Know Your Environment. Protect Your Health.

Pentachlorophenol

Redmond Water Department

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

 

32

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
2021ND150ND
2022ND10ND
2023ND160ND

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
2021-05-112132295-SND
2021-05-112132264-SND
2021-05-182133712-SND
2021-05-182133726-SND
2021-05-182133715-SND
2021-06-022137359-SND
2021-06-022137357-SND
2021-06-092132299-SND
2021-08-252161792-SND
2021-08-252161787-SND
2021-08-252161788-SND
2021-08-252161791-SND
2021-08-252161794-SND
2021-08-252161795-SND
2021-08-252161793-SND
2022-08-1022-51468-SND
2023-07-1323-40863-SND
2023-07-1323-40887-SND
2023-07-1323-40884-SND
2023-07-1323-40886-SND
2023-07-1323-40885-SND
2023-07-1323-40883-SND
2023-07-1323-40882-SND
2023-07-1723-41527-SND
2023-10-2323-64744-SND
2023-10-2323-64754-SND
2023-10-2323-64753-SND
2023-10-2323-64752-SND
2023-10-2323-64746-SND
2023-10-2323-64743-SND
2023-10-2323-64748-SND
2023-10-2323-64750-SND