Dalapon
Harris County Municipal Utility District 136
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 | 0.300 ppb | 5 | 1 | ND - 1.50 ppb |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 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 |
|---|---|---|
| 2014-02-17 | AC43051 | 1.50 ppb |
| 2014-06-09 | AC56294 | ND |
| 2014-06-09 | AC56245 | ND |
| 2014-07-30 | AC61627 | ND |
| 2014-11-19 | AC72462 | ND |
| 2015-02-26 | AC82053 | ND |
| 2015-05-19 | AC92537 | ND |
| 2015-08-04 | AD02316 | ND |
| 2015-10-08 | AD09990 | ND |
| 2016-02-01 | AD21036 | ND |
| 2016-04-26 | AD34162 | ND |
| 2016-09-24 | AD50993 | ND |
| 2016-10-17 | AD53386 | ND |
| 2017-01-24 | AD66423 | ND |
| 2017-01-24 | AD66553 | ND |
| 2017-04-18 | AD79937 | ND |
| 2017-07-24 | AD90279 | ND |
| 2017-10-17 | AE01067 | ND |
| 2018-02-08 | AE13013 | ND |
| 2018-05-08 | AE25558 | ND |
| 2018-08-01 | AE35289 | ND |
| 2018-10-24 | AE44467 | ND |
| 2019-01-28 | AE51613 | ND |
| 2019-04-23 | AE63368 | ND |
| 2019-07-30 | AE76386 | ND |
| 2019-10-10 | AE86289 | ND |