What was found in Vienna'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 |
|---|---|---|---|
| Copper | 248.8 µg/L 19% of the EPA limit 1300 µg/L Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| TTHM | 72.93 µg/L 91% of the EPA limit 80 µg/L Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Chloroform | 51.455 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 50.725 µg/L 85% of the EPA limit 60 µg/L Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 27.225 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 23.17 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 17.475 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 6.395 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.98 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.2885 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Lead | 1.78 µg/L 12% of the EPA limit 15 µg/L Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.443 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.217 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0054 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0038 µg/L No EPA limit set Main supplier: VIENNA, TOWN OF · 27,134 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.00063 mg/L 4.2% of the EPA limit 0.0150 mg/L Main supplier: VIENNA, TOWN OF · 27,134 people · 2025 | 1/1 | LCR |
Water suppliers serving Vienna
| Supplier | Population served |
|---|---|
| VIENNA, TOWN OF | 27,134 |
Frequently asked questions about Vienna tap water
Is Vienna tap water safe to drink?
EPA testing detected 16 contaminants in the water serving Vienna. 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 Vienna?
1 public water supplier report drinking-water monitoring for Vienna, Virginia to the EPA. Each is listed above with its population served.
What contaminants are in Vienna's water?
The contaminants EPA monitoring detected in Vienna include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Dichloroacetic Acid. 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.