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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Carter Lake Water District

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

46

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
20150.500 ppb82ND - 2.00 ppb
2016ND80ND
2017ND80ND
20180.0625 ppb81ND - 0.500 ppb
2019ND80ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-032038330ND
2014-06-092055879ND
2014-09-162081885ND
2014-09-162081883ND
2014-12-172098193ND
2014-12-172098190ND
2015-03-16OE2214012.00 ppb
2015-03-16OE2214002.00 ppb
2015-06-22OE258345ND
2015-06-22OE258344ND
2015-09-23OE297454ND
2015-09-23OE297455ND
2015-12-21OE329413ND
2015-12-21OE329414ND
2016-03-24OE358667ND
2016-03-24OE358666ND
2016-06-20OE391566ND
2016-06-20OE391567ND
2016-09-21OE431785ND
2016-09-21OE431784ND
2016-12-14OE462146ND
2016-12-14OE462147ND
2017-03-13OE490386ND
2017-03-13OE490385ND
2017-06-06OE521198ND
2017-06-06OE521199ND
2017-09-06OE561779ND
2017-09-06OE561778ND
2017-10-17OE579804ND
2017-10-17OE579803ND
2018-03-21OE636272ND
2018-03-21OE636271ND
2018-06-28OE676886ND
2018-06-28OE676887ND
2018-09-13OE7132330.500 ppb
2018-09-13OE713234ND
2018-12-17OE751471ND
2018-12-17OE751472ND
2019-03-18OE782863ND
2019-03-18OE782864ND
2019-06-17OE822491ND
2019-06-17OE822492ND
2019-09-24OE870084ND
2019-09-24OE870085ND
2019-12-11OE904760ND
2019-12-11OE904759ND