Dalapon
Yadkinville, Town of
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
26
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 | 0.157 ppb | 7 | 1 | ND - 1.10 ppb |
| 2015 | 0.200 ppb | 6 | 1 | ND - 1.20 ppb |
| 2016 | 0.400 ppb | 6 | 2 | ND - 1.20 ppb |
| 2017 | 0.867 ppb | 3 | 2 | ND - 1.60 ppb |
| 2018 | 1.000 ppb | 2 | 1 | ND - 2.00 ppb |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-01-16 | 92186672001SOCB | ND |
| 2014-01-16 | 92186672001 | ND |
| 2014-04-10 | 92197003004SOC | ND |
| 2014-07-08 | 92208205001SOC | 1.10 ppb |
| 2014-08-21 | 92214422001SOC | ND |
| 2014-10-09 | 92220793001SOC | ND |
| 2014-11-20 | C415203-01 | ND |
| 2015-02-12 | ND | |
| 2015-03-19 | ND | |
| 2015-05-21 | ND | |
| 2015-07-09 | 1.20 ppb | |
| 2015-08-27 | ND | |
| 2015-12-03 | ND | |
| 2016-01-06 | 92282225006SOC | 1.20 ppb |
| 2016-03-03 | 92288632002SOC | ND |
| 2016-04-07 | 92292969001SOC | ND |
| 2016-05-12 | 92297456002SOC | ND |
| 2016-07-07 | 92304344004SOC | 1.20 ppb |
| 2016-08-24 | 92310229002SOC | ND |
| 2017-07-06 | 92346740005SOC | 1.60 ppb |
| 2017-10-05 | 92358013006SOC | 1.000 ppb |
| 2017-11-16 | 92363796001SOC | ND |
| 2018-07-03 | 92390588003SOC | 2.00 ppb |
| 2018-11-08 | 92406563002SOC | ND |
| 2019-05-30 | 37729_19-22349A | ND |
| 2019-07-11 | 37729_19-29729 | ND |