Dalapon
City of Norfolk
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
48
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.125 ppb | 8 | 1 | ND - 1.000 ppb |
| 2015 | 0.275 ppb | 8 | 2 | ND - 1.20 ppb |
| 2016 | 0.163 ppb | 8 | 1 | ND - 1.30 ppb |
| 2017 | ND | 8 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 8 | 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 |
|---|---|---|
| 2014-02-11 | 201402120483-CAH | ND |
| 2014-02-11 | 201402120489-CAH | ND |
| 2014-05-13 | 201405140546-CAH | ND |
| 2014-05-13 | 201405140544-CAH | ND |
| 2014-08-12 | 201408130296-CAH | 1.000 ppb |
| 2014-08-12 | 201408130294-CAH | ND |
| 2014-11-12 | 201411130833-CAH | ND |
| 2014-11-12 | 201411130557-CAH | ND |
| 2015-02-10 | 460260-EUROFINS | ND |
| 2015-02-10 | 460260-EUROFINS | ND |
| 2015-05-12 | 460260-EUROFINS | 1.20 ppb |
| 2015-05-12 | 460260-EUROFINS | ND |
| 2015-08-11 | 460260-EUROFINS | 1.000 ppb |
| 2015-08-11 | 460260-EUROFINS | ND |
| 2015-11-09 | 460260-EUROFINS | ND |
| 2015-11-09 | 460260-EUROFINS | ND |
| 2016-02-09 | 201602100120-CAH | ND |
| 2016-02-09 | 201602100122-CAH | ND |
| 2016-05-10 | 201605110161-CAH | ND |
| 2016-05-10 | 201605110160-CAH | ND |
| 2016-08-09 | 201608100233-CAH | 1.30 ppb |
| 2016-08-09 | 201608110693-CAH | ND |
| 2016-11-08 | 201611090228-CAH | ND |
| 2016-11-08 | 201611090230-CAH | ND |
| 2017-02-14 | 201702151127-CAH | ND |
| 2017-02-14 | 201702151042-CAH | ND |
| 2017-05-09 | 201705100872-CAH | ND |
| 2017-05-09 | 201705100790-CAH | ND |
| 2017-08-08 | 201708100347-CAH | ND |
| 2017-08-08 | 201708091172-CAH | ND |
| 2017-11-14 | 201711151069-CAH | ND |
| 2017-11-14 | 201711150304-CAH | ND |
| 2018-02-13 | 201802151032-CAH | ND |
| 2018-02-13 | 201802150969-CAH | ND |
| 2018-05-08 | 201805090974-CAH | ND |
| 2018-05-08 | 201805091234-CAH | ND |
| 2018-08-14 | 201808160459-CAH | ND |
| 2018-08-14 | 201808160579-CAH | ND |
| 2018-11-13 | 201811140123-CAH | ND |
| 2018-11-13 | 201811140388-CAH | ND |
| 2019-02-12 | 201902130366-CAH | ND |
| 2019-02-12 | 201902130449-CAH | ND |
| 2019-05-14 | 201905150501-CAH | ND |
| 2019-05-14 | 201905150578-CAH | ND |
| 2019-08-13 | 201908140712-CAH | ND |
| 2019-08-13 | 201908150787-CAH | ND |
| 2019-11-12 | 201911130679-CAH | ND |
| 2019-11-12 | 201911130523-CAH | ND |