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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Johnson County SUD

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

 

150

Samples

0

Samples exceeding legal limit (MCL)

87

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.81 ppb1715ND - 10.2 ppb
20151.94 ppb2714ND - 12.7 ppb
20161.54 ppb2712ND - 7.96 ppb
20172.02 ppb2712ND - 16.4 ppb
20181.39 ppb2619ND - 3.73 ppb
20192.21 ppb2615ND - 10.3 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
2014-02-20Q14056770018.46 ppb
2014-02-20Q1405677002ND
2014-02-20Q140567700310.2 ppb
2014-02-20Q1405677004ND
2014-05-29Q14184530142.10 ppb
2014-05-29Q14184530158.60 ppb
2014-05-29Q14184530162.00 ppb
2014-05-29Q14184530179.60 ppb
2014-07-22Q14300470061.70 ppb
2014-07-22Q14300470071.60 ppb
2014-07-22Q14300470041.80 ppb
2014-07-22Q14300470055.00 ppb
2014-07-22Q14300470151.15 ppb
2014-10-28Q14542510022.90 ppb
2014-10-28Q14542510032.20 ppb
2014-10-28Q14542510042.70 ppb
2014-10-28Q14542510014.80 ppb
2015-02-03Q15040450012.35 ppb
2015-02-03Q1504045004ND
2015-02-03Q15040450061.57 ppb
2015-02-03Q15040450162.30 ppb
2015-02-03Q15040450173.60 ppb
2015-02-03Q15040450182.50 ppb
2015-02-03Q15040450197.00 ppb
2015-04-16Q15145240012.36 ppb
2015-04-16Q15145240031.37 ppb
2015-04-16Q1514524006ND
2015-04-16Q1514524022ND
2015-04-16Q15145240231.49 ppb
2015-04-16Q15145240241.78 ppb
2015-04-16Q151452402112.7 ppb
2015-08-05Q1531043001ND
2015-08-05Q1531043004ND
2015-08-05Q1531043006ND
2015-08-05Q1531043008ND
2015-08-05Q15310430096.05 ppb
2015-08-05Q1531043015ND
2015-08-05Q1531043016ND
2015-08-05Q1531043017ND
2015-08-05Q15310430181.46 ppb
2015-12-07Q1548491001ND
2015-12-07Q1548491002ND
2015-12-07Q1548491003ND
2015-12-07Q15484910045.72 ppb
2016-03-17Q16112680081.36 ppb
2016-03-17Q16112680101.16 ppb
2016-03-17Q1611268011ND
2016-03-17Q16112680147.96 ppb
2016-03-17Q16112680161.46 ppb
2016-03-17Q1611268001ND
2016-03-17Q1611268002ND
2016-03-17Q16112680047.07 ppb
2016-03-17Q1611268003ND
2016-06-01Q16216800041.75 ppb
2016-06-01Q1621680001ND
2016-06-01Q1621680012ND
2016-06-01Q1621680013ND
2016-06-01Q1621680014ND
2016-06-01Q16216800154.23 ppb
2016-09-19Q1638628001ND
2016-09-19Q1638628002ND
2016-09-19Q1638628003ND
2016-09-19Q16386280045.02 ppb
2016-11-21Q16509440022.43 ppb
2016-11-21Q16509440121.27 ppb
2016-11-21Q16509440153.80 ppb
2016-11-21Q1650944013ND
2016-11-21Q1650944009ND
2016-11-21Q1650944023ND
2016-11-21Q1650944010ND
2016-11-21Q16509440243.98 ppb
2017-02-14Q17066870092.07 ppb
2017-02-14Q1706687003ND
2017-02-14Q1706687014ND
2017-02-14Q170668700416.4 ppb
2017-02-14Q1706687006ND
2017-05-04Q1718433006ND
2017-05-04Q1718433003ND
2017-05-04Q1718433013ND
2017-05-04Q171843300415.7 ppb
2017-05-04Q1718433014ND
2017-08-16Q17363010012.87 ppb
2017-08-16Q17363010032.01 ppb
2017-08-16Q17363010061.30 ppb
2017-08-16Q1736301007ND
2017-08-16Q17363010091.71 ppb
2017-08-16Q1736301011ND
2017-08-16Q1736301048ND
2017-08-16Q1736301049ND
2017-08-16Q17363010501.24 ppb
2017-08-16Q1736301051ND
2017-11-07Q17569900143.94 ppb
2017-11-07Q17569900114.00 ppb
2017-11-07Q17569900171.21 ppb
2017-11-07Q1756990008ND
2017-11-07Q1756990028ND
2017-11-07Q17569900092.22 ppb
2017-11-07Q1756990029ND
2018-02-21Q18073230071.78 ppb
2018-02-21Q18073230011.51 ppb
2018-02-21Q18073230101.46 ppb
2018-02-21Q18073230051.73 ppb
2018-02-21Q18073230113.73 ppb
2018-02-21Q18073230121.75 ppb
2018-05-30Q18215250011.66 ppb
2018-05-30Q18215250031.33 ppb
2018-05-30Q18215250021.81 ppb
2018-05-30Q18215250041.65 ppb
2018-09-11Q18361640021.02 ppb
2018-09-11Q18361640031.57 ppb
2018-09-11Q18361640043.47 ppb
2018-09-11Q18361640051.51 ppb
2018-12-10Q18502360141.26 ppb
2018-12-10Q18502360172.00 ppb
2018-12-10Q1850236009ND
2018-12-10Q1850236011ND
2018-12-10Q1850236018ND
2018-12-10Q1850236021ND
2018-12-10Q18502360231.59 ppb
2018-12-10Q1850236013ND
2018-12-10Q18502360042.70 ppb
2018-12-10Q1850236005ND
2018-12-10Q18502360062.53 ppb
2018-12-10Q1850236007ND
2019-02-20Q19075290031.69 ppb
2019-02-20Q19075290232.60 ppb
2019-02-20Q1907529004ND
2019-02-20Q19075290241.19 ppb
2019-02-20Q1907529007ND
2019-02-20Q1907529019ND
2019-02-20Q19075290271.64 ppb
2019-02-20Q19075290162.87 ppb
2019-02-20Q1907529036ND
2019-02-20Q19075290179.44 ppb
2019-02-20Q1907529018ND
2019-05-21Q19274290011.32 ppb
2019-05-21Q19274290032.57 ppb
2019-05-21Q1927429005ND
2019-05-21Q19274290184.02 ppb
2019-05-21Q19274290191.03 ppb
2019-05-21Q19274290201.18 ppb
2019-05-21Q1927429021ND
2019-07-31Q19499480023.21 ppb
2019-07-31Q1949948003ND
2019-07-31Q19499480045.46 ppb
2019-07-31Q1949948005ND
2019-10-16Q19728260019.01 ppb
2019-10-16Q1972826002ND
2019-10-16Q197282600310.3 ppb
2019-10-16Q1972826004ND