Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2008-12-01 → 2008-12-31 |
| TT | Health-based | Resolved | 2008-12-01 → 2008-12-31 |
| MCL | Health-based | Archived | 1993-10-01 → 1993-10-31 |
| MCL | Health-based | Resolved | 1993-09-01 → 1993-09-30 |
| MCL | Health-based | Resolved | 1993-09-01 → 1993-09-30 |
| MR | Monitoring | Resolved | 2020-06-01 → 2020-06-30 |
| MR | Monitoring | Resolved | 2020-06-01 → 2020-06-30 |
| MR | Monitoring | Resolved | 2010-10-01 → 2010-10-31 |
| MR | Monitoring | Resolved | 2010-10-01 → 2010-10-31 |
| MR | Monitoring | Resolved | 2010-10-01 → 2010-10-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 2100 µg/L 21% of the EPA limit 10000 µg/L | 44/44 | SYR4 | 2015–2017 |
| Nitrate-Nitrite | 2100 µg/L 21% of the EPA limit 10000 µg/L | 22/22 | SYR4 | 2015–2017 |
| Fluoride | 910 µg/L 23% of the EPA limit 4000 µg/L | 16/16 | SYR4 | 2015–2017 |
| Barium | 42 µg/L 2.1% of the EPA limit 2000 µg/L | 6/6 | SYR4 | 2015–2017 |
| Arsenic | 0.4000 µg/L 4% of the EPA limit 10 µg/L | 5/6 | SYR4 | 2015–2017 |
| Atrazine | 0.1600 µg/L 5.3% of the EPA limit 3 µg/L | 4/20 | SYR4 | 2015–2017 |
| Copper | 8 µg/L 0.6% of the EPA limit 1300 µg/L | 4/4 | SYR4 | 2015–2016 |
| Combined Radium (-226 And -228) | 0.4150 pCi/L 8.3% of the EPA limit 5 pCi/L | 3/3 | SYR4 | 2017 |
| Gross Beta Particle Activity | 1.6 pCi/L No EPA limit set | 3/3 | SYR4 | 2017 |
| TTHM | 56 µg/L 70% of the EPA limit 80 µg/L | 3/3 | SYR4 | 2017 |
| Total Haloacetic Acids (HAA5) | 44 µg/L 73% of the EPA limit 60 µg/L | 3/3 | SYR4 | 2017 |
| Lead | 0.0390 mg/L 260% above the EPA limit of 0.0150 mg/L | 2/2 | LCR | 1992 |
| Antimony, Total | 0.2000 µg/L 3.3% of the EPA limit 6 µg/L | 1/6 | SYR4 | 2015–2017 |
| Dalapon | 1.3 µg/L 0.7% of the EPA limit 200 µg/L | 1/16 | SYR4 | 2015–2017 |
| Gross Alpha, Excl. Radon And U | 0.2190 pCi/L 1.5% of the EPA limit 15 pCi/L | 1/1 | SYR4 | 2017 |
| Simazine | 0.0700 µg/L 1.8% of the EPA limit 4 µg/L | 1/20 | SYR4 | 2015–2017 |
58 contaminants tested, none detected
Utility contact
Frequently asked questions about Washington Aqueduct Division.
Is Washington Aqueduct Division. tap water safe to drink?
EPA monitoring detected 16 contaminants in Washington Aqueduct Division.'s water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Washington Aqueduct Division.'s water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Barium, Arsenic, and others. The full list with the level and data source for each is above.
How many people does Washington Aqueduct Division. serve?
Washington Aqueduct Division. reports serving 0 people in DC, per its EPA record.
Has Washington Aqueduct Division. had any water quality violations?
The EPA has 12 violations on file for Washington Aqueduct Division., of which 5 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.