Dalapon
Leon Water Supply
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
7
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 | 2.20 ppb | 1 | 1 | 2.20 ppb |
| 2015 | 1.30 ppb | 1 | 1 | 1.30 ppb |
| 2016 | 1.45 ppb | 2 | 2 | 1.30 ppb - 1.60 ppb |
| 2017 | 1.10 ppb | 1 | 1 | 1.10 ppb |
| 2018 | 0.800 ppb | 1 | 1 | 0.800 ppb |
| 2019 | 0.600 ppb | 1 | 1 | 0.600 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 |
|---|---|---|
| 2014-05-02 | 2048415 | 2.20 ppb |
| 2015-05-04 | OE238721 | 1.30 ppb |
| 2016-04-04 | OE361732 | 1.30 ppb |
| 2016-04-05 | OE362298 | 1.60 ppb |
| 2017-04-03 | OE497449 | 1.10 ppb |
| 2018-04-02 | OE640310 | 0.800 ppb |
| 2019-06-04 | OE816472 | 0.600 ppb |