Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

Valley of The Moon 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

 

94

Samples

0

Samples exceeding legal limit (MCL)

42

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.513 ppb167ND - 1.40 ppb
20151.01 ppb1611ND - 1.80 ppb
20160.881 ppb168ND - 2.50 ppb
20170.600 ppb188ND - 1.90 ppb
20180.331 ppb164ND - 1.40 ppb
20190.450 ppb124ND - 1.40 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
2014-01-065810-018-1235ND
2014-01-065810-014-1123ND
2014-01-065810-017-1030ND
2014-01-065810-021-1215ND
2014-04-075810-021-1205ND
2014-04-075810-018-1140ND
2014-04-075810-017-0840ND
2014-04-075810-014-0802ND
2014-07-145810-021-10301.10 ppb
2014-07-145810-018-11051.20 ppb
2014-07-145810-017-09301.40 ppb
2014-07-145810-014-08301.10 ppb
2014-10-135810-018-08281.10 ppb
2014-10-135810-017-09021.10 ppb
2014-10-135810-021-1044ND
2014-10-135810-014-09331.20 ppb
2015-01-125810-021-0947ND
2015-01-125810-018-0822ND
2015-01-125810-017-0845ND
2015-01-125810-014-0909ND
2015-04-135810-021-09201.20 ppb
2015-04-135810-018-08351.20 ppb
2015-04-135810-014-11131.20 ppb
2015-04-135810-017-10261.20 ppb
2015-07-065810-017-09001.80 ppb
2015-07-065810-014-09301.70 ppb
2015-07-065810-021-0815ND
2015-07-065810-018-09451.80 ppb
2015-10-055810-017-09151.70 ppb
2015-10-055810-014-08441.50 ppb
2015-10-055810-021-08101.30 ppb
2015-10-055810-018-09381.60 ppb
2016-01-115810-021-1000ND
2016-01-115810-017-0915ND
2016-01-115810-014-0934ND
2016-01-115810-018-08581.50 ppb
2016-04-045810-017-0903ND
2016-04-045810-014-0933ND
2016-04-045810-021-0832ND
2016-04-045810-018-0812ND
2016-07-055810-014-09001.80 ppb
2016-07-055810-021-09452.50 ppb
2016-07-055810-018-08372.40 ppb
2016-07-055810-017-08542.20 ppb
2016-10-035810-021-1138ND
2016-10-035810-014-10301.30 ppb
2016-10-035810-018-07591.20 ppb
2016-10-035810-017-10041.20 ppb
2017-01-035810-014-1050ND
2017-01-035810-021-0940ND
2017-01-035810-015-0810ND
2017-01-035810-017-1020ND
2017-01-035810-018-0840ND
2017-04-105810-021-0930ND
2017-04-105810-014-0800ND
2017-04-105810-015-10201.60 ppb
2017-04-105810-017-0830ND
2017-04-105810-018-1000ND
2017-07-105810-021-12161.20 ppb
2017-07-105810-017-08221.40 ppb
2017-07-105810-018-10221.60 ppb
2017-07-105810-014-08591.90 ppb
2017-10-175810-018-08131.10 ppb
2017-10-175810-021-0939ND
2017-10-175810-017-08341.000 ppb
2017-10-175810-014-09091.000 ppb
2018-01-105810-021-1020ND
2018-01-105810-014-0920ND
2018-01-105810-017-0950ND
2018-01-105810-018-1045ND
2018-04-105810-017-0850ND
2018-04-105810-021-0925ND
2018-04-105810-018-0950ND
2018-04-105810-014-0825ND
2018-07-105810-017-08401.40 ppb
2018-07-105810-021-09151.20 ppb
2018-07-105810-018-10151.40 ppb
2018-07-105810-014-08201.30 ppb
2018-10-025810-017-0845ND
2018-10-025810-018-0925ND
2018-10-025810-014-0820ND
2018-10-025810-021-0905ND
2019-01-085810-014-0809ND
2019-01-085810-018-0858ND
2019-01-085810-021-0917ND
2019-01-085810-017-0830ND
2019-04-085810-014-0805ND
2019-04-085810-021-0955ND
2019-04-085810-018-1015ND
2019-04-085810-017-0840ND
2019-07-095810-021-09401.20 ppb
2019-07-095810-017-09151.40 ppb
2019-07-095810-018-10001.40 ppb
2019-07-095810-014-08151.40 ppb