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EWG's Tap Water Database — 2021 UPDATE

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Carbon tetrachloride

Santa Clarita Water Division

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

 

80

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND130ND
2015ND110ND
2016ND150ND
2017ND150ND
2018ND130ND
2019ND130ND

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
2014-06-112104-040-0855ND
2014-06-112104-002-1010ND
2014-06-112104-006-0950ND
2014-06-112104-007-0845ND
2014-06-112104-008-1035ND
2014-06-112104-009-1030ND
2014-06-112104-012-0955ND
2014-06-112104-013-1100ND
2014-06-112104-015-0920ND
2014-06-112104-014-1110ND
2014-06-112104-016-1025ND
2014-06-112104-025-1000ND
2014-06-112104-039-0830ND
2015-06-032104-019-0900ND
2015-06-032104-012-0825ND
2015-06-032104-016-0840ND
2015-06-032104-002-0950ND
2015-06-032104-039-1035ND
2015-06-032104-040-0905ND
2015-06-032104-015-0845ND
2015-06-032104-006-0945ND
2015-06-032104-007-0920ND
2015-06-102104-009-0845ND
2015-08-272104-025-0945ND
2016-01-299590-013-1110ND
2016-03-292104-014-1335ND
2016-06-012104-016-0850ND
2016-06-012104-019-0835ND
2016-06-012104-025-0940ND
2016-06-012104-039-1010ND
2016-06-012104-040-1030ND
2016-06-012104-014-1030ND
2016-06-012104-015-1040ND
2016-06-012104-002-0935ND
2016-06-012104-009-0900ND
2016-06-012104-012-0950ND
2016-06-012104-007-1020ND
2016-06-012104-006-0915ND
2016-06-012104-013-1020ND
2017-02-012104-008-0950ND
2017-06-082104-019-1000ND
2017-06-082104-039-0940ND
2017-06-082104-008-1145ND
2017-06-082104-025-1030ND
2017-06-082104-009-0945ND
2017-06-082104-007-0920ND
2017-06-082104-013-1030ND
2017-06-082104-014-1050ND
2017-06-082104-016-0950ND
2017-06-082104-012-1120ND
2017-06-082104-006-1115ND
2017-06-082104-015-1015ND
2017-10-042104-002-0849ND
2017-12-042104-040-1345ND
2018-06-062104-006-1000ND
2018-06-062104-002-1030ND
2018-06-062104-007-0840ND
2018-06-062104-040-0855ND
2018-06-062104-013-0900ND
2018-06-062104-008-1030ND
2018-06-062104-014-0920ND
2018-06-062104-025-1110ND
2018-06-062104-009-1015ND
2018-06-062104-012-1045ND
2018-06-062104-019-0845ND
2018-06-062104-039-0920ND
2018-06-062104-016-1010ND
2019-06-052104-009-0950ND
2019-06-052104-013-0902ND
2019-06-052104-014-0848ND
2019-06-052104-002-1125ND
2019-06-052104-012-1051ND
2019-06-052104-006-1135ND
2019-06-052104-016-0959ND
2019-06-052104-019-0834ND
2019-06-052104-040-0923ND
2019-06-052104-025-1037ND
2019-06-052104-008-1013ND
2019-06-052104-039-0905ND
2019-08-072104-007-0930ND