Know Your Environment. Protect Your Health.

Carbon tetrachloride

Chalk Hill Special Utility District

Carbon tetrachloride, a volatile carcinogenic solvent, has been used in industrial chemical production and as a dry cleaning ingredient. Read More.

Carbon tetrachloride is no longer permitted in products intended for home use in the U.S. In the past, it was widely used as a dry cleaning ingredient, fire extinguishing chemical, pesticide and chemical intermediate for manufacturing refrigerants. Carbon tetrachloride does not break down easily and can remain in groundwater for years. In addition to increasing cancer risk, carbon tetrachloride harms the liver and causes central nervous system depression, irregular heart rate, and kidney damage. Maternal exposure to carbon tetrachloride in drinking water has been associated with a risk of birth defects.

Click here to read more about carcinogenic VOCs.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for carbon tetrachloride 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 carbon tetrachloride, established in 1987, was based on analytical detection limits at the time that the standard was set. This limit does not fully protect against the risk of cancer due to carbon tetrachloride exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2018-06-20Q1824487007ND
2018-06-20Q1824487009ND
2018-06-20Q1824487006ND
2019-01-10Q1901411003ND
2019-04-08Q1914000002ND
2019-04-08Q1914000005ND
2019-04-08Q1914000006ND
2020-03-23Q2012183003ND
2020-05-21Q2020369001ND
2020-12-17Q2050083008ND
2020-12-17Q2050083006ND
2021-11-09Q2131359012ND
2021-11-09Q2131359014ND
2021-11-09Q2131359016ND
2022-12-13Q2237298001ND
2022-12-13Q2237298003ND
2022-12-13Q2237298005ND
2023-03-20Q2310465003ND
2023-05-23Q2319409005ND
2023-05-23Q2319409007ND