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EWG's Tap Water Database — 2019 UPDATE

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Polychlorinated biphenyls (PCBs)

City of Grand Prairie

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.

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND30ND
2014ND50ND
2015ND100ND
2016ND60ND
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.09 ppb

The EWG 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.

EPA Maximum Contaminant
Level (MCL) 0.5 ppb

The legal limit for PCBs, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to PCB exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-03-071203255003ND
2012-03-071203255004ND
2012-03-071203255005ND
2012-08-131208543007ND
2012-08-131208543008ND
2012-08-131208543009ND
2013-02-191302571003ND
2013-02-191302571004ND
2013-04-291304A10006ND
2014-04-23Q1412991003ND
2014-06-04Q1419331003ND
2014-06-26Q1424023007ND
2014-06-26Q1424023042ND
2014-09-10Q1442991006ND
2015-03-11Q1509064003ND
2015-06-09Q1521042001ND
2015-06-09Q1521042002ND
2015-07-14Q1526936013ND
2015-07-14Q1526936012ND
2015-07-14Q1526936011ND
2015-07-14Q1526936010ND
2015-07-14Q1526936009ND
2015-10-07Q1539391001ND
2015-10-07Q1539391002ND
2016-01-14Q1601729001ND
2016-01-14Q1601729002ND
2016-03-01Q1608611001ND
2016-04-06Q1613635009ND
2016-07-14Q1628712003ND
2016-12-05Q1652555003ND
2017-01-05Q1700632003ND
2017-01-05Q1700632017ND
2017-06-27Q1726535001ND
2017-06-27Q1726535025ND
2017-06-27Q1726535026ND