Know Your Environment. Protect Your Health.

Pentachlorophenol

Chalk Hill Special Utility District

Pentachlorophenol is a carcinogenic chemical used as a wood preservative. It harms developing fetuses, and causes immune suppression and hormone disruption.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND30ND
2021ND10ND
2022ND10ND
2023ND50ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.3 ppb

The EWG Health Guideline of 0.3 ppb for pentachlorophenol 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 cancer.

EPA Maximum Contaminant
Level (MCL): 1 ppb

The legal limit for pentachlorophenol, established in 1991, was based on analytical detection limits at the time that the standard was set.

ppb = parts per billion

All test results

Date Lab ID Result
2018-06-20Q1824487002ND
2019-01-10Q1901411005ND
2020-03-23Q2012183002ND
2020-12-17Q2050083012ND
2020-12-17Q2050083013ND
2021-11-09Q2131359008ND
2022-12-13Q2237298010ND
2023-03-20Q2310465007ND
2023-05-23Q2319409001ND
2023-05-23Q2319409012ND
2023-07-27Q2330274001ND
2023-10-19Q2344966001ND