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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Portageville PWS

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

 

77

Samples

0

Samples exceeding legal limit (MCL)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND170ND
20150.0965 ppb173ND - 0.550 ppb
20160.123 ppb163ND - 0.730 ppb
20170.101 ppb173ND - 0.600 ppb
20180.510 ppb54ND - 0.800 ppb
20190.124 ppb51ND - 0.620 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
2014-01-29AC17628ND
2014-01-29AC17629ND
2014-01-29AC17630ND
2014-01-29AC17627ND
2014-04-23AC22472ND
2014-04-23AC22473ND
2014-04-23AC22474ND
2014-04-23AC22475ND
2014-07-23AC30035ND
2014-07-23AC30037ND
2014-07-23AC30036ND
2014-07-23AC30034ND
2014-08-25AC33304ND
2014-10-27AC37288ND
2014-10-27AC37289ND
2014-10-27AC37290ND
2014-10-27AC37291ND
2015-01-28AC41341ND
2015-01-28AC41342ND
2015-01-28AC41343ND
2015-01-28AC41344ND
2015-04-28AC457600.540 ppb
2015-04-28AC45758ND
2015-04-28AC45757ND
2015-04-28AC45759ND
2015-07-29AC55431ND
2015-07-29AC55430ND
2015-07-29AC55428ND
2015-07-29AC554290.550 ppb
2015-08-19AC574180.550 ppb
2015-10-28AC61957ND
2015-10-28AC61955ND
2015-10-28AC61956ND
2015-10-28AC61958ND
2016-01-28AC65727ND
2016-01-28AC65728ND
2016-01-28AC65729ND
2016-01-28AC65726ND
2016-04-26AC700200.530 ppb
2016-04-26AC70021ND
2016-04-26AC70023ND
2016-07-22AC798050.730 ppb
2016-08-01AC80719ND
2016-08-01AC80721ND
2016-08-01AC80720ND
2016-08-01AC807180.710 ppb
2016-10-20AC85965ND
2016-10-20AC85966ND
2016-10-20AC85967ND
2016-10-20AC85968ND
2017-01-20AC89844ND
2017-01-20AC89843ND
2017-01-20AC89845ND
2017-01-20AC89842ND
2017-04-21AC95091ND
2017-04-21AC95090ND
2017-04-21AC950920.600 ppb
2017-04-21AC95093ND
2017-07-17AD02396ND
2017-07-17AD02393ND
2017-07-17AD02395ND
2017-07-17AD02394ND
2017-08-17AD034180.580 ppb
2017-10-20AD08594ND
2017-10-20AD08595ND
2017-10-20AD08596ND
2017-10-20AD085970.540 ppb
2018-01-19AD120650.510 ppb
2018-05-02AD186810.510 ppb
2018-07-11AD29599ND
2018-08-15AD312130.800 ppb
2018-10-11AD350760.730 ppb
2019-01-08AD383880.620 ppb
2019-04-08AD46682ND
2019-07-10AD52724ND
2019-08-19AD53941ND
2019-10-20AD57391ND