Dalapon
City of Granite Shoals
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
50
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 |
|---|---|---|---|---|
| 2018 | 0.800 ppb | 8 | 3 | ND - 2.60 ppb |
| 2019 | ND | 9 | 0 | ND |
| 2020 | ND | 8 | 0 | ND |
| 2021 | ND | 8 | 0 | ND |
| 2022 | 0.267 ppb | 9 | 2 | ND - 1.20 ppb |
| 2023 | ND | 8 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-01-23 | AE09822 | ND |
| 2018-01-23 | AE09821 | ND |
| 2018-05-17 | AE26727 | ND |
| 2018-05-17 | AE26726 | ND |
| 2018-09-17 | AE40216 | 2.60 ppb |
| 2018-09-17 | AE40218 | 2.50 ppb |
| 2018-11-29 | AE47365 | ND |
| 2018-11-29 | AE47366 | 1.30 ppb |
| 2019-03-13 | AE58217 | ND |
| 2019-03-13 | AE58219 | ND |
| 2019-05-16 | AE66810 | ND |
| 2019-05-16 | AE66811 | ND |
| 2019-05-16 | AE66933 | ND |
| 2019-09-04 | AE81967 | ND |
| 2019-09-04 | AE81965 | ND |
| 2019-12-11 | AE92124 | ND |
| 2019-12-11 | AE92126 | ND |
| 2020-01-27 | AE95300 | ND |
| 2020-01-27 | AE95307 | ND |
| 2020-04-14 | AF06549 | ND |
| 2020-04-14 | AF06554 | ND |
| 2020-07-06 | AF18098 | ND |
| 2020-07-06 | AF18100 | ND |
| 2020-11-03 | AF32913 | ND |
| 2020-11-03 | AF32914 | ND |
| 2021-03-11 | AF46475 | ND |
| 2021-03-11 | AF46477 | ND |
| 2021-05-20 | AF54729 | ND |
| 2021-05-20 | AF54730 | ND |
| 2021-08-24 | AF67620 | ND |
| 2021-08-24 | AF67621 | ND |
| 2021-11-04 | AF75747 | ND |
| 2021-11-04 | AF75751 | ND |
| 2022-03-07 | AF87611 | ND |
| 2022-03-07 | AF87614 | ND |
| 2022-03-07 | AF87645 | ND |
| 2022-05-24 | AF98228 | ND |
| 2022-05-24 | AF98232 | ND |
| 2022-08-16 | AG09390 | 1.20 ppb |
| 2022-08-16 | AG09392 | 1.20 ppb |
| 2022-11-14 | AG18628 | ND |
| 2022-11-14 | AG18630 | ND |
| 2023-03-15 | AG33082 | ND |
| 2023-03-15 | AG33083 | ND |
| 2023-06-07 | AG43458 | ND |
| 2023-06-07 | AG43473 | ND |
| 2023-07-31 | AG50543 | ND |
| 2023-07-31 | AG50583 | ND |
| 2023-10-19 | AG60418 | ND |
| 2023-10-19 | AG60422 | ND |