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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Cedar City Waterworks

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.350 ppb21ND - 0.700 ppb
20130.250 ppb21ND - 0.500 ppb
20140.800 ppb42ND - 1.60 ppb
2015ND20ND
20160.1000 ppb61ND - 0.600 ppb
20171.20 ppb32ND - 2.10 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 Result
2012-09-180.700 ppb
2012-09-18ND
2013-08-22ND
2013-08-220.500 ppb
2014-08-26ND
2014-08-26ND
2014-11-261.60 ppb
2014-11-261.60 ppb
2015-09-15ND
2015-09-15ND
2016-06-140.600 ppb
2016-06-14ND
2016-06-14ND
2016-06-14ND
2016-06-14ND
2016-06-14ND
2017-05-152.10 ppb
2017-10-30ND
2017-10-301.50 ppb