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EWG's Tap Water Database

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Polychlorinated biphenyls (PCBs)

East Cherry Creek Valley Water and Sanitation District

PCBs are synthetic chemicals banned in the U.S. since the 1970s because of their toxicity. PCBs contaminate water by leaching from landfills and hazardous waste clean-up sites. PCBs increase the risk of cancer. Read More.

Up until the late 1970s, PCBs were used widely as coolants and lubricants in transformers, capacitors and other electrical equipment. Currently, PCBs are widely detected in the general population. They build up and are stored in fatty tissues and fluids such as breast milk, and can be passed on to fetuses and infants during pregnancy and breast-feeding. In human epidemiological studies, PCBs have been associated with an elevated risk of breast and prostate cancers. Infants and children with higher PCB exposures during development score lower on measures of neurological function, ranging from decreased IQ scores to reduced hearing sensitivity. PCBs also affect hormones and damage the immune system.

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011ND210ND
2012ND20ND
2013ND20ND
2014N/A00N/A
2015ND160ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.09 ppb

The health guideline of 0.09 ppb for PCBs 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 0.5 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Result
2011-05-18ND
2011-05-18ND
2011-06-08ND
2011-06-09ND
2011-06-09ND
2011-06-21ND
2011-06-21ND
2011-06-21ND
2011-06-22ND
2011-06-22ND
2011-10-13ND
2011-10-13ND
2011-10-13ND
2011-10-17ND
2011-10-17ND
2011-10-17ND
2011-10-17ND
2011-10-18ND
2011-10-18ND
2011-10-19ND
2011-10-19ND
2012-07-13ND
2012-10-25ND
2013-06-07ND
2013-12-05ND
2015-03-17ND
2015-03-17ND
2015-03-17ND
2015-03-17ND
2015-03-18ND
2015-03-18ND
2015-03-18ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2015-09-29ND