Dalapon
Hearthstone Manor
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 | 0.850 ppb | 2 | 1 | ND - 1.70 ppb |
2016 | 1.21 ppb | 3 | 3 | 0.830 ppb - 1.70 ppb |
2017 | 0.542 ppb | 6 | 3 | ND - 1.40 ppb |
2018 | 0.772 ppb | 5 | 3 | ND - 1.80 ppb |
2019 | 0.260 ppb | 5 | 1 | ND - 1.30 ppb |
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 |
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