Know Your Environment. Protect Your Health.

p-Dichlorobenzene

North Castle Water District #2

p-Dichlorobenzene is a carcinogenic insecticide used in mothballs, and added to deodorant blocks made for trash cans and toilets. Long-term exposure can cause liver damage and kidney problems.

 

20

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
2020ND70ND
2021ND30ND
2022ND30ND
2023ND70ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 6 ppb

The EWG Health Guideline of 6 ppb for p-dichlorobenzene 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): 75 ppb

The legal limit for p-dichlorobenzene, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1980s. This limit may not fully protect against the risk of cancer due to p-dichlorobenzene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2020-02-25AW03859-POCSND
2020-02-25AW03849-POCSND
2020-07-21AW13840-POCSND
2020-09-04AW17236-POCSND
2020-09-04AW17232-POCSND
2020-09-04AW17231-POCSND
2020-09-04AW17229-POCSND
2021-03-02AX04048-POCSND
2021-03-03AX04220-POCSND
2021-07-06AX13095-POCSND
2022-03-01AY03624-POCSND
2022-03-01AY03626-POCSND
2022-07-19AY12488-POCSND
2023-03-21AZ05021-POCSND
2023-03-21AZ05013-POCSND
2023-08-28AZ15886-POCSND
2023-09-05AZ16354-POCSND
2023-09-05AZ16356-POCSND
2023-09-05AZ16357-POCSND
2023-09-05AZ16353-POCSND