2,4,5-TP (Silvex)
Bogue Banks Water Corporation
2(2,4,5-trichlorophenoxy) propionic acid (2,4,5-TP or Silvex) is a cancer-causing herbicide banned in the U.S. in 1985 because of its toxicity. It is still detected as a groundwater contaminant in areas where it was sprayed or stored.
44
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 | 3 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 10 | 0 | ND |
| 2019 | ND | 16 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 3 ppb
The EWG Health Guideline of 3 ppb for 2,4,5-TP was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 50 ppb
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-05 | 8460-020514-WROS | ND |
| 2014-05-06 | 8460-050614-WROS | ND |
| 2014-08-13 | 8460-081314-WROS | ND |
| 2015-02-25 | ND | |
| 2015-02-25 | ND | |
| 2015-04-14 | ND | |
| 2015-04-27 | ND | |
| 2016-02-25 | 8460-022516-W10S | ND |
| 2016-04-21 | 8460-042116-W10S | ND |
| 2016-08-04 | 8460-080416-WH6S | ND |
| 2016-08-04 | 8460-080416-WH2S | ND |
| 2016-08-04 | 8460-080416-WH1S | ND |
| 2016-11-09 | 8460-110916-WH2S | ND |
| 2016-11-09 | 8460-110916-WH6S | ND |
| 2016-11-09 | 8460-110916-WH1S | ND |
| 2017-04-10 | 8460-041017-WROS | ND |
| 2017-07-11 | 8460-071117-WROS | ND |
| 2017-10-25 | 8460-102517-WROS | ND |
| 2018-01-23 | 8460-012318-WROS | ND |
| 2018-01-23 | 8460-012318-E07S | ND |
| 2018-01-23 | 8460-012318-E03S | ND |
| 2018-04-12 | 8460-041218-WROS | ND |
| 2018-04-16 | 8460-041618-E07S | ND |
| 2018-04-16 | 8460-041618-E03S | ND |
| 2018-07-12 | 8460-071218-WROS | ND |
| 2018-08-06 | 8460-080618-E03S | ND |
| 2018-10-17 | 8460-101718-WROS | ND |
| 2018-11-05 | 8460-110518-E03S | ND |
| 2019-01-07 | 8460-010719-WROS | ND |
| 2019-02-25 | 8460-022519-E03S | ND |
| 2019-02-25 | 8460-022519-W10S | ND |
| 2019-04-01 | 8460-040119-WROS | ND |
| 2019-05-06 | 8460-050619-E03S | ND |
| 2019-06-03 | 8460-060319-W10S | ND |
| 2019-07-16 | 8460-071619-WROS | ND |
| 2019-08-05 | 8460-080519-WH6S | ND |
| 2019-08-05 | 8460-080519-WH2S | ND |
| 2019-08-05 | 8460-080519-WH1S | ND |
| 2019-08-05 | 8460-080519-E03S | ND |
| 2019-11-04 | 8460-110419-WH6S | ND |
| 2019-11-04 | 8460-110419-E03S | ND |
| 2019-11-04 | 8460-110419-WH1S | ND |
| 2019-11-04 | 8460-110419-WH2S | ND |
| 2019-11-07 | 8460-110719-WROS | ND |