Dalapon
Portsmouth Water Works
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
21
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 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 7 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 7 | 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 |
|---|---|---|
| 2017-01-25 | 39125-002 | ND |
| 2017-01-25 | 39125-003 | ND |
| 2017-01-25 | 39125-004 | ND |
| 2017-01-25 | 39125-005 | ND |
| 2017-01-25 | 39125-006 | ND |
| 2017-01-25 | 39125-001 | ND |
| 2017-08-01 | 1708-00583-001 | ND |
| 2018-02-08 | 43406-001 | ND |
| 2018-02-08 | 43406-003 | ND |
| 2018-02-08 | 43406-002 | ND |
| 2018-02-14 | 43453-003 | ND |
| 2018-02-14 | 43453-002 | ND |
| 2018-02-14 | 43453-001 | ND |
| 2018-08-30 | 1808-04207-001 | ND |
| 2019-01-29 | 1901-02588-001 | ND |
| 2019-01-29 | 1901-02591-001 | ND |
| 2019-01-29 | 1901-02594-001 | ND |
| 2019-01-29 | 1901-02596-001 | ND |
| 2019-01-29 | 1901-02597-001 | ND |
| 2019-01-29 | 1901-02601-001 | ND |
| 2019-08-15 | 1908-02440-001 | ND |