What was found in Newcastle'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-Nitrite | 300 µg/L 3% of the EPA limit 10000 µg/L Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Copper | 129.8 µg/L 10% of the EPA limit 1300 µg/L Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| TTHM | 55.86 µg/L 70% of the EPA limit 80 µg/L Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Chloroform | 46.03 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Lithium | 40 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2024 | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 35.67 µg/L 59% of the EPA limit 60 µg/L Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Barium | 19 µg/L 1% of the EPA limit 2000 µg/L Main supplier: NEWCASTLE · 7,900 people · 2017 | 1/1 | SYR4 |
| Dichloroacetic Acid | 17.46 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 16.2 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 15.215 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 10.075 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Lead | 10.015 µg/L 67% of the EPA limit 15 µg/L Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 5.6925 pCi/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2016 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.76 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.57 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.95 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0225 mg/L 150% above the EPA limit of 0.0150 mg/L Main supplier: NEWCASTLE · 7,900 people · 2026 | 1/1 | LCR |
| Hexachlorocyclopentadiene | 0.0200 µg/L 0% of the EPA limit 50 µg/L Main supplier: NEWCASTLE · 7,900 people · 2018 | 1/1 | SYR4 |
| Pfba | 0.0052 µg/L No EPA limit set Main supplier: NEWCASTLE · 7,900 people · 2023 | 1/1 | UCMR-5 |
Water suppliers serving Newcastle
| Supplier | Population served |
|---|---|
| NEWCASTLE | 7,900 |
Frequently asked questions about Newcastle tap water
Is Newcastle tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Newcastle. 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 Newcastle?
1 public water supplier report drinking-water monitoring for Newcastle, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Newcastle's water?
The contaminants EPA monitoring detected in Newcastle include Nitrate-Nitrite, Copper, TTHM, Chloroform, Lithium. 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.