Know Your Environment. Protect Your Health.

Pentachlorophenol

Metropolitan District Commission

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

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND70ND
2019N/A00N/A
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

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
2018-06-27CA79476ND
2018-06-27CA79477ND
2018-06-27CA79475ND
2018-09-25CB38504ND
2018-09-25CB38505RND
2018-09-25CB38869ND
2018-09-25CB38505ND
2020-12-08SOC 200600638ND
2020-12-08SOC 200600609ND
2020-12-09SOC 200600592ND
2021-11-23S300107511 300107512ND
2021-11-23S300107593 300107595ND
2021-11-29S300109627 300109628ND
2022-12-15S300287039 300287043ND
2022-12-15S300287062 300287064ND
2022-12-15S300287090 300287092ND
2023-12-05S300456329 300456331ND
2023-12-06S300456308 300456310ND
2023-12-06S300456298 300456300ND