What was found in Oswego'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 |
|---|---|---|---|
| Fluoride | 800 µg/L 20% of the EPA limit 4000 µg/L Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Nitrate | 370 µg/L 3.7% of the EPA limit 10000 µg/L Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 365 µg/L 3.7% of the EPA limit 10000 µg/L Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Barium | 161.2 µg/L 8.1% of the EPA limit 2000 µg/L Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| TTHM | 69.4 µg/L 87% of the EPA limit 80 µg/L Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Cyanide | 45 µg/L 23% of the EPA limit 200 µg/L Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Chloroform | 40.6 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 25.4 µg/L 42% of the EPA limit 60 µg/L Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 18.6 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 13.95 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 10 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 8.14 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.39 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.725 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.885 µg/L 1.9% of the EPA limit 100 µg/L Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.88 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: OSWEGO CITY · 29,400 people · 2016 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.3 µg/L No EPA limit set Main supplier: OSWEGO CITY · 29,400 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0027 mg/L 18% of the EPA limit 0.0150 mg/L Main supplier: OSWEGO CITY · 29,400 people · 2022 | 1/1 | LCR |
Water suppliers serving Oswego
| Supplier | Population served |
|---|---|
| OSWEGO CITY | 29,400 |
Frequently asked questions about Oswego tap water
Is Oswego tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Oswego. 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 Oswego?
1 public water supplier report drinking-water monitoring for Oswego, New York to the EPA. Each is listed above with its population served.
What contaminants are in Oswego's water?
The contaminants EPA monitoring detected in Oswego include Fluoride, Nitrate, Nitrate-Nitrite, Barium, TTHM. 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.