Dalapon
Orange County Utilities Department (OCUD) - South
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 | ND | 10 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | 0.563 ppb | 1 | 1 | 0.563 ppb |
| 2017 | 0.504 ppb | 10 | 5 | ND - 1.30 ppb |
| 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 | Result |
|---|---|
| 2014-04-14 | ND |
| 2014-04-14 | ND |
| 2014-04-14 | ND |
| 2014-04-15 | ND |
| 2014-04-15 | ND |
| 2014-07-14 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2014-07-15 | ND |
| 2015-07-16 | ND |
| 2016-07-18 | 0.563 ppb |
| 2017-03-02 | 1.30 ppb |
| 2017-03-02 | ND |
| 2017-03-02 | 1.30 ppb |
| 2017-03-02 | 0.550 ppb |
| 2017-03-02 | ND |
| 2017-07-25 | 1.10 ppb |
| 2017-07-25 | ND |
| 2017-07-25 | 0.786 ppb |
| 2017-07-26 | ND |
| 2017-07-26 | ND |