Dalapon
Waverly Water System
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
20
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 | 1.43 ppb | 6 | 4 | ND - 2.70 ppb |
| 2019 | 2.03 ppb | 3 | 3 | 1.20 ppb - 3.00 ppb |
| 2020 | 1.70 ppb | 3 | 3 | 1.50 ppb - 2.10 ppb |
| 2021 | ND | 4 | 0 | ND |
| 2022 | 1.50 ppb | 2 | 2 | 1.40 ppb - 1.60 ppb |
| 2023 | ND | 2 | 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 |
|---|---|
| 2018-03-06 | 2.40 ppb |
| 2018-03-06 | 1.50 ppb |
| 2018-05-02 | ND |
| 2018-06-06 | ND |
| 2018-08-13 | 2.70 ppb |
| 2018-10-23 | 2.00 ppb |
| 2019-03-18 | 1.90 ppb |
| 2019-06-05 | 3.00 ppb |
| 2019-09-09 | 1.20 ppb |
| 2020-05-28 | 2.10 ppb |
| 2020-07-28 | 1.50 ppb |
| 2020-07-28 | 1.50 ppb |
| 2021-03-08 | ND |
| 2021-03-08 | ND |
| 2021-06-16 | ND |
| 2021-09-13 | ND |
| 2022-05-31 | 1.60 ppb |
| 2022-09-20 | 1.40 ppb |
| 2023-06-05 | ND |
| 2023-08-21 | ND |