Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Bristol 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND10ND
2020ND50ND
2021ND20ND
2022ND10ND
2023ND50ND

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
2018-04-05D8D0436-01SOCRND
2018-07-09D8G0647-01SOCND
2019-03-27D9C2625-01SOCRND
2020-02-26D0B2110-01SOCND
2020-02-26D0B2110-02SOCND
2020-02-26D0B2110-03SOCND
2020-02-26D0B2110-04SOCND
2020-02-26D0B2111-01SOCRND
2021-02-25D1B2160-01SOCND
2021-02-25D1B2162-01SOCND
2022-02-03D2B0371-01SOCND
2023-02-23D3B2330-01SOCND
2023-03-06D3C0647-01SOCND
2023-03-06D3C0647-02SOCND
2023-03-06D3C0647-03SOCND
2023-03-15D3C1379-02SOCND