What was found in York's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 11600 µg/L 116% of the EPA limit, in the worst sample — 10000 µg/L | 11/13 | SYR4 |
| Copper | 1840 µg/L 142% of the EPA limit, in the worst sample — 1300 µg/L | 12/13 | SYR4 |
| Fluoride | 900 µg/L 23% of the EPA limit 4000 µg/L | 5/13 | SYR4 |
| Barium | 700 µg/L 35% of the EPA limit 2000 µg/L | 12/13 | SYR4 |
| Lead | 640 µg/L 4267% of the EPA limit, in the worst sample — 15 µg/L | 9/13 | SYR4 |
| Nitrite | 200 µg/L 20% of the EPA limit 1000 µg/L | 1/13 | SYR4 |
| TTHM | 105 µg/L 131% of the EPA limit, in the worst sample — 80 µg/L | 9/13 | SYR4 |
| Chloroform | 97.1 µg/L No EPA limit set | 9/13 | SYR4 |
| Total Haloacetic Acids (HAA5) | 70.5 µg/L 118% of the EPA limit, in the worst sample — 60 µg/L | 7/13 | SYR4 |
| Lithium | 43.2 µg/L No EPA limit set | 1/13 | UCMR-5 |
| Chromium | 38 µg/L 38% of the EPA limit 100 µg/L | 6/13 | SYR4 |
| Dichloroacetic Acid | 24.3 µg/L No EPA limit set | 5/13 | SYR4 |
| Trichloroacetic Acid | 17.1 µg/L No EPA limit set | 6/13 | SYR4 |
| Bromodichloromethane | 16.3 µg/L No EPA limit set | 8/13 | SYR4 |
| Arsenic | 14 µg/L 140% of the EPA limit, in the worst sample — 10 µg/L | 5/13 | SYR4 |
| Selenium | 11 µg/L 22% of the EPA limit 50 µg/L | 2/13 | SYR4 |
| Combined Uranium | 6.3474 µg/L 21% of the EPA limit 30 µg/L | 4/13 | SYR4 |
| Dibromochloromethane | 6 µg/L No EPA limit set | 7/13 | SYR4 |
| Monochloroacetic Acid | 5 µg/L No EPA limit set | 3/13 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 3.4 µg/L 57% of the EPA limit 6 µg/L | 2/13 | SYR4 |
| Bromoform | 2 µg/L No EPA limit set | 4/13 | SYR4 |
| Monobromoacetic Acid | 1.9 µg/L No EPA limit set | 1/13 | SYR4 |
| Dibromoacetic Acid | 1.3 µg/L No EPA limit set | 3/13 | SYR4 |
| Dichloromethane | 1 µg/L 20% of the EPA limit 5 µg/L | 1/13 | SYR4 |
| Toluene | 0.6700 µg/L 0.1% of the EPA limit 1000 µg/L | 1/13 | SYR4 |
| Atrazine | 0.4200 µg/L 14% of the EPA limit 3 µg/L | 2/13 | SYR4 |
| Lead | 0.0820 mg/L 547% above the EPA limit of 0.0150 mg/L | 11/13 | LCR |
| PFOS | 0.0062 µg/L No EPA limit set | 1/13 | UCMR-5 |
| PFBS | 0.0048 µg/L No EPA limit set | 1/13 | UCMR-5 |
Water suppliers serving York
| Supplier | Population served |
|---|---|
| YORK WATER CO | 206,762 |
| WEST MANCHESTER TWP AUTH | 9,960 |
| FRANKLIN SYSTEM YORK WATER | 4,400 |
| AMBLEBROOK | 450 |
| WILLIAMS GROVE MHP | 282 |
| WESTERN CUMBERLAND WATER SYS | 275 |
| CARROLL VALLEY WATER SYSTEM | 267 |
| MT VIEW TERRACE MHP | 179 |
| EASTERN CUMBERLAND WATER SYS | 150 |
| COUNTRY VIEW MANOR YWC | 125 |
| HOUSTON RUN COMMUNITY | 50 |
| ZEIGLER MHP | 46 |
| WHERLEY PARK | 34 |
Frequently asked questions about York tap water
Is York tap water safe to drink?
EPA testing detected 29 contaminants in the water serving York. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve York?
13 public water suppliers report drinking-water monitoring for York, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in York's water?
The contaminants EPA monitoring detected in York include Nitrate, Copper, Fluoride, Barium, Lead. The full list, with the highest level found and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.