Dalapon
City of Horseshoe Bay
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
68
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 | 10 | 0 | ND |
| 2016 | ND | 12 | 0 | ND |
| 2017 | ND | 10 | 0 | ND |
| 2018 | 0.200 ppb | 10 | 2 | ND - 1.000 ppb |
| 2019 | ND | 16 | 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 |
|---|---|---|
| 2014-01-30 | AC40763 | ND |
| 2014-01-30 | AC40764 | ND |
| 2014-03-04 | AC45474 | ND |
| 2014-03-04 | AC45472 | ND |
| 2014-05-01 | AC52693 | ND |
| 2014-05-01 | AC52694 | ND |
| 2014-08-14 | AC63770 | ND |
| 2014-08-14 | AC63769 | ND |
| 2014-11-21 | AC72695 | ND |
| 2014-11-21 | AC72694 | ND |
| 2015-01-29 | AC78426 | ND |
| 2015-01-29 | AC78423 | ND |
| 2015-05-06 | AC90759 | ND |
| 2015-05-06 | AC90760 | ND |
| 2015-05-06 | AC90825 | ND |
| 2015-05-06 | AC90826 | ND |
| 2015-08-03 | AD02061 | ND |
| 2015-08-03 | AD02058 | ND |
| 2015-10-19 | AD10966 | ND |
| 2015-10-19 | AD10988 | ND |
| 2016-01-27 | AD20340 | ND |
| 2016-01-27 | AD20343 | ND |
| 2016-01-27 | AD20501 | ND |
| 2016-04-14 | AD33170 | ND |
| 2016-04-14 | AD33169 | ND |
| 2016-04-14 | AD33271 | ND |
| 2016-07-20 | AD45072 | ND |
| 2016-07-20 | AD44927 | ND |
| 2016-07-20 | AD44928 | ND |
| 2016-12-05 | AD60459 | ND |
| 2016-12-05 | AD60303 | ND |
| 2016-12-05 | AD60304 | ND |
| 2017-02-13 | AD70380 | ND |
| 2017-02-13 | AD70376 | ND |
| 2017-02-13 | AD70468 | ND |
| 2017-04-19 | AD80162 | ND |
| 2017-04-19 | AD80164 | ND |
| 2017-04-19 | AD80233 | ND |
| 2017-07-06 | AD88478 | ND |
| 2017-07-06 | AD88477 | ND |
| 2017-10-03 | AD99048 | ND |
| 2017-10-03 | AD99047 | ND |
| 2018-01-10 | AE08582 | ND |
| 2018-01-10 | AE08574 | ND |
| 2018-04-18 | AE22984 | ND |
| 2018-04-18 | AE22983 | ND |
| 2018-07-05 | AE32416 | ND |
| 2018-07-05 | AE32413 | ND |
| 2018-07-05 | AE32473 | ND |
| 2018-07-05 | AE32474 | ND |
| 2018-11-28 | AE47145 | 1.000 ppb |
| 2018-11-28 | AE47144 | 1.000 ppb |
| 2019-01-24 | AE51186 | ND |
| 2019-01-24 | AE51188 | ND |
| 2019-01-24 | AE51340 | ND |
| 2019-04-25 | AE63687 | ND |
| 2019-04-25 | AE63688 | ND |
| 2019-04-25 | AE63690 | ND |
| 2019-04-25 | AE63692 | ND |
| 2019-04-25 | AE63794 | ND |
| 2019-09-04 | AE81964 | ND |
| 2019-09-04 | AE81963 | ND |
| 2019-09-04 | AE81971 | ND |
| 2019-09-04 | AE81969 | ND |
| 2019-11-21 | AE90130 | ND |
| 2019-11-21 | AE90131 | ND |
| 2019-11-21 | AE90133 | ND |
| 2019-11-21 | AE90132 | ND |