Dalapon
Oil City Water Works
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
20
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 | 46.0 ppb | 2 | 2 | 46.0 ppb |
| 2015 | 0.550 ppb | 4 | 2 | ND - 1.10 ppb |
| 2016 | ND | 2 | 0 | ND |
| 2017 | 1.80 ppb | 4 | 4 | 1.40 ppb - 2.20 ppb |
| 2018 | 1.45 ppb | 4 | 2 | ND - 2.90 ppb |
| 2019 | 1.75 ppb | 4 | 2 | ND - 3.50 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 | AD90459 | 46.0 ppb |
| 2014-04-07 | AD90459 | 46.0 ppb |
| 2015-03-23 | 35181011002 | ND |
| 2015-03-23 | 35181011002 | ND |
| 2015-10-19 | 35212906003 | 1.10 ppb |
| 2015-10-19 | 35212906003 | 1.10 ppb |
| 2016-12-08 | 35282332003 | ND |
| 2016-12-08 | 35282332003 | ND |
| 2017-04-17 | 35307223005 | 2.20 ppb |
| 2017-04-17 | 35307223005 | 2.20 ppb |
| 2017-10-04 | 35341216003 | 1.40 ppb |
| 2017-10-04 | 35341216003 | 1.40 ppb |
| 2018-01-08 | 35367516001 | ND |
| 2018-01-08 | 35367516001 | ND |
| 2018-07-23 | 35407297001 | 2.90 ppb |
| 2018-07-23 | 35407297001 | 2.90 ppb |
| 2019-02-18 | 35449635001 | ND |
| 2019-02-18 | 35449635001 | ND |
| 2019-07-25 | 35485231001 | 3.50 ppb |
| 2019-07-25 | 35485231001 | 3.50 ppb |