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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Wapello Rural Water Assoc.

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

49

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.87 ppb1610ND - 5.60 ppb
20151.84 ppb168ND - 7.10 ppb
20161.96 ppb168ND - 4.40 ppb
20171.63 ppb168ND - 4.70 ppb
20181.31 ppb168ND - 3.00 ppb
20191.48 ppb168ND - 3.70 ppb

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
2014-01-2720312350.500 ppb
2014-01-2720312360.600 ppb
2014-01-2720312371.80 ppb
2014-01-2720312381.80 ppb
2014-04-0820438203.00 ppb
2014-04-082043821ND
2014-04-082043824ND
2014-04-0820449662.70 ppb
2014-07-072063761ND
2014-07-0720637624.90 ppb
2014-07-0720637634.30 ppb
2014-07-072063760ND
2014-10-152086443ND
2014-10-1520865485.60 ppb
2014-10-152086444ND
2014-10-1520864424.70 ppb
2015-01-26OE211572ND
2015-01-26OE2115733.40 ppb
2015-01-26OE211571ND
2015-01-26OE2115703.20 ppb
2015-04-13OE2308692.00 ppb
2015-04-13OE2308700.600 ppb
2015-04-13OE2308672.00 ppb
2015-04-13OE230868ND
2015-07-07OE264409ND
2015-07-07OE264410ND
2015-07-07OE264408ND
2015-07-07OE2644077.10 ppb
2015-10-06OE303009ND
2015-10-06OE3030065.50 ppb
2015-10-06OE303008ND
2015-10-06OE3030075.70 ppb
2016-01-21OE3374193.30 ppb
2016-01-21OE337421ND
2016-01-21OE337420ND
2016-01-21OE3374182.90 ppb
2016-04-11OE3648224.10 ppb
2016-04-11OE364824ND
2016-04-11OE364823ND
2016-04-11OE3648213.90 ppb
2016-07-05OE3971744.30 ppb
2016-07-05OE3971754.40 ppb
2016-07-05OE397177ND
2016-07-05OE397176ND
2016-10-24OE444535ND
2016-10-24OE4445374.30 ppb
2016-10-24OE4445384.20 ppb
2016-10-25OE444536ND
2017-01-23OE4735224.50 ppb
2017-01-23OE473523ND
2017-01-23OE473524ND
2017-01-23OE4735254.70 ppb
2017-04-10OE500418ND
2017-04-10OE500417ND
2017-04-10OE5004203.60 ppb
2017-04-10OE5004193.80 ppb
2017-07-19OE5403362.00 ppb
2017-07-19OE5403351.90 ppb
2017-07-19OE540334ND
2017-07-19OE540333ND
2017-10-23OE581683ND
2017-10-23OE581684ND
2017-10-23OE5816852.60 ppb
2017-10-23OE5816862.90 ppb
2018-01-17OE612080ND
2018-01-17OE612079ND
2018-01-17OE6120782.30 ppb
2018-01-17OE6120772.40 ppb
2018-04-09OE643953ND
2018-04-09OE6439522.60 ppb
2018-04-09OE6439512.80 ppb
2018-04-16OE646038ND
2018-07-09OE680921ND
2018-07-09OE680920ND
2018-07-09OE6809192.70 ppb
2018-07-09OE6809182.70 ppb
2018-10-23OE7309942.40 ppb
2018-10-23OE730995ND
2018-10-23OE730996ND
2018-10-23OE7309973.00 ppb
2019-01-15OE7610082.70 ppb
2019-01-15OE7610093.10 ppb
2019-01-15OE761010ND
2019-01-15OE761011ND
2019-04-15OE795097ND
2019-04-15OE7950991.90 ppb
2019-04-15OE7950981.80 ppb
2019-04-15OE795096ND
2019-07-16OE835793ND
2019-07-16OE8357953.60 ppb
2019-07-16OE835794ND
2019-07-16OE8357923.30 ppb
2019-10-15OE8801513.70 ppb
2019-10-15OE880150ND
2019-10-15OE8801493.60 ppb
2019-10-15OE880148ND