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EWG's Tap Water Database — 2019 UPDATE

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Carbon tetrachloride

Aqua Pa Uwchlan

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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2012-02-06AD37757ND
2012-02-06AD37758ND
2012-02-23AD39504ND
2012-02-23AD39503ND
2012-02-29AD39501ND
2012-05-25AD49447ND
2013-02-05AD79498ND
2013-02-05AD79499ND
2013-02-20AD80828ND
2013-02-20AD80829ND
2013-03-05AD82342ND
2013-05-21AD90752ND
2014-02-06AE22430ND
2014-02-14AE22385ND
2014-02-14AE22387ND
2014-02-21AE23946ND
2014-02-21AE23943ND
2014-04-23AE29861ND
2015-02-0312395460ND
2015-02-0312395544ND
2015-02-0312395502ND
2015-02-0312395523ND
2015-02-0412395439ND
2015-02-0412395481ND
2016-01-2213746221ND
2016-01-2213746242ND
2016-01-2213746263ND
2016-01-2213746284ND
2016-02-1013864188ND
2016-02-1013864209ND
2017-03-2815787961ND
2017-03-2815787982ND
2017-04-1915928768ND
2017-04-1915928789ND
2017-04-2115928747ND
2017-06-2116249812ND