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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Manitowoc Waterworks

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

 

66

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.138 ppb126ND - 0.520 ppb
20150.209 ppb96ND - 0.350 ppb
20160.109 ppb124ND - 0.380 ppb
20170.0892 ppb136ND - 0.260 ppb
20180.0491 ppb112ND - 0.270 ppb
20190.0500 ppb92ND - 0.240 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
2014-01-154010412-01ND
2014-01-154010412-02ND
2014-04-15780535ND
2014-04-157805360.190 ppb
2014-05-07784433ND
2014-05-077844490.170 ppb
2014-05-29793121ND
2014-06-11796115ND
2014-07-098019500.400 ppb
2014-07-098019490.520 ppb
2014-10-078238770.200 ppb
2014-10-078238780.180 ppb
2015-01-138387390.280 ppb
2015-01-138387400.310 ppb
2015-02-11843004ND
2015-04-138535870.280 ppb
2015-04-138535860.340 ppb
2015-07-138703890.350 ppb
2015-07-138703900.320 ppb
2015-10-07887860ND
2015-10-07887861ND
2016-01-11900895ND
2016-01-11900894ND
2016-02-16905609ND
2016-02-16905611ND
2016-03-01907356ND
2016-03-17910822ND
2016-04-12914952ND
2016-04-12914951ND
2016-07-119323470.330 ppb
2016-07-119323460.340 ppb
2016-10-139533110.260 ppb
2016-10-139533120.380 ppb
2017-01-119695030.220 ppb
2017-01-11969504ND
2017-03-081703641-001AND
2017-03-081703685-003A0.140 ppb
2017-03-081703685-001A0.130 ppb
2017-03-211703E78-001AND
2017-04-119825240.240 ppb
2017-04-119825250.260 ppb
2017-05-09987555ND
2017-07-171004334ND
2017-07-1710043350.170 ppb
2017-10-101023458ND
2017-10-101023457ND
2018-01-101036691ND
2018-01-101036692ND
2018-02-071040110ND
2018-02-071040112ND
2018-02-261042436ND
2018-04-101049489ND
2018-04-101049488ND
2018-07-091065576ND
2018-07-091065575ND
2018-10-0810857260.270 ppb
2018-10-0810857270.270 ppb
2019-01-141101004ND
2019-01-141101003ND
2019-02-131104964ND
2019-04-151115120ND
2019-04-151115119ND
2019-07-101133502ND
2019-07-101133501ND
2019-10-0811537040.210 ppb
2019-10-0811537030.240 ppb