Dalapon
Pendleton Water Association
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
22
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 | 28.9 ppb | 2 | 2 | 28.9 ppb |
| 2015 | 1.45 ppb | 4 | 2 | ND - 2.90 ppb |
| 2016 | 2.35 ppb | 4 | 4 | 1.60 ppb - 3.10 ppb |
| 2017 | 3.55 ppb | 4 | 4 | 3.30 ppb - 3.80 ppb |
| 2018 | 2.40 ppb | 4 | 4 | 1.70 ppb - 3.10 ppb |
| 2019 | 4.00 ppb | 4 | 4 | 1.90 ppb - 6.10 ppb |
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 |
|---|---|---|
| 2014-04-07 | AD90490 | 28.9 ppb |
| 2014-04-07 | AD90490 | 28.9 ppb |
| 2015-03-02 | 35177846003 | ND |
| 2015-03-02 | 35177846003 | ND |
| 2015-10-05 | 35210878002 | 2.90 ppb |
| 2015-10-05 | 35210878002 | 2.90 ppb |
| 2016-04-11 | 35239164002 | 1.60 ppb |
| 2016-04-11 | 35239164002 | 1.60 ppb |
| 2016-11-21 | 35279123008 | 3.10 ppb |
| 2016-11-21 | 35279123008 | 3.10 ppb |
| 2017-04-04 | 35304846003 | 3.80 ppb |
| 2017-04-04 | 35304846003 | 3.80 ppb |
| 2017-10-16 | 35343111001 | 3.30 ppb |
| 2017-10-16 | 35343111001 | 3.30 ppb |
| 2018-02-20 | 35375979001 | 1.70 ppb |
| 2018-02-20 | 35375979001 | 1.70 ppb |
| 2018-08-06 | 35409599001 | 3.10 ppb |
| 2018-08-06 | 35409599001 | 3.10 ppb |
| 2019-03-12 | 35454721001 | 1.90 ppb |
| 2019-03-12 | 35454721001 | 1.90 ppb |
| 2019-08-07 | 35488972001 | 6.10 ppb |
| 2019-08-07 | 35488972001 | 6.10 ppb |