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EWG's Tap Water Database — 2021 UPDATE

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Carbon tetrachloride

Naval Station, Newport

NOTE: Naval Station, Newport purchases water from City of Newport which is required to test for carbon tetrachloride. Sample information shown below was taken by City of Newport.

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.

MORE ABOUT THIS CONTAMINANT

 

50

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
2016ND20ND
2017ND100ND
2018ND80ND
2019ND80ND

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

NOTE: Naval Station, Newport purchases water from City of Newport which is required to test for carbon tetrachloride. Sample information shown below was taken by City of Newport.

Date Lab ID Result
2014-01-061401012-03_TO12ND
2014-01-061401012-08_TO12ND
2014-05-211402793-06_TO12ND
2014-05-211402793-05_TO12ND
2014-07-021403537-01_TO12ND
2014-07-021403537-05_TO12ND
2014-07-021403537-04_TO12ND
2014-07-021403537-03_TO12ND
2015-01-121501069-08_TO12ND
2015-01-121501069-03_TO12ND
2015-06-011502384-01_TO12ND
2015-06-011502384-02_TO12ND
2015-07-201503232-04_TO12ND
2015-07-201503232-06_TO12ND
2015-07-201503232-05_TO12ND
2015-07-201503232-03_TO12ND
2016-01-111600887-08_TO12ND
2016-01-111600887-02_TO12ND
2016-05-091602070-04_TO12ND
2016-05-091602070-05_TO12ND
2016-07-251603626-02_TO12ND
2016-07-251603626-04_TO12ND
2016-07-251603626-03_TO12ND
2016-07-251603626-01_TO12ND
2017-01-241701020-02_TO12ND
2017-01-251701027-06_TO12ND
2017-05-151702185-02_TO12ND
2017-05-151702185-01_TO12ND
2017-07-101703108-03_TO12ND
2017-07-101703108-02_TO12ND
2017-07-101703108-01_TO12ND
2017-07-101703108-04_TO12ND
2017-10-171710399-02_TO12ND
2017-10-171710399-01_TO12ND
2018-01-161800888-02_TO12ND
2018-01-221800936-07_TO12ND
2018-06-041802314-04_TO12ND
2018-06-041802314-05_TO12ND
2018-07-171803078-03_TO12ND
2018-07-171803078-05_TO12ND
2018-07-171803078-04_TO12ND
2018-07-171803078-02_TO12ND
2019-01-151900857-10_TO12ND
2019-01-151900857-11_TO12ND
2019-05-071901920-05_TO12ND
2019-05-071901920-06_TO12ND
2019-08-061903576-01_TO12ND
2019-08-061903576-03_TO12ND
2019-08-061903576-02_TO12ND
2019-08-291904072-02_TO12ND