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EWG's Tap Water Database — 2019 UPDATE

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Polychlorinated biphenyls (PCBs)

York Water Company

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND20ND
2015N/A00N/A
2016N/A00N/A
2017ND160ND

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
2014-05-131417068ND
2014-08-191432334ND
2017-05-1516234632ND
2017-05-1516234633ND
2017-05-1516234631ND
2017-05-1516234630ND
2017-05-1516234629ND
2017-05-1516234628ND
2017-05-1516234627ND
2017-05-1516234625ND
2017-09-1516859716ND
2017-09-1516859718ND
2017-09-1516859719ND
2017-09-1516859720ND
2017-09-1516859721ND
2017-09-1516859722ND
2017-09-1516859723ND
2017-09-1516859724ND