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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Conway Water System

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

 

190

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND330ND
2015ND330ND
2016ND250ND
2017ND330ND
2018ND330ND
2019ND330ND

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
2014-02-1114044003702ND
2014-02-1114044003802ND
2014-02-1114044003902ND
2014-02-1114044003602ND
2014-02-1114044003502ND
2014-02-1114044003402ND
2014-03-1714079005202ND
2014-03-1714079005102ND
2014-04-0214093011201ND
2014-04-2114114007902ND
2014-04-2114114007202ND
2014-04-2114114007302ND
2014-04-2114114007702ND
2014-04-2114114007502ND
2014-04-2114114007402ND
2014-04-2114114007602ND
2014-04-2114114007802ND
2014-07-2114205012202ND
2014-07-2114205012102ND
2014-07-2114205012302ND
2014-07-2114205011902ND
2014-07-2114205011602ND
2014-07-2114205012402ND
2014-07-2114205012502ND
2014-07-2114205012002ND
2014-10-2014295000902ND
2014-10-2014295001002ND
2014-10-2014295001302ND
2014-10-2014295001202ND
2014-10-2014295000702ND
2014-10-2014295001402ND
2014-10-2014295001102ND
2014-10-2014295000802ND
2015-01-2115022005402ND
2015-01-2115022005602ND
2015-01-2115022006002ND
2015-01-2115022005502ND
2015-01-2115022006102ND
2015-01-2115022005902ND
2015-01-2115022005802ND
2015-01-2115022005702ND
2015-04-0615099001009ND
2015-04-2115113001502ND
2015-04-2115113001802ND
2015-04-2115113001602ND
2015-04-2115113001902ND
2015-04-2115113001402ND
2015-04-2115113002102ND
2015-04-2115113001702ND
2015-04-2115113002002ND
2015-07-2915211005302ND
2015-07-2915211005502ND
2015-07-2915211005202ND
2015-07-2915211005602ND
2015-07-2915211004902ND
2015-07-2915211005102ND
2015-07-2915211005402ND
2015-07-2915211005002ND
2015-10-1915295002702ND
2015-10-1915295002502ND
2015-10-1915295003102ND
2015-10-1915295002902ND
2015-10-1915295002802ND
2015-10-1915295003202ND
2015-10-1915295003002ND
2015-10-1915295002602ND
2016-04-0516098000801ND
2016-04-1816112010501ND
2016-04-1816112010101ND
2016-04-1816112009901ND
2016-04-1816112010001ND
2016-04-1816112009801ND
2016-04-1816112010201ND
2016-04-1816112010301ND
2016-04-1816112010401ND
2016-07-2116204003502ND
2016-07-2116204003602ND
2016-07-2116204003702ND
2016-07-2116204003302ND
2016-07-2116204003202ND
2016-07-2116204003102ND
2016-07-2116204003002ND
2016-07-2116204003402ND
2016-10-1916294007602ND
2016-10-1916294007702ND
2016-10-1916294008102ND
2016-10-1916294008002ND
2016-10-1916294007802ND
2016-10-1916294007902ND
2016-10-1916294007402ND
2016-10-1916294007502ND
2017-01-1617019005202ND
2017-01-1617019004702ND
2017-01-1617019004602ND
2017-01-1617019004502ND
2017-01-1617019004802ND
2017-01-1617019004902ND
2017-01-1617019005002ND
2017-01-1617019005102ND
2017-04-0317095000501ND
2017-05-1717138002402ND
2017-05-1717138002302ND
2017-05-1717138002202ND
2017-05-1717138002902ND
2017-05-1717138002802ND
2017-05-1717138002702ND
2017-05-1717138002602ND
2017-05-1717138002502ND
2017-08-1417229006502ND
2017-08-1417229006202ND
2017-08-1417229006302ND
2017-08-1417229006602ND
2017-08-1417229006702ND
2017-08-1417229006802ND
2017-08-1417229006902ND
2017-08-1417229006402ND
2017-11-1317320004402ND
2017-11-1317320004302ND
2017-11-1317320004202ND
2017-11-1317320004102ND
2017-11-1317320003702ND
2017-11-1317320004002ND
2017-11-1317320003902ND
2017-11-1317320003802ND
2018-01-1518018000402ND
2018-01-1518018000802ND
2018-01-1518018000702ND
2018-01-1518018001202ND
2018-01-1518018000602ND
2018-01-1518018000502ND
2018-01-1518018000902ND
2018-01-1518018001002ND
2018-04-0218094000609ND
2018-04-1618109009802ND
2018-04-1618109010102ND
2018-04-1618109009702ND
2018-04-1618109009902ND
2018-04-1618109009602ND
2018-04-1618109010002ND
2018-04-1618109010202ND
2018-04-1618109009502ND
2018-07-1818200005702ND
2018-07-1818200005602ND
2018-07-1818200005502ND
2018-07-1818200006202ND
2018-07-1818200006102ND
2018-07-1818200005902ND
2018-07-1818200005802ND
2018-07-1818200006002ND
2018-10-1518290000202ND
2018-10-1518290000402ND
2018-10-1518290000802ND
2018-10-1518290000602ND
2018-10-1518290000302ND
2018-10-1518290000502ND
2018-10-1518290000702ND
2018-10-1518290000902ND
2019-02-1119045002302ND
2019-02-1119045002702ND
2019-02-1119045002202ND
2019-02-1119045002402ND
2019-02-1119045002502ND
2019-02-1119045002802ND
2019-02-1119045002602ND
2019-02-1119045002102ND
2019-05-0119122007402ND
2019-05-0119122008002ND
2019-05-0119122007701ND
2019-05-0119122007202ND
2019-05-0119122007602ND
2019-05-0119122007802ND
2019-05-0119122007902ND
2019-05-0119122007502ND
2019-05-0119122007302ND
2019-08-0519220005902ND
2019-08-0519220005402ND
2019-08-0519220005802ND
2019-08-0519220005702ND
2019-08-0519220005602ND
2019-08-0519220005302ND
2019-08-0519220005502ND
2019-08-0519220006002ND
2019-11-1819325003302ND
2019-11-1819325003902ND
2019-11-1819325003702ND
2019-11-1819325003802ND
2019-11-1819325003602ND
2019-11-1819325004002ND
2019-11-1819325003402ND
2019-11-1819325003502ND