What was found in New Castle'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 | 4850 µg/L 49% of the EPA limit 10000 µg/L Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2019 | 1/2 | SYR4 |
| Fluoride | 200 µg/L 5% of the EPA limit 4000 µg/L Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2019 | 1/2 | SYR4 |
| Barium | 43.92 µg/L 2.2% of the EPA limit 2000 µg/L Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2019 | 1/2 | SYR4 |
| TTHM | 27.1 µg/L 34% of the EPA limit 80 µg/L Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019 | 2/2 | SYR4 |
| Chloroform | 22.1 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 10.135 µg/L 17% of the EPA limit 60 µg/L Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019
Highest in the city: 13.6 µg/L — YESHIVA FARM SETTLEMENT · 300 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 7.705 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 3.71 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019
Highest in the city: 4.36 µg/L — YESHIVA FARM SETTLEMENT · 300 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 1 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019
Highest in the city: 3.8 µg/L — YESHIVA FARM SETTLEMENT · 300 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 3.675 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 2.455 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019
Highest in the city: 3.52 µg/L — YESHIVA FARM SETTLEMENT · 300 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 2.85 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.5 pCi/L 17% of the EPA limit 15 pCi/L Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019 | 1/2 | SYR4 |
| Bromoform | 0.8150 µg/L No EPA limit set Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2019
Highest in the city: 0.9400 µg/L — YESHIVA FARM SETTLEMENT · 300 people · 2019 | 2/2 | SYR4 |
| PFOS | 0.1060 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| Pfpea | 0.1060 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| Pfhxa | 0.0690 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| PFHXS | 0.0516 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| Pfhpa | 0.0455 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| Pfba | 0.0305 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| PFOA | 0.0278 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| Pfpes | 0.0070 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| PFBS | 0.0061 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| PFNA | 0.0050 µg/L No EPA limit set Highest in the city: YESHIVA FARM SETTLEMENT · 300 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: NEW CASTLE/STANWOOD W.D. · 17,116 people · 2025
Highest in the city: 0.0022 mg/L — YESHIVA FARM SETTLEMENT · 300 people · 2027 | 2/2 | 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 New Castle
| Supplier | Population served |
|---|---|
| NEW CASTLE/STANWOOD W.D. | 17,116 |
| YESHIVA FARM SETTLEMENT | 300 |
Frequently asked questions about New Castle tap water
Is New Castle tap water safe to drink?
EPA testing detected 26 contaminants in the water serving New Castle. 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 New Castle?
2 public water suppliers report drinking-water monitoring for New Castle, New York to the EPA. Each is listed above with its population served.
What contaminants are in New Castle's water?
The contaminants EPA monitoring detected in New Castle include Nitrate, Fluoride, Barium, TTHM, Chloroform. 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.