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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Collins 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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.335 ppb21ND - 0.670 ppb
2014ND10ND
2015ND10ND
2016ND20ND
2017ND40ND

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
2013-06-26AI049150.670 ppb
2013-09-04AI14449ND
2014-07-07AI44953ND
2015-09-30AI91812ND
2016-09-30AJ30290ND
2016-12-20AJ37329ND
2017-06-06AJ56805ND
2017-08-22AJ65236ND
2017-10-31AJ72701ND
2017-12-26AJ75969ND