What was found in Greencastle's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 7400 µg/L 74% of the EPA limit 10000 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 7/7 | SYR4 |
| Xylenes, Total | 2300 µg/L 23% of the EPA limit 10000 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 1/7 | SYR4 |
| Fluoride | 146 µg/L 3.7% of the EPA limit 4000 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019
Highest in the city: 1190 µg/L — SUNNY SPOT APARTMENTS · 27 people · 2018 | 7/7 | SYR4 |
| Nitrite | 990 µg/L 99% of the EPA limit 1000 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 4/7 | SYR4 |
| Nitrate-Nitrite | 480 µg/L 4.8% of the EPA limit 10000 µg/L Highest in the city: SUNNY SPOT APARTMENTS · 27 people · 2016 | 1/7 | SYR4 |
| Copper | 391.95 µg/L 30% of the EPA limit 1300 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 7/7 | SYR4 |
| Barium | 70 µg/L 3.5% of the EPA limit 2000 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 4/7 | SYR4 |
| TTHM | 42.3 µg/L 53% of the EPA limit 80 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 7/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 35.255 µg/L 59% of the EPA limit 60 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 5/7 | SYR4 |
| Chloroform | 30.96 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 7/7 | SYR4 |
| Monochloroacetic Acid | 25.06 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 2/7 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 22.7 µg/L 378% of the EPA limit, at the 95th percentile of samples — 6 µg/L Highest in the city: ANTRIM TOWNSHIP MUNICIPAL AUTH · 1,149 people · 2019 | 2/7 | SYR4 |
| Dichloroacetic Acid | 20.12 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 5/7 | SYR4 |
| Lead | 9 µg/L 60% of the EPA limit 15 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019
Highest in the city: 12 µg/L — STATE LINE MHP · 65 people · 2019 | 6/7 | SYR4 |
| Chromium | 9.715 µg/L 9.7% of the EPA limit 100 µg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019
Highest in the city: 10.18 µg/L — SUNNY SPOT APARTMENTS · 27 people · 2018 | 4/7 | SYR4 |
| Bromodichloromethane | 8.7095 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019
Highest in the city: 10 µg/L — ANTRIM TOWNSHIP MUNICIPAL AUTH · 1,149 people · 2019 | 6/7 | SYR4 |
| Trichloroacetic Acid | 7.5 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 3/7 | SYR4 |
| Dibromochloromethane | 4 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019
Highest in the city: 5 µg/L — ANTRIM TOWNSHIP MUNICIPAL AUTH · 1,149 people · 2019 | 6/7 | SYR4 |
| Monobromoacetic Acid | 4.868 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 2/7 | SYR4 |
| Dibromoacetic Acid | 2.165 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019 | 2/7 | SYR4 |
| Bromoform | 0.8740 µg/L No EPA limit set Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2019
Highest in the city: 0.9590 µg/L — ANTRIM TOWNSHIP MUNICIPAL AUTH · 1,149 people · 2019 | 3/7 | SYR4 |
| Atrazine | 0.8800 µg/L 29% of the EPA limit 3 µg/L Highest in the city: GREEN GROVE TRAILER CT · 75 people · 2019 | 1/7 | SYR4 |
| Lead | 0.0052 mg/L 35% of the EPA limit 0.0150 mg/L Main supplier: GREENCASTLE AREA WATER AUTH · 5,500 people · 2025
Highest in the city: 0.0635 mg/L — HERITAGE HILLS RETIREMENT COMM · 57 people · 2007 | 6/7 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Greencastle
| Supplier | Population served |
|---|---|
| GREENCASTLE AREA WATER AUTH | 5,500 |
| ANTRIM TOWNSHIP MUNICIPAL AUTH | 1,149 |
| SHANGRI LA MHP | 86 |
| GREEN GROVE TRAILER CT | 75 |
| STATE LINE MHP | 65 |
| HERITAGE HILLS RETIREMENT COMM | 57 |
| SUNNY SPOT APARTMENTS | 27 |
Frequently asked questions about Greencastle tap water
Is Greencastle tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Greencastle. 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 Greencastle?
7 public water suppliers report drinking-water monitoring for Greencastle, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Greencastle's water?
The contaminants EPA monitoring detected in Greencastle include Nitrate, Xylenes, Total, Fluoride, Nitrite, Nitrate-Nitrite. The full list, with the level at the main supplier 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.