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EWG's Tap Water Database — 2019 UPDATE

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Carbon tetrachloride

Newhall CWD-Newhall

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND80ND
2014ND70ND
2015ND80ND
2016ND80ND
2017ND90ND

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
2012-02-099590-006-1037ND
2012-02-099590-007-1017ND
2012-04-129590-007-1150ND
2012-04-129590-006-0830ND
2012-07-129590-006-1012ND
2012-07-129590-007-0950ND
2012-10-119590-006-1100ND
2012-10-119590-007-1109ND
2013-01-109590-007-0940ND
2013-01-109590-006-0925ND
2013-04-119590-007-0901ND
2013-04-119590-006-0841ND
2013-07-119590-007-0925ND
2013-07-119590-006-0912ND
2013-10-109590-007-1205ND
2013-10-109590-006-1140ND
2014-01-169590-007-1105ND
2014-04-109590-007-0936ND
2014-05-299590-006-0955ND
2014-07-179590-007-0850ND
2014-07-179590-006-0825ND
2014-10-139590-007-1037ND
2014-10-139590-006-1005ND
2015-01-159590-007-0925ND
2015-01-159590-006-1023ND
2015-04-239590-006-1100ND
2015-04-239590-007-1118ND
2015-07-169590-006-0910ND
2015-07-169590-007-0925ND
2015-10-159590-006-0920ND
2015-10-159590-007-0930ND
2016-01-079590-006-0855ND
2016-01-079590-007-0930ND
2016-04-149590-007-1055ND
2016-04-149590-006-1115ND
2016-07-219590-007-0815ND
2016-07-219590-006-0858ND
2016-10-069590-007-1115ND
2016-10-069590-006-1045ND
2017-01-129590-006-0855ND
2017-02-239590-007-1155ND
2017-04-139590-007-0911ND
2017-04-139590-007-0900ND
2017-04-139590-006-0940ND
2017-04-139590-006-0930ND
2017-07-139590-006-0840ND
2017-07-139590-007-1000ND
2017-10-199590-007-0945ND