What was found in ZIP 17401
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 | 4934 µg/L 49% of the EPA limit 10000 µg/L Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Copper | 100 µg/L 7.7% of the EPA limit 1300 µg/L Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| TTHM | 46.12 µg/L 58% of the EPA limit 80 µg/L Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Chromium | 38 µg/L 38% of the EPA limit 100 µg/L Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Chloroform | 35.96 µg/L No EPA limit set Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 33.4 µg/L 56% of the EPA limit 60 µg/L Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Barium | 21.985 µg/L 1.1% of the EPA limit 2000 µg/L Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 21.66 µg/L No EPA limit set Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Lead | 21 µg/L 140% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 12.635 µg/L No EPA limit set Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 7.8 µg/L No EPA limit set Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.445 µg/L No EPA limit set Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 2.1 µg/L No EPA limit set Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.81 µg/L No EPA limit set Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.3 µg/L No EPA limit set Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Atrazine | 0.4160 µg/L 14% of the EPA limit 3 µg/L Main supplier: YORK WATER CO · 206,762 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: YORK WATER CO · 206,762 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 17401
| Supplier | State | Population served |
|---|---|---|
| YORK WATER CO | PA | 206,762 |
Frequently asked questions about ZIP 17401 tap water
Is the tap water in ZIP 17401 safe to drink?
EPA testing detected 17 contaminants across the water suppliers serving ZIP 17401. 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 17401?
1 public water supplier report EPA drinking-water monitoring for ZIP 17401. Each is listed above with its population served.
What contaminants are in ZIP 17401's water?
EPA monitoring detected Nitrate, Copper, TTHM, Chromium, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.