Dalapon
Washington Aqueduct Division.
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 8 | 0 | ND |
| 2016 | 0.325 ppb | 4 | 1 | ND - 1.30 ppb |
| 2017 | ND | 4 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2015-01-21 | 201501230219 | ND |
| 2015-01-21 | 201501230220 | ND |
| 2015-04-22 | 201504240323 | ND |
| 2015-04-22 | 201504240324 | ND |
| 2015-07-14 | 201507160690 | ND |
| 2015-07-14 | 201507160691 | ND |
| 2015-10-20 | 201510220411 | ND |
| 2015-10-20 | 201510220412 | ND |
| 2016-07-12 | 201605310010 | ND |
| 2016-07-12 | 201605310013 | 1.30 ppb |
| 2016-10-20 | 201608300117 | ND |
| 2016-10-24 | 201608300120 | ND |
| 2017-01-24 | 201701260453 | ND |
| 2017-01-24 | 201701260454 | ND |
| 2017-04-18 | 201703010005 | ND |
| 2017-04-18 | 201703010008 | ND |