Know Your Environment. Protect Your Health.

Polychlorinated biphenyls (PCBs)

City of Pilot Point

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND40ND
2020ND10ND
2021ND50ND
2022ND10ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-03-15Q1810838014ND
2018-03-15Q1810838015ND
2018-03-15Q1810838016ND
2018-03-15Q1810838017ND
2018-03-15Q1810838013ND
2019-04-02Q1913162011ND
2019-05-30Q1930236012ND
2019-08-08Q1953061004ND
2019-10-24Q1973669003ND
2020-01-16Q2001732023ND
2021-11-09Q2131343001ND
2021-11-09Q2131343002ND
2021-11-09Q2131343003ND
2021-11-09Q2131343004ND
2021-11-09Q2131343005ND
2022-06-21Q2217164010ND
2023-11-06Q2347478004ND