Dalapon
Central Bridge Water District
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
9
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 | 1.70 ppb | 1 | 1 | 1.70 ppb |
| 2019 | 0.800 ppb | 3 | 2 | ND - 1.20 ppb |
| 2020 | 1.40 ppb | 1 | 1 | 1.40 ppb |
| 2021 | 1.95 ppb | 2 | 2 | 1.50 ppb - 2.40 ppb |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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 | Lab ID | Result |
|---|---|---|
| 2018-07-26 | 7059654 | 1.70 ppb |
| 2019-03-27 | 7083677SOC | ND |
| 2019-07-18 | 7098147D | 1.20 ppb |
| 2019-07-18 | 7098147 | 1.20 ppb |
| 2020-07-15 | 70138424001 | 1.40 ppb |
| 2021-07-15 | 70180783DAL | 1.50 ppb |
| 2021-09-08 | 70186815001 | 2.40 ppb |
| 2022-11-16 | 221116043-001 SOCS | ND |
| 2023-08-09 | 230809087-003 | ND |