Know Your Environment. Protect Your Health.

Benzene

Hollands Quarter Water Supply Corporation

NOTE: Hollands Quarter Water Supply Corporation purchases water from City of Carthage which is required to test for benzene. Sample information shown below was taken by City of Carthage.

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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

NOTE: Hollands Quarter Water Supply Corporation purchases water from City of Carthage which is required to test for benzene. Sample information shown below was taken by City of Carthage.

Date Lab ID Result
2018-08-23Q1833940002ND
2019-08-26Q1959262001ND
2020-09-22Q2037528001ND
2021-08-04Q2120439001ND
2022-08-22Q2224781001ND
2023-07-18Q2327981001ND