Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Horsham Water&sewer Authority

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023ND240ND

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
2023-02-0828520605.00ND
2023-02-0828520536.00ND
2023-02-1528520582.00ND
2023-02-1528520559.00ND
2023-03-0128520635.00ND
2023-03-0128520663.00ND
2023-04-1828899773.00ND
2023-04-1828899644.00ND
2023-04-1828900346.00ND
2023-04-1829107852.00ND
2023-04-1828899717.00ND
2023-04-1828899745.00ND
2023-07-2029496847.00ND
2023-07-2029496820.00ND
2023-07-2729496878.00ND
2023-07-2729496906.00ND
2023-08-1029699533.00ND
2023-08-1029699505.00ND
2023-10-2630071317.00ND
2023-10-2630071345.00ND
2023-10-2630070810.00ND
2023-10-2630071401.00ND
2023-10-2630070838.00ND
2023-10-2630071373.00ND