Dalapon
Arrowhead Lake & Frontier Lake
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 1 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 1 | 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 | Lab ID | Result |
---|---|---|
2014-08-07 | AC62608 | ND |
2015-08-13 | AD04048 | ND |
2015-12-09 | AD16333 | ND |
2015-12-09 | AD16341 | ND |
2016-06-21 | AD41336 | ND |
2017-06-09 | AD86989 | ND |
2018-07-10 | AE32858 | ND |
2018-07-10 | AE32857 | ND |
2018-07-10 | AE32800 | ND |
2019-09-17 | AE83552 | ND |