What was found in Tulsa'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 | 860 µg/L 8.6% of the EPA limit 10000 µg/L Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| Fluoride | 820 µg/L 21% of the EPA limit 4000 µg/L Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| Chlorite | 395.2 µg/L 40% of the EPA limit 1000 µg/L Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| Copper | 350 µg/L 27% of the EPA limit 1300 µg/L Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Barium | 65.6 µg/L 3.3% of the EPA limit 2000 µg/L Main supplier: TULSA · 413,000 people · 2012 | 1/3 | SYR4 |
| TTHM | 56.375 µg/L 70% of the EPA limit 80 µg/L Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Chloroform | 34 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 32.03 µg/L 53% of the EPA limit 60 µg/L Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Lead | 5.9875 µg/L 40% of the EPA limit 15 µg/L Main supplier: TULSA · 413,000 people · 2019
Highest in the city: 18.055 µg/L — CARRIAGE VILLAGE · 500 people · 2018 | 2/3 | SYR4 |
| Bromodichloromethane | 16.065 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 16 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 12.75 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 8.895 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 3.475 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 2.62 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 3/3 | SYR4 |
| Glyphosate | 2.2 µg/L 0.3% of the EPA limit 700 µg/L Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| Bromoform | 1.6 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 2/3 | SYR4 |
| Monobromoacetic Acid | 1.485 µg/L No EPA limit set Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| Atrazine | 0.4624 µg/L 15% of the EPA limit 3 µg/L Main supplier: TULSA · 413,000 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0012 mg/L 8% of the EPA limit 0.0150 mg/L Main supplier: TULSA · 413,000 people · 2025 | 3/3 | LCR |
Water suppliers serving Tulsa
| Supplier | Population served |
|---|---|
| TULSA | 413,000 |
| WATER IMPROVEMENT DISTRICT #3 | 2,475 |
| CARRIAGE VILLAGE | 500 |
Frequently asked questions about Tulsa tap water
Is Tulsa tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Tulsa. 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 Tulsa?
3 public water suppliers report drinking-water monitoring for Tulsa, Oklahoma to the EPA. Each is listed above with its population served.
What contaminants are in Tulsa's water?
The contaminants EPA monitoring detected in Tulsa include Nitrate-Nitrite, Fluoride, Chlorite, Copper, Barium. 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.