Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

East Lyme Water & Sewer Commission

NOTE: East Lyme Water & Sewer Commission purchases water from New London Department of Public Utilities which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by New London Department of Public Utilities.

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND100ND
2020ND40ND
2021ND40ND
2022ND30ND
2023ND20ND

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

NOTE: East Lyme Water & Sewer Commission purchases water from New London Department of Public Utilities which is required to test for 2,4,5-tp (silvex). Sample information shown below was taken by New London Department of Public Utilities.

Date Lab ID Result
2018-11-2928428SOCRND
2019-06-0629562SOC2ND
2019-09-2330083SOC2ND
2019-11-2030471SOCRND
2020-12-3032744SOCRND
2021-10-2734799SOCRND
2022-07-1336104SOC2ND
2022-09-1536580SOCRND
2022-10-0636622SOC2ND
2023-09-1438757SOCRND