Dalapon
Franklin Water Supply
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
19
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 | 0.327 ppb | 6 | 2 | ND - 0.980 ppb |
| 2019 | 0.550 ppb | 4 | 2 | ND - 1.10 ppb |
| 2020 | ND | 2 | 0 | ND |
| 2021 | 0.470 ppb | 2 | 2 | 0.410 ppb - 0.530 ppb |
| 2022 | ND | 3 | 0 | ND |
| 2023 | 0.290 ppb | 2 | 1 | ND - 0.580 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 |
|---|---|---|
| 2018-01-25 | 35370415004 | ND |
| 2018-01-25 | 35370415004 | ND |
| 2018-05-03 | 35390226001 | 0.980 ppb |
| 2018-05-03 | 35390226001 | 0.980 ppb |
| 2018-07-09 | 35403036001 | ND |
| 2018-07-09 | 35403036001 | ND |
| 2019-01-15 | 35442684001 | ND |
| 2019-01-15 | 35442684001 | ND |
| 2019-07-09 | 35480734001 | 1.10 ppb |
| 2019-07-09 | 35480734001 | 1.10 ppb |
| 2020-01-07 | 35522561001 | ND |
| 2020-09-28 | 35581275001 | ND |
| 2021-02-11 | 35611668001 | 0.410 ppb |
| 2021-11-30 | 35680898001 | 0.530 ppb |
| 2022-01-06 | 35688910 001 | ND |
| 2022-01-06 | 35688910001 | ND |
| 2022-07-28 | 35735504001 | ND |
| 2023-09-26 | 35830711001 | 0.580 ppb |
| 2023-10-09 | 35833396001 | ND |