Dalapon
Richmond County Water System
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
23
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 | 1.40 ppb | 1 | 1 | 1.40 ppb |
| 2015 | ND | 4 | 0 | ND |
| 2016 | 0.240 ppb | 5 | 1 | ND - 1.20 ppb |
| 2017 | 0.820 ppb | 5 | 2 | ND - 2.10 ppb |
| 2018 | 1.60 ppb | 4 | 3 | ND - 2.80 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 |
|---|---|---|
| 2014-09-24 | 92218871001SOC | 1.40 ppb |
| 2015-03-20 | ND | |
| 2015-05-22 | ND | |
| 2015-08-20 | ND | |
| 2015-11-25 | ND | |
| 2016-03-24 | 92291353001SOC | ND |
| 2016-04-12 | 92293693006SOC | ND |
| 2016-07-12 | 92305035001SOC | ND |
| 2016-10-12 | 92315787001SOC | ND |
| 2016-11-15 | 92319768001SOC | 1.20 ppb |
| 2017-02-14 | 92330210002SOC | ND |
| 2017-05-23 | 92341750001SOC | 2.10 ppb |
| 2017-08-09 | 92350837001SOC | 2.00 ppb |
| 2017-10-16 | 92359499003SOC | ND |
| 2017-10-30 | 92361282001SOC | ND |
| 2018-02-13 | 92373634003SOC | 1.30 ppb |
| 2018-05-07 | 92383892001SOC | ND |
| 2018-08-21 | 92396574001SOC | 2.30 ppb |
| 2018-11-05 | 92406163001SOC | 2.80 ppb |
| 2019-01-29 | 92415667001_1271 | ND |
| 2019-04-01 | 92423665001_1271 | ND |
| 2019-09-25 | 92447313001_1271 | ND |
| 2019-11-13 | 92453849001_1271 | ND |