Know Your Environment. Protect Your Health.

p-Dichlorobenzene

Northwest Harris County Municipal Utility District 23

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND30ND
2020ND30ND
2021ND40ND
2022ND40ND
2023ND40ND

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
2018-01-11AE08956ND
2018-05-17AE26815ND
2018-07-12AE33153ND
2018-10-09AE42952ND
2019-01-31AE52467ND
2019-09-25AE84642ND
2019-11-07AE88933ND
2020-02-13AE98459ND
2020-08-13AF23542ND
2020-12-03AF36488ND
2021-03-09AF46016ND
2021-04-06AF49185ND
2021-08-12AF66123ND
2021-10-21AF74371ND
2022-02-03AF83333ND
2022-05-17AF97252ND
2022-07-21AG05793ND
2022-10-25AG18331ND
2023-01-12AG24446ND
2023-04-13AG36773ND
2023-08-17AG53066ND
2023-10-12AG59738ND