Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Connecticut Water Company - Northern Region-Western 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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND10ND
2021ND10ND
2022ND160ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-01-31BZ82691SOCRND
2018-01-31BZ82950SOC2ND
2018-06-28CA80715SOC2ND
2018-07-26CA99050ND
2019-01-09SOC 200518249ND
2019-01-10SOCR 200518412ND
2019-01-10SOCR 200489130ND
2019-03-11SOC 200524185ND
2020-01-15SOCR 200563111ND
2021-03-05SOCR 200608709ND
2022-01-31CK26558ND
2022-02-01CK27434ND
2022-02-28CK76167ND
2022-04-18CL11075ND
2022-08-26CM16197ND
2022-08-26CM16200ND
2022-09-07CM25593ND
2022-09-08CM25670ND
2022-09-20CM37292ND
2022-09-20CM37296ND
2022-10-04CM49624ND
2022-10-04CM49621ND
2022-10-06CM51510ND
2022-10-06CM51504ND
2022-10-06CM50872ND
2022-11-03CM76536ND
2023-01-18CN25096ND