Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Lexington & Joseph Harp Correctional Institution

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.

 

51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND300ND
2020ND70ND
2021ND90ND
2022ND40ND
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
2018-02-27SDWA-1240279-00ND
2019-01-15SDWA-1340138-00ND
2019-01-15SDWA-1340139-00ND
2019-01-15SDWA-1340140-00ND
2019-01-15SDWA-1340142-00ND
2019-01-15SDWA-1340143-00ND
2019-01-15SDWA-1340141-00ND
2019-02-26SDWA-1342977-00ND
2019-02-26SDWA-1342976-00ND
2019-02-26SDWA-1342975-00ND
2019-02-26SDWA-1342974-00ND
2019-02-26SDWA-1342973-00ND
2019-02-26SDWA-1342972-00ND
2019-05-06SDWA-1367730-00ND
2019-05-06SDWA-1367733-00ND
2019-05-06SDWA-1367732-00ND
2019-05-06SDWA-1367731-00ND
2019-05-06SDWA-1367729-00ND
2019-05-06SDWA-1367728-00ND
2019-08-13SDWA-1402245-00ND
2019-08-13SDWA-1402244-00ND
2019-08-13SDWA-1402243-00ND
2019-08-13SDWA-1402242-00ND
2019-08-13SDWA-1402241-00ND
2019-08-13SDWA-1402240-00ND
2019-11-06SDWA-1433599-00ND
2019-11-06SDWA-1433603-00ND
2019-11-06SDWA-1433602-00ND
2019-11-06SDWA-1433601-00ND
2019-11-06SDWA-1433600-00ND
2019-11-06SDWA-1433604-00ND
2020-02-11SDWA-1456207-00ND
2020-02-11SDWA-1456208-00ND
2020-02-11SDWA-1456206-00ND
2020-02-11SDWA-1456205-00ND
2020-02-11SDWA-1456204-00ND
2020-02-11SDWA-1456203-00ND
2020-09-22SDWA-1491817-00ND
2021-02-08SDWA-1531164-00ND
2021-02-24SDWA-1549477-00ND
2021-02-24SDWA-1549483-00ND
2021-02-24SDWA-1549487-00ND
2021-02-24SDWA-1549491-00ND
2021-02-24SDWA-1549495-00ND
2021-05-18SDWA-1578131-00ND
2021-09-13SDWA-1603804-00ND
2021-10-25SDWA-1640319-00ND
2022-03-21SDWA-1671219-00ND
2022-03-21SDWA-1671229-00ND
2022-03-21SDWA-1671235-00ND
2022-03-21SDWA-1671241-00ND