Dalapon
Wilmington Water Department
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
13
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 | 0.629 ppb | 7 | 3 | ND - 2.20 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | 0.395 ppb | 2 | 1 | ND - 0.790 ppb |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-03-31 | 35133474005 | ND |
| 2014-06-30 | 35144528002 | ND |
| 2014-06-30 | 35144528003 | ND |
| 2014-09-29 | S590940 | 2.20 ppb |
| 2014-12-22 | 35169250010 | 1.10 ppb |
| 2014-12-22 | 35169250011 | 1.10 ppb |
| 2014-12-22 | 35169250012 | ND |
| 2016-12-09 | 2194830001 | 0.790 ppb |
| 2016-12-09 | 2194830002 | ND |
| 2019-09-11 | 4419068 | ND |
| 2019-09-11 | 4419069 | ND |
| 2019-12-06 | 4510938 | ND |
| 2019-12-06 | 4510939 | ND |