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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Town of Apex

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

 

139

Samples

0

Samples exceeding legal limit (MCL)

69

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.144 ppb162ND - 1.30 ppb
20150.813 ppb165ND - 4.60 ppb
20160.669 ppb166ND - 2.00 ppb
20172.20 ppb2015ND - 4.80 ppb
20185.09 ppb3224ND - 13.0 ppb
20191.76 ppb3917ND - 5.40 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
2014-02-1192189539001ND
2014-02-1192189539003ND
2014-02-11921895390041.30 ppb
2014-02-1192189539005ND
2014-05-1492201240001DISND
2014-05-1492201240002DISND
2014-05-1492201240003DISND
2014-05-1492201240004DISND
2014-08-1492213447001TTHND
2014-08-1492213447002TTHND
2014-08-1492213447003TTHND
2014-08-1492213447004TTHND
2014-11-1292225241001TTHND
2014-11-1292225241002TTHND
2014-11-1292225241003TTHND
2014-11-1292225241004TTH1.000 ppb
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-02-11ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-08-14ND
2015-08-14ND
2015-08-144.60 ppb
2015-08-14ND
2015-11-122.10 ppb
2015-11-122.10 ppb
2015-11-122.40 ppb
2015-11-121.80 ppb
2016-02-1292286426001TTHND
2016-02-1292286426003TTHND
2016-02-1292286426004TTHND
2016-02-1292286426005TTHND
2016-05-1192297108001TTH1.70 ppb
2016-05-1192297108003TTH2.00 ppb
2016-05-1192297108004TTH1.90 ppb
2016-05-1192297108005TTH1.60 ppb
2016-08-1792309277001TTHND
2016-08-1792309277002TTHND
2016-08-1792309277003TTH1.70 ppb
2016-08-1792309277004TTH1.80 ppb
2016-11-1692319879001TTHND
2016-11-1692319879002TTHND
2016-11-1692319879004TTHND
2016-11-1692319879005TTHND
2017-02-1592329986001TTHND
2017-02-1592329986002TTHND
2017-02-1592329986004TTHND
2017-02-1592329986005TTHND
2017-05-1292340418001TTH4.60 ppb
2017-05-1292340418002TTH4.70 ppb
2017-05-1292340418004TTH4.80 ppb
2017-05-1292340418005TTH4.80 ppb
2017-08-1692351687001TTH1.10 ppb
2017-08-1692351687002TTH1.10 ppb
2017-08-1692351687003TTHND
2017-08-1692351687005TTH1.10 ppb
2017-11-1492363203001TTH2.70 ppb
2017-11-1492363203002TTH2.30 ppb
2017-11-1492363203003TTH2.90 ppb
2017-11-1492363203004TTH3.10 ppb
2017-11-1492363203005TTH2.70 ppb
2017-11-1492363203006TTH2.50 ppb
2017-11-1492363203007TTH2.70 ppb
2017-11-1492363203008TTH2.80 ppb
2018-02-1492373327001TTH 9.10 ppb
2018-02-1492373327002TTH 11.0 ppb
2018-02-1492373327003TTH 11.0 ppb
2018-02-1492373327004TTH 12.0 ppb
2018-02-1492373327005TTH 12.0 ppb
2018-02-1492373327006TTH 12.0 ppb
2018-02-1492373327007TTH 11.0 ppb
2018-02-1492373327008TTH 13.0 ppb
2018-05-1692384990001TTH 2.90 ppb
2018-05-1692384990002TTH 2.00 ppb
2018-05-1692384990003TTH 1.90 ppb
2018-05-1692384990004TTH 2.40 ppb
2018-05-1692384990005TTH 2.80 ppb
2018-05-1692384990006TTH 2.10 ppb
2018-05-1692384990007TTH 2.00 ppb
2018-05-1692384990008TTH 2.00 ppb
2018-08-1492395647001TTH 6.70 ppb
2018-08-1492395647002TTH 6.50 ppb
2018-08-1492395647003TTH 6.60 ppb
2018-08-1492395647004TTH 6.10 ppb
2018-08-1492395647005TTH 6.90 ppb
2018-08-1492395647006TTH 7.10 ppb
2018-08-1492395647007TTH 7.10 ppb
2018-08-1492395647008TTH 6.60 ppb
2018-11-1692407681001TTH ND
2018-11-1692407681002TTH ND
2018-11-1692407681003TTH ND
2018-11-1692407681004TTH ND
2018-11-1692407681005TTH ND
2018-11-1692407681006TTH ND
2018-11-1692407681007TTH ND
2018-11-1692407681008TTH ND
2019-02-1492417771001_3770ND
2019-02-1492417771001_3770ND
2019-02-1492417771002_3770ND
2019-02-1492417771002_3770ND
2019-02-1492417771004_3770ND
2019-02-1492417771004_3770ND
2019-02-1492417771005_3770ND
2019-02-1492417771005_3770ND
2019-02-1492417771006_3770ND
2019-02-1492417771006_3770ND
2019-02-1492417771007_3770ND
2019-02-1492417771007_3770ND
2019-02-1492417771008_3770ND
2019-02-1492417771009_3770ND
2019-02-1492417771009_3770ND
2019-05-1592429303001_3770ND
2019-05-1592429303002_3770ND
2019-05-1592429303003_3770ND
2019-05-1592429303004_3770ND
2019-05-1592429303005_3770ND
2019-05-1592429303006_37701.000 ppb
2019-05-1592429303007_3770ND
2019-05-1592429303008_3770ND
2019-09-2592446996002_37703.00 ppb
2019-09-2592446996003_37704.20 ppb
2019-09-2592446996004_37703.30 ppb
2019-09-2592446996005_37703.30 ppb
2019-09-2592446996006_37703.10 ppb
2019-09-2592446996007_37703.40 ppb
2019-09-2592446996008_37703.20 ppb
2019-09-2592446996009_37703.30 ppb
2019-11-1392453473001_37705.20 ppb
2019-11-1392453473002_37705.30 ppb
2019-11-1392453473003_37705.30 ppb
2019-11-1392453473004_37705.00 ppb
2019-11-1392453473005_37705.40 ppb
2019-11-1392453473006_37704.70 ppb
2019-11-1392453473007_37705.00 ppb
2019-11-1392453473008_37705.00 ppb