Dalapon
Wahpeton Water Supply
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
8
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 1.40 ppb | 1 | 1 | 1.40 ppb |
| 2019 | 1.000 ppb | 2 | 2 | 0.800 ppb - 1.20 ppb |
| 2020 | 1.60 ppb | 1 | 1 | 1.60 ppb |
| 2021 | 1.30 ppb | 1 | 1 | 1.30 ppb |
| 2022 | 1.35 ppb | 2 | 2 | 1.30 ppb - 1.40 ppb |
| 2023 | 1.50 ppb | 1 | 1 | 1.50 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 200 ppb
The legal limit for dalapon, established in 1992, was based on a toxicity study in laboratory animals published in 1960.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-09-10 | OE710574 | 1.40 ppb |
| 2019-08-13 | OE848653 | 1.20 ppb |
| 2019-08-13 | OE848655 | 0.800 ppb |
| 2020-07-27 | OE1142540 | 1.60 ppb |
| 2021-07-13 | OE1754810 | 1.30 ppb |
| 2022-07-13 | OE2133610 | 1.40 ppb |
| 2022-07-13 | OE2133624 | 1.30 ppb |
| 2023-08-01 | OE2315181 | 1.50 ppb |