Dalapon
North Table Mountain WSD
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
12
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | 0.733 ppb | 3 | 1 | ND - 2.20 ppb |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|
| 2015-05-18 | ND |
| 2015-08-25 | ND |
| 2017-04-17 | 2.20 ppb |
| 2017-07-25 | ND |
| 2017-10-26 | ND |
| 2018-01-25 | ND |
| 2018-04-26 | ND |
| 2018-07-02 | ND |
| 2018-10-29 | ND |
| 2019-01-24 | ND |
| 2019-04-29 | ND |
| 2019-07-29 | ND |