Dalapon
Houma Water Treatment Service Area
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 | 17.4 ppb | 2 | 2 | 17.4 ppb |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | 0.450 ppb | 4 | 2 | ND - 0.900 ppb |
| 2018 | 0.950 ppb | 4 | 2 | ND - 1.90 ppb |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-02-24 | AD89295 | 17.4 ppb |
| 2014-02-24 | AD89295 | 17.4 ppb |
| 2015-06-08 | 35192498003 | ND |
| 2015-06-08 | 35192498003 | ND |
| 2015-10-12 | 35212325001 | ND |
| 2015-10-12 | 35212325001 | ND |
| 2016-03-15 | 35234393004 | ND |
| 2016-03-15 | 35234393004 | ND |
| 2016-11-14 | 35277515004 | ND |
| 2016-11-14 | 35277515004 | ND |
| 2017-02-14 | 35295627002 | ND |
| 2017-02-14 | 35295627002 | ND |
| 2017-11-01 | 35345509001 | 0.900 ppb |
| 2017-11-01 | 35345509001 | 0.900 ppb |
| 2018-02-26 | 35377894002 | ND |
| 2018-02-26 | 35377894002 | ND |
| 2018-08-23 | 35413192001 | 1.90 ppb |
| 2018-08-23 | 35413192001 | 1.90 ppb |
| 2019-02-18 | 35449356001 | ND |
| 2019-02-18 | 35449356001 | ND |
| 2019-08-28 | 35494058001 | ND |
| 2019-08-28 | 35494058001 | ND |