Dalapon
Lake Marian Resort
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
10
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 4 | 0 | ND |
| 2022 | 0.0500 ppb | 2 | 1 | ND - 0.1000 ppb |
| 2023 | ND | 4 | 0 | ND |
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 | Result |
|---|---|
| 2021-02-22 | ND |
| 2021-08-09 | ND |
| 2021-09-01 | ND |
| 2021-11-03 | ND |
| 2022-01-26 | 0.1000 ppb |
| 2022-08-17 | ND |
| 2023-02-08 | ND |
| 2023-06-20 | ND |
| 2023-07-18 | ND |
| 2023-10-16 | ND |