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.
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 |
|---|---|---|---|---|
| 2014 | ND | 8 | 0 | ND |
| 2015 | 1.36 ppb | 8 | 3 | ND - 4.60 ppb |
| 2016 | 2.79 ppb | 9 | 9 | 1.10 ppb - 5.90 ppb |
| 2017 | 2.79 ppb | 8 | 7 | ND - 5.20 ppb |
| 2018 | 1.03 ppb | 8 | 3 | ND - 3.10 ppb |
| 2019 | ND | 9 | 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 |
|---|---|---|
| 2014-02-18 | AC43310 | ND |
| 2014-02-18 | AC43315 | ND |
| 2014-06-03 | AC55867 | ND |
| 2014-06-03 | AC55884 | ND |
| 2014-09-18 | AC67478 | ND |
| 2014-09-18 | AC67485 | ND |
| 2014-12-12 | AC74874 | ND |
| 2014-12-12 | AC74872 | ND |
| 2015-03-25 | AC86024 | ND |
| 2015-03-25 | AC86025 | ND |
| 2015-06-23 | AC97084 | ND |
| 2015-06-23 | AC97100 | ND |
| 2015-09-25 | AD08695 | 2.50 ppb |
| 2015-09-25 | AD08708 | ND |
| 2015-12-15 | AD17041 | 3.80 ppb |
| 2015-12-15 | AD17040 | 4.60 ppb |
| 2016-02-01 | AD21027 | 1.20 ppb |
| 2016-02-01 | AD21024 | 5.10 ppb |
| 2016-02-01 | AD21192 | 1.50 ppb |
| 2016-06-16 | AD40928 | 5.90 ppb |
| 2016-06-16 | AD40966 | 5.40 ppb |
| 2016-09-30 | AD52263 | 1.10 ppb |
| 2016-10-27 | AD55085 | 2.10 ppb |
| 2016-12-13 | AD62153 | 1.60 ppb |
| 2016-12-13 | AD62151 | 1.20 ppb |
| 2017-02-28 | AD72403 | 2.00 ppb |
| 2017-02-28 | AD72405 | 2.00 ppb |
| 2017-05-09 | AD83287 | 5.20 ppb |
| 2017-05-09 | AD83298 | 3.10 ppb |
| 2017-08-24 | AD94147 | 1.000 ppb |
| 2017-08-24 | AD94143 | ND |
| 2017-11-20 | AE05374 | 4.30 ppb |
| 2017-11-20 | AE05380 | 4.70 ppb |
| 2018-01-25 | AE10524 | 3.10 ppb |
| 2018-01-25 | AE10511 | 2.20 ppb |
| 2018-04-10 | AE21846 | 2.90 ppb |
| 2018-04-10 | AE21847 | ND |
| 2018-07-16 | AE33519 | ND |
| 2018-07-16 | AE33523 | ND |
| 2018-10-24 | AE44477 | ND |
| 2018-10-24 | AE44480 | ND |
| 2019-02-26 | AE55929 | ND |
| 2019-02-26 | AE55926 | ND |
| 2019-02-26 | AE56064 | ND |
| 2019-06-05 | AE69441 | ND |
| 2019-06-05 | AE69443 | ND |
| 2019-08-22 | AE80199 | ND |
| 2019-08-22 | AE80198 | ND |
| 2019-12-17 | AE92561 | ND |
| 2019-12-17 | AE92559 | ND |