Dalapon
Thibodaux Waterworks
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
22
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 | 27.1 ppb | 2 | 2 | 27.1 ppb |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | 0.465 ppb | 4 | 2 | ND - 0.930 ppb |
| 2018 | 0.700 ppb | 4 | 2 | ND - 1.40 ppb |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-02-03 | AD88682 | 27.1 ppb |
| 2014-02-03 | AD88682 | 27.1 ppb |
| 2015-03-31 | 35181766004 | ND |
| 2015-03-31 | 35181766004 | ND |
| 2015-09-24 | 35208879008 | ND |
| 2015-09-24 | 35208879008 | ND |
| 2016-03-15 | 35234393006 | ND |
| 2016-03-15 | 35234393006 | ND |
| 2016-11-14 | 35277515001 | ND |
| 2016-11-14 | 35277515001 | ND |
| 2017-01-31 | 35292293004 | ND |
| 2017-01-31 | 35292293004 | ND |
| 2017-10-16 | 35342351005 | 0.930 ppb |
| 2017-10-16 | 35342351005 | 0.930 ppb |
| 2018-01-25 | 35370415010 | ND |
| 2018-01-25 | 35370415010 | ND |
| 2018-07-23 | 35406292001 | 1.40 ppb |
| 2018-07-23 | 35406292001 | 1.40 ppb |
| 2019-01-29 | 35445087001 | ND |
| 2019-01-29 | 35445087001 | ND |
| 2019-07-24 | 35484852001 | ND |
| 2019-07-24 | 35484852001 | ND |