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EWG's Tap Water Database — 2021 UPDATE

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Bromochloromethane

San Lorenzo Valley Water District

Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.

MORE ABOUT THIS CONTAMINANT

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND210ND
2015ND90ND
2016ND10ND
2017ND20ND
2018ND60ND
2019ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-21201401230101AMND
2014-01-21201401230103AMND
2014-01-22201401280188AMND
2014-01-22201401280185AMND
2014-01-27201401290321AMND
2014-01-28201401300126AMND
2014-01-28201401300128AMND
2014-03-199590-034-1300ND
2014-04-23201404250083AMND
2014-05-219590-034-1530ND
2014-07-09201407110262AMND
2014-07-09201407110260AMND
2014-07-15201407170536AMND
2014-07-16201407180201AMND
2014-07-16201407180184AMND
2014-07-16201407180199AMND
2014-07-16201407180197AMND
2014-08-279590-034-1140ND
2014-09-109590-025-1100ND
2014-10-14201410160335AMND
2014-11-189590-034-1200ND
2015-02-109590-034-1130ND
2015-05-209590-034-1445ND
2015-08-059590-034-1445ND
2015-08-059590-023-1430ND
2015-08-059590-024-1500ND
2015-08-199590-010-1400ND
2015-08-199590-022-1415ND
2015-08-199590-025-1445ND
2015-08-199590-026-1500ND
2016-07-149590-025-1055ND
2017-07-119590-025-0845ND
2017-08-029590-025-0900ND
2018-07-059590-025-1030ND
2018-07-059590-034-0915ND
2018-07-059590-026-1000ND
2018-07-189590-022-1045ND
2018-07-189590-010-1030ND
2018-08-149590-024-0830ND
2019-12-129590-025-0940ND