Dalapon
Southeast
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
16
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 | ND | 2 | 0 | ND |
| 2015 | 2.10 ppb | 2 | 2 | 2.00 ppb - 2.20 ppb |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | 1.47 ppb | 7 | 6 | ND - 2.00 ppb |
| 2019 | 2.30 ppb | 5 | 5 | 1.50 ppb - 3.00 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 | Result |
|---|---|
| 2014-07-28 | ND |
| 2014-07-28 | ND |
| 2015-02-11 | 2.20 ppb |
| 2015-02-11 | 2.00 ppb |
| 2018-02-19 | 1.10 ppb |
| 2018-02-20 | 1.80 ppb |
| 2018-04-12 | ND |
| 2018-07-24 | 2.00 ppb |
| 2018-07-24 | 1.90 ppb |
| 2018-10-22 | 1.60 ppb |
| 2018-10-22 | 1.90 ppb |
| 2019-01-25 | 1.50 ppb |
| 2019-01-25 | 3.00 ppb |
| 2019-04-23 | 2.60 ppb |
| 2019-04-23 | 2.80 ppb |
| 2019-09-09 | 1.60 ppb |