Dalapon
City of Nome
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
48
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 | 1.03 ppb | 8 | 3 | ND - 3.10 ppb |
| 2019 | ND | 9 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | 0.150 ppb | 8 | 1 | ND - 1.20 ppb |
| 2022 | 0.489 ppb | 9 | 2 | ND - 3.20 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 |
|---|---|---|
| 2018-01-25 | AE10524 | 3.10 ppb |
| 2018-01-25 | AE10511 | 2.20 ppb |
| 2018-04-10 | AE21847 | ND |
| 2018-04-10 | AE21846 | 2.90 ppb |
| 2018-07-16 | AE33519 | ND |
| 2018-07-16 | AE33523 | ND |
| 2018-10-24 | AE44477 | ND |
| 2018-10-24 | AE44480 | ND |
| 2019-02-26 | AE55926 | ND |
| 2019-02-26 | AE55929 | ND |
| 2019-02-26 | AE56064 | ND |
| 2019-06-05 | AE69441 | ND |
| 2019-06-05 | AE69443 | ND |
| 2019-08-22 | AE80198 | ND |
| 2019-08-22 | AE80199 | ND |
| 2019-12-17 | AE92559 | ND |
| 2019-12-17 | AE92561 | ND |
| 2020-02-12 | AE98103 | ND |
| 2020-02-12 | AE98105 | ND |
| 2020-05-28 | AF13080 | ND |
| 2020-05-28 | AF13083 | ND |
| 2020-11-23 | AF35427 | ND |
| 2020-11-23 | AF35428 | ND |
| 2021-03-24 | AF47993 | 1.20 ppb |
| 2021-03-24 | AF47992 | ND |
| 2021-05-27 | AF55762 | ND |
| 2021-05-27 | AF55763 | ND |
| 2021-08-25 | AF67893 | ND |
| 2021-08-25 | AF67894 | ND |
| 2021-11-04 | AF75714 | ND |
| 2021-11-04 | AF75719 | ND |
| 2022-02-01 | AF82942 | ND |
| 2022-02-24 | AF86251 | ND |
| 2022-02-24 | AF86252 | 3.20 ppb |
| 2022-05-03 | AF95297 | ND |
| 2022-05-03 | AF95298 | 1.20 ppb |
| 2022-09-28 | AG15237 | ND |
| 2022-09-28 | AG15238 | ND |
| 2022-12-13 | AG21640 | ND |
| 2022-12-13 | AG21641 | ND |
| 2023-02-06 | AG27438 | ND |
| 2023-02-06 | AG27446 | ND |
| 2023-05-09 | AG39697 | ND |
| 2023-05-09 | AG39698 | ND |
| 2023-09-08 | AG55536 | ND |
| 2023-09-08 | AG55542 | ND |
| 2023-11-29 | AG64777 | ND |
| 2023-11-29 | AG64778 | ND |