2,4,5-TP (Silvex)
Connecticut Water Company - Shoreline Region-chester System
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.
13
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 | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2014-01-29 | 140130CWCCSOC2 | ND |
| 2015-06-09 | BJ28007SOCR | ND |
| 2016-01-27 | BK58356SOCR | ND |
| 2016-05-04 | BN25257SOC2 | ND |
| 2016-07-12 | BN71472SOC2 | ND |
| 2016-07-19 | BN75759SOC2 | ND |
| 2017-06-12 | BY37361SOCR | ND |
| 2018-03-30 | CA11470SOCR | ND |
| 2019-03-11 | SOCR 200524293 | ND |
| 2019-05-08 | SOC 200531734 | ND |
| 2019-06-20 | SOC 200542693 | ND |
| 2019-07-16 | SOC 200540624 | ND |
| 2019-07-31 | SOC 200542502 | ND |