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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Wells Branch MUD 1

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)

63

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.85 ppb16161.50 ppb - 2.20 ppb
20151.58 ppb1610ND - 4.40 ppb
20160.0688 ppb161ND - 1.10 ppb
20170.850 ppb1610ND - 1.80 ppb
20182.31 ppb16161.20 ppb - 3.40 ppb
20190.869 ppb1610ND - 2.00 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
2014-03-13AC469452.00 ppb
2014-03-13AC469442.00 ppb
2014-03-13AC469382.00 ppb
2014-03-13AC469252.00 ppb
2014-06-17AC571531.70 ppb
2014-06-17AC571541.60 ppb
2014-06-17AC571551.60 ppb
2014-06-17AC571501.60 ppb
2014-08-26AC652371.50 ppb
2014-08-26AC652391.50 ppb
2014-08-26AC652501.60 ppb
2014-08-26AC652362.20 ppb
2014-11-19AC724261.90 ppb
2014-11-19AC724282.20 ppb
2014-11-19AC724302.00 ppb
2014-11-19AC724272.20 ppb
2015-03-18AC849893.80 ppb
2015-03-18AC849884.00 ppb
2015-03-18AC849874.40 ppb
2015-03-18AC849854.20 ppb
2015-05-20AC927932.00 ppb
2015-05-20AC927961.40 ppb
2015-05-20AC927901.20 ppb
2015-05-20AC928001.10 ppb
2015-09-21AD077761.50 ppb
2015-09-21AD077771.70 ppb
2015-09-21AD07783ND
2015-09-21AD07775ND
2015-11-04AD12563ND
2015-11-04AD12622ND
2015-11-04AD12564ND
2015-11-04AD12562ND
2016-02-09AD22729ND
2016-02-09AD22728ND
2016-02-09AD22733ND
2016-02-09AD227311.10 ppb
2016-06-22AD41500ND
2016-06-22AD41489ND
2016-06-22AD41504ND
2016-06-22AD41492ND
2016-09-13AD49161ND
2016-09-13AD49147ND
2016-09-13AD49146ND
2016-09-13AD49159ND
2016-11-29AD59355ND
2016-11-29AD59357ND
2016-11-29AD59356ND
2016-11-29AD59359ND
2017-03-20AD75693ND
2017-03-20AD75692ND
2017-03-20AD75691ND
2017-03-20AD75690ND
2017-05-04AD827001.10 ppb
2017-05-04AD827201.000 ppb
2017-05-04AD82714ND
2017-05-04AD82701ND
2017-07-19AD899141.30 ppb
2017-07-19AD899171.20 ppb
2017-07-19AD899201.50 ppb
2017-07-19AD899181.40 ppb
2017-11-28AE059041.70 ppb
2017-11-28AE058991.80 ppb
2017-11-28AE059021.60 ppb
2017-11-28AE059001.000 ppb
2018-02-21AE146962.00 ppb
2018-02-21AE146891.60 ppb
2018-02-21AE146951.60 ppb
2018-02-21AE146901.50 ppb
2018-04-17AE227501.20 ppb
2018-04-17AE227461.60 ppb
2018-04-17AE227511.60 ppb
2018-04-17AE227451.30 ppb
2018-07-19AE339083.20 ppb
2018-07-19AE339013.30 ppb
2018-07-19AE339033.40 ppb
2018-07-19AE339073.40 ppb
2018-10-10AE430302.80 ppb
2018-10-10AE430262.80 ppb
2018-10-10AE430312.80 ppb
2018-10-10AE430252.90 ppb
2019-01-29AE51925ND
2019-01-29AE51897ND
2019-01-29AE51922ND
2019-01-29AE51924ND
2019-04-18AE629371.000 ppb
2019-04-18AE629321.000 ppb
2019-04-18AE62940ND
2019-04-18AE62933ND
2019-07-11AE740651.50 ppb
2019-07-11AE740601.40 ppb
2019-07-11AE740591.50 ppb
2019-07-11AE740581.20 ppb
2019-10-15AE865871.30 ppb
2019-10-15AE865851.10 ppb
2019-10-15AE865802.00 ppb
2019-10-15AE865841.90 ppb