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EWG's Tap Water Database — 2019 UPDATE

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Carbon tetrachloride

Sierra Madre Water Department

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND60ND
2014ND50ND
2015ND50ND
2016ND50ND
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2012-05-079588-007-0915ND
2012-05-079588-006-0935ND
2012-05-079588-005-0840ND
2012-05-079588-004-0855ND
2012-05-079588-003-0830ND
2013-05-219588-007-1000ND
2013-05-219588-006-0940ND
2013-05-219588-005-0910ND
2013-05-219588-004-0925ND
2013-06-263761-003-0800ND
2013-06-279588-003-0805ND
2014-05-129588-007-1125ND
2014-05-129588-006-1055ND
2014-05-129588-005-1105ND
2014-05-129588-004-1045ND
2014-05-129588-003-1030ND
2015-05-139588-007-0840ND
2015-05-139588-006-1020ND
2015-05-139588-005-0940ND
2015-05-139588-004-1000ND
2015-05-139588-003-1115ND
2016-05-039588-007-0920ND
2016-05-039588-006-0900ND
2016-05-039588-005-0830ND
2016-05-039588-004-0845ND
2016-05-039588-003-0815ND
2017-05-039588-007-1010ND
2017-05-039588-006-0940ND
2017-05-039588-005-0930ND
2017-05-039588-004-1045ND
2017-05-039588-003-1030ND