What was found in Donaldsonville's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 2100 µg/L 21% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Copper | 1600 µg/L 123% of the EPA limit, in the worst sample — 1300 µg/L | 2/2 | SYR4 |
| Fluoride | 200 µg/L 5% of the EPA limit 4000 µg/L | 1/2 | SYR4 |
| TTHM | 186.2 µg/L 233% of the EPA limit, in the worst sample — 80 µg/L | 2/2 | SYR4 |
| Chloroform | 150 µg/L No EPA limit set | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 123.1 µg/L 205% of the EPA limit, in the worst sample — 60 µg/L | 2/2 | SYR4 |
| Trichloroacetic Acid | 64 µg/L No EPA limit set | 2/2 | SYR4 |
| Dichloroacetic Acid | 58.1 µg/L No EPA limit set | 2/2 | SYR4 |
| Barium | 56 µg/L 2.8% of the EPA limit 2000 µg/L | 1/2 | SYR4 |
| Dibromochloromethane | 44.67 µg/L No EPA limit set | 2/2 | SYR4 |
| Dalapon | 40.58 µg/L 20% of the EPA limit 200 µg/L | 1/2 | SYR4 |
| Lead | 40 µg/L 267% of the EPA limit, in the worst sample — 15 µg/L | 2/2 | SYR4 |
| Bromodichloromethane | 31 µg/L No EPA limit set | 2/2 | SYR4 |
| Monochloroacetic Acid | 20 µg/L No EPA limit set | 2/2 | SYR4 |
| Lithium | 13.1 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Bromoform | 8 µg/L No EPA limit set | 1/2 | SYR4 |
| Gross Beta Particle Activity | 4.65 pCi/L No EPA limit set | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.3 µg/L No EPA limit set | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.6 µg/L No EPA limit set | 2/2 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9800 µg/L 16% of the EPA limit 6 µg/L | 1/2 | SYR4 |
| Simazine | 0.8700 µg/L 22% of the EPA limit 4 µg/L | 1/2 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.7500 µg/L 0.2% of the EPA limit 400 µg/L | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.7360 pCi/L 15% of the EPA limit 5 pCi/L | 1/2 | SYR4 |
| Carbon Tetrachloride | 0.6000 µg/L 12% of the EPA limit 5 µg/L | 1/2 | SYR4 |
| Selenium | 0.5900 µg/L 1.2% of the EPA limit 50 µg/L | 1/2 | SYR4 |
| P-Dichlorobenzene | 0.5200 µg/L 0.7% of the EPA limit 75 µg/L | 1/2 | SYR4 |
| Atrazine | 0.2800 µg/L 9.3% of the EPA limit 3 µg/L | 1/2 | SYR4 |
| 2,4-D | 0.1000 µg/L 0.1% of the EPA limit 70 µg/L | 1/2 | SYR4 |
| Hexachlorocyclopentadiene | 0.0400 µg/L 0.1% of the EPA limit 50 µg/L | 1/2 | SYR4 |
| Pfba | 0.0067 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFBS | 0.0047 µg/L No EPA limit set | 1/2 | UCMR-5 |
| PFOS | 0.0045 µg/L No EPA limit set | 1/2 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L | 2/2 | LCR |
Water suppliers serving Donaldsonville
| Supplier | Population served |
|---|---|
| PARISH UTILITIES OF ASCENSION | 9,732 |
| ASCENSION CONSOLIDATED UTILITY DIST 1 | 2,229 |
Frequently asked questions about Donaldsonville tap water
Is Donaldsonville tap water safe to drink?
EPA testing detected 34 contaminants in the water serving Donaldsonville. 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 Donaldsonville?
2 public water suppliers report drinking-water monitoring for Donaldsonville, Louisiana to the EPA. Each is listed above with its population served.
What contaminants are in Donaldsonville's water?
The contaminants EPA monitoring detected in Donaldsonville include Nitrate-Nitrite, Copper, Fluoride, TTHM, Chloroform. The full list, with the highest level found 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.