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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Niles City PWS

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

 

101

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND
20180.133 ppb214ND - 0.950 ppb
2019ND160ND

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
2014-01-0514010585ND
2014-01-0514010586ND
2014-01-0514010587ND
2014-01-0514010588ND
2014-04-0714041626ND
2014-04-0714041627ND
2014-04-0714041628ND
2014-04-0714041629ND
2014-07-0114070507ND
2014-07-0114070508ND
2014-07-0114070509ND
2014-07-0114070510ND
2014-10-0714101054ND
2014-10-0714101055ND
2014-10-0714101056ND
2014-10-0714101057ND
2015-01-0615010441ND
2015-01-0615010442ND
2015-01-0615010443ND
2015-01-0615010444ND
2015-04-0615041192ND
2015-04-0615041193ND
2015-04-0615041194ND
2015-04-0615041195ND
2015-07-0715071229ND
2015-07-0715071230ND
2015-07-0715071231ND
2015-07-0715071232ND
2015-10-0615100706ND
2015-10-0615100707ND
2015-10-0615100708ND
2015-10-0615100709ND
2016-01-0616010872ND
2016-01-0616010873ND
2016-01-0616010874ND
2016-01-0616010875ND
2016-04-0516040558ND
2016-04-0516040559ND
2016-04-0516040560ND
2016-04-0516040561ND
2016-07-0616070344ND
2016-07-0616070345ND
2016-07-0616070346ND
2016-07-0616070347ND
2016-10-0416100661ND
2016-10-0416100662ND
2016-10-0416100663ND
2016-10-0416100665ND
2017-01-0417010336ND
2017-01-0417010337ND
2017-01-0417010338ND
2017-01-0417010339ND
2017-04-0417040383ND
2017-04-0417040384ND
2017-04-0417040385ND
2017-04-0417040387ND
2017-07-0517070614ND
2017-07-0517070615ND
2017-07-0517070616ND
2017-07-0517070617ND
2017-10-0317100525ND
2017-10-0317100526ND
2017-10-0317100527ND
2017-10-0317100528ND
2018-01-0318010223ND
2018-01-0318010224ND
2018-01-0318010225ND
2018-01-0318010226ND
2018-04-0318040349ND
2018-04-0318040350ND
2018-04-0318040351ND
2018-04-0318040352ND
2018-06-0518060583ND
2018-06-0518060585ND
2018-06-0518060586ND
2018-06-0518060587ND
2018-07-0618071102ND
2018-07-0618071104ND
2018-07-0618071105ND
2018-07-0618071106ND
2018-10-02181007230.590 ppb
2018-10-02181007190.590 ppb
2018-10-0218100720ND
2018-10-02181007210.950 ppb
2018-10-02181007220.670 ppb
2019-01-0419011049ND
2019-01-0419011050ND
2019-01-0419011051ND
2019-01-0419011052ND
2019-04-0219041009ND
2019-04-0219041010ND
2019-04-0219041011ND
2019-04-0219041012ND
2019-07-0119070863ND
2019-07-0119070864ND
2019-07-0119070865ND
2019-07-0119070866ND
2019-10-0119100477ND
2019-10-0119100479ND
2019-10-0119100481ND
2019-10-0119100483ND