| Chloroform | 0.6200 µg/L No EPA limit set Highest in the ZIP: SHIRLEY WATER DISTRICT · 4,165 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0169 mg/L 113% above the EPA limit of 0.0150 mg/L Main supplier: LANCASTER WATER DEPARTMENT · 6,000 people · 2026 | 3/3 | LCR |
| Pfhxa | 0.0071 µg/L No EPA limit set Highest in the ZIP: SHIRLEY WATER DISTRICT · 4,165 people · 2025 | 1/3 | UCMR-5 |
| PFOA | 0.0069 µg/L No EPA limit set Highest in the ZIP: SHIRLEY WATER DISTRICT · 4,165 people · 2025 | 1/3 | UCMR-5 |
| Pfpea | 0.0052 µg/L No EPA limit set Highest in the ZIP: SHIRLEY WATER DISTRICT · 4,165 people · 2025 | 1/3 | UCMR-5 |
| Pfhpa | 0.0037 µg/L No EPA limit set Highest in the ZIP: SHIRLEY WATER DISTRICT · 4,165 people · 2025 | 1/3 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Highest in the ZIP: SHIRLEY WATER DISTRICT · 4,165 people · 2025 | 1/3 | 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 01523
| Supplier | State | Population served |
|---|---|---|
| LANCASTER WATER DEPARTMENT | MA | 6,000 |
| SHIRLEY WATER DISTRICT | MA | 4,165 |
| LANCASTER WOODS CONDOMINIUMS | MA | 120 |
Frequently asked questions about ZIP 01523 tap water
Is the tap water in ZIP 01523 safe to drink?
EPA testing detected 17 contaminants across the water suppliers serving ZIP 01523. 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 01523?
3 public water suppliers report EPA drinking-water monitoring for ZIP 01523. Each is listed above with its population served.
What contaminants are in ZIP 01523's water?
EPA monitoring detected Nitrate, Copper, Arsenic, Lead, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.