Know Your Environment. Protect Your Health.

2,4,5-TP (Silvex)

Collegeville Trappe Joint Public Works 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.

 

40

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
2020ND200ND
2021N/A00N/A
2022N/A00N/A
2023ND200ND

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
2020-05-0422213276.00ND
2020-05-0422213246.00ND
2020-05-0422213306.00ND
2020-05-1822213543.00ND
2020-05-1822213519.00ND
2020-05-1822213573.00ND
2020-05-1822213489.00ND
2020-06-0822414098.00ND
2020-06-0822414158.00ND
2020-06-0822414128.00ND
2020-08-0322797502.00ND
2020-08-0322797277.00ND
2020-08-0322797367.00ND
2020-08-0322797307.00ND
2020-08-0322797337.00ND
2020-08-1722797882.00ND
2020-08-1722797853.00ND
2020-08-1722797824.00ND
2020-08-1722797795.00ND
2020-08-1722797765.00ND
2023-04-1728700876.00ND
2023-04-1728700873.00ND
2023-04-1728700878.00ND
2023-04-1728700877.00ND
2023-04-1728700875.00ND
2023-04-1728700874.00ND
2023-05-0128898968.00ND
2023-05-0128898967.00ND
2023-05-0128898966.00ND
2023-05-0128898969.00ND
2023-07-2429495842.00ND
2023-07-2429495844.00ND
2023-07-2429495843.00ND
2023-07-2429495841.00ND
2023-07-2429495840.00ND
2023-08-0729495847.00ND
2023-08-0729495848.00ND
2023-08-0729495846.00ND
2023-08-0729495845.00ND
2023-08-2129496178.00ND