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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Town of Ferriday 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

 

98

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND180ND
2015ND160ND
20160.414 ppb166ND - 1.40 ppb
20170.405 ppb166ND - 1.60 ppb
20180.135 ppb164ND - 0.550 ppb
20190.795 ppb168ND - 2.30 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
2014-02-19L0039977-02ND
2014-02-19L0039977-01ND
2014-02-19L0039977-02ND
2014-02-19L0039977-01ND
2014-03-17AD89796ND
2014-03-17AD89796ND
2014-05-14L0043099-10ND
2014-05-14L0043099-09ND
2014-05-14L0043099-10ND
2014-05-14L0043099-09ND
2014-08-1435151468001ND
2014-08-1435151468002ND
2014-08-1435151468002ND
2014-08-1435151468001ND
2014-11-17L0050823-01ND
2014-11-17L0050823-02ND
2014-11-17L0050823-02ND
2014-11-17L0050823-01ND
2015-02-17LA3922-1ND
2015-02-17LA3922-2ND
2015-02-17LA3922-2ND
2015-02-17LA3922-1ND
2015-05-1935190126002ND
2015-05-1935190126001ND
2015-05-1935190126002ND
2015-05-1935190126001ND
2015-08-1835204092002ND
2015-08-1835204092002ND
2015-08-1835204092001ND
2015-08-1835204092001ND
2015-11-17LA14376-1ND
2015-11-17LA14376-2ND
2015-11-17LA14376-1ND
2015-11-17LA14376-2ND
2016-02-18LA17444-1ND
2016-02-18LA17444-2ND
2016-02-18LA17444-1ND
2016-02-18LA17444-2ND
2016-05-17LA20830-21.30 ppb
2016-05-17LA20830-11.40 ppb
2016-05-17LA20830-21.30 ppb
2016-05-17LA20830-11.40 ppb
2016-08-16LA24653-1ND
2016-08-16LA24653-1ND
2016-08-24LA24653-2ND
2016-08-24LA24653-2ND
2016-11-14LA27748-1ND
2016-11-14LA27748-1ND
2016-11-18LA27914-10.610 ppb
2016-11-18LA27914-10.610 ppb
2017-02-0835294518001ND
2017-02-08352945180021.60 ppb
2017-02-08352945180021.60 ppb
2017-02-0835294518001ND
2017-05-0135309911006ND
2017-05-0135309911005ND
2017-05-0135309911006ND
2017-05-0135309911005ND
2017-08-0935329687005ND
2017-08-0935329687006ND
2017-08-0935329687005ND
2017-08-0935329687006ND
2017-11-08353472640020.790 ppb
2017-11-08353472640010.850 ppb
2017-11-08353472640020.790 ppb
2017-11-08353472640010.850 ppb
2018-02-2035375729001ND
2018-02-2035375729002ND
2018-02-2035375729001ND
2018-02-2035375729002ND
2018-05-0935391497002ND
2018-05-0935391497001ND
2018-05-0935391497001ND
2018-05-0935391497002ND
2018-08-0135408243002ND
2018-08-0135408243001ND
2018-08-0135408243002ND
2018-08-0135408243001ND
2018-11-27354336120020.550 ppb
2018-11-27354336120010.530 ppb
2018-11-27354336120010.530 ppb
2018-11-27354336120020.550 ppb
2019-02-1335448501002ND
2019-02-1335448501001ND
2019-02-1335448501001ND
2019-02-1335448501002ND
2019-05-07354677150020.970 ppb
2019-05-07354677150020.970 ppb
2019-05-07354677150010.890 ppb
2019-05-07354677150010.890 ppb
2019-08-21354926800022.20 ppb
2019-08-21354926800012.30 ppb
2019-08-21354926800012.30 ppb
2019-08-21354926800022.20 ppb
2019-11-1335512677001ND
2019-11-1335512677002ND
2019-11-1335512677001ND
2019-11-1335512677002ND