Know Your Environment. Protect Your Health.

Carbon tetrachloride

Dean Dale Special Utility District

NOTE: Dean Dale Special Utility District purchases water from City of Wichita Falls which is required to test for carbon tetrachloride. Sample information shown below was taken by City of Wichita Falls.

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND10ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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: Dean Dale Special Utility District purchases water from City of Wichita Falls which is required to test for carbon tetrachloride. Sample information shown below was taken by City of Wichita Falls.

Date Lab ID Result
2018-08-21Q1833473002ND
2018-11-14Q1846491001ND
2019-05-14Q1925075001ND
2019-08-19Q1956634012ND
2020-09-23Q2037767001ND
2020-11-10Q2044047001ND
2021-02-03Q2103346004ND
2021-08-16Q2121825003ND
2022-08-17Q2224340018ND
2022-08-17Q2224340023ND
2023-08-21Q2335127007ND
2023-08-21Q2335127009ND