Dalapon
Orange County Utilities Department (OCUD) - East
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
9
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 2 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | 0.560 ppb | 1 | 1 | 0.560 ppb |
2017 | 0.384 ppb | 6 | 3 | 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 |
---|---|
2014-06-17 | ND |
2014-08-13 | ND |
2016-10-03 | 0.560 ppb |
2017-02-28 | 0.702 ppb |
2017-03-02 | 0.299 ppb |
2017-05-17 | ND |
2017-05-17 | ND |
2017-08-16 | 1.30 ppb |
2017-08-16 | ND |