Know Your Environment. Protect Your Health.

Benzene

Old Chisolm Estates

Benzene is a known human carcinogen. It also damages blood cells and the nervous system. Emissions from petroleum processing, hazardous waste landfills and underground storage tanks contaminate drinking water with benzene. Read More.

To protect against cancer risks, California set a public health goal for benzene in drinking water at 0.15 parts per billion, 30 times lower than the federal legal limit of 5 parts per billion.

Click here to read more about carcinogenic VOCs.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND10ND
2022ND30ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.15 ppb

The EWG Health Guideline of 0.15 ppb for benzene 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): 5 ppb

The legal limit for benzene, established in 1987, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to benzene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2018-12-04Q1849246002ND
2018-12-13Q1851544011ND
2018-12-13Q1851544012ND
2019-06-06Q1932776002ND
2019-06-06Q1932776004ND
2019-11-21Q1977813003ND
2020-12-17Q2050037007ND
2020-12-17Q2050037009ND
2020-12-17Q2050037011ND
2021-12-09Q2134743004ND
2022-10-26Q2232462003ND
2022-10-26Q2232462005ND
2022-10-26Q2232462007ND
2023-08-15Q2334056001ND
2023-08-15Q2334056003ND