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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Auburn Water District

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

 

106

Samples

0

Samples exceeding legal limit (MCL)

32

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.550 ppb220.550 ppb
20150.592 ppb264ND - 5.10 ppb
2016N/A00N/A
20170.111 ppb304ND - 1.03 ppb
20182.79 ppb12120.540 ppb - 6.90 ppb
20190.682 ppb3610ND - 5.01 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
2014-06-230.550 ppb
2014-06-230.550 ppb
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-08-112.60 ppb
2015-08-112.60 ppb
2015-08-115.10 ppb
2015-08-115.10 ppb
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-170.640 ppb
2017-05-170.640 ppb
2017-05-17ND
2017-05-17ND
2017-05-171.03 ppb
2017-05-171.03 ppb
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-10-18ND
2017-10-18ND
2018-02-070.540 ppb
2018-02-070.540 ppb
2018-05-300.630 ppb
2018-05-300.630 ppb
2018-08-146.50 ppb
2018-08-146.50 ppb
2018-08-146.90 ppb
2018-08-146.90 ppb
2018-09-111.53 ppb
2018-09-111.53 ppb
2018-11-140.610 ppb
2018-11-140.610 ppb
2019-03-141.32 ppb
2019-03-141.32 ppb
2019-08-144.53 ppb
2019-08-144.53 ppb
2019-08-145.01 ppb
2019-08-145.01 ppb
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-270.880 ppb
2019-08-270.880 ppb
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-10-080.540 ppb
2019-10-080.540 ppb