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EWG's Tap Water Database — 2019 UPDATE

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Carbon tetrachloride

Waukesha Water Utility

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND30ND
2014ND70ND
2015ND40ND
2016N/A00N/A
2017ND70ND

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
2012-03-20655059ND
2012-03-20655057ND
2012-05-22664036ND
2013-02-20706222ND
2013-02-20706220ND
2013-02-20706218ND
2014-03-26776755ND
2014-03-26776753ND
2014-05-07784425ND
2014-05-07784422ND
2014-05-07784419ND
2014-06-11796100ND
2014-06-11796103ND
2015-03-10847853ND
2015-03-10847851ND
2015-03-11847855ND
2015-09-29886380ND
2017-03-28980078ND
2017-03-28980084ND
2017-03-28980081ND
2017-05-02986361ND
2017-05-02986364ND
2017-05-31994537ND
2017-05-31994540ND