Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Waterbury Water Department

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

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND10ND
2020N/A00N/A
2021ND30ND
2022ND50ND
2023N/A00N/A

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
2018-10-17RWA200509564SOCRND
2018-10-17RWA200509566SOCRND
2018-10-17RWA200509568SOCRND
2018-10-18RWA200509712SOC2ND
2019-01-15RWA200518766SOC2ND
2021-09-14RWA300059421ND
2021-09-14RWA300059428ND
2021-09-14RWA300059435ND
2022-02-15300146398ND
2022-09-14RWA300244154ND
2022-09-15RWA300253094ND
2022-09-15RWA300253095ND
2022-09-15RWA300253096ND