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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of McFarland

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

 

97

Samples

0

Samples exceeding legal limit (MCL)

41

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.181 ppb164ND - 1.10 ppb
20151.30 ppb177ND - 10.8 ppb
20160.571 ppb146ND - 2.40 ppb
20173.40 ppb136ND - 18.0 ppb
20181.01 ppb219ND - 5.10 ppb
20193.37 ppb1610ND - 14.0 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
2014-03-185867-016-1037ND
2014-03-195867-011-1330ND
2014-03-215867-006-1300ND
2014-03-215867-014-1230ND
2014-06-175867-901-0915ND
2014-06-175867-903-08200.500 ppb
2014-06-175867-902-0800ND
2014-06-175867-900-0900ND
2014-09-165867-901-0935ND
2014-09-165867-903-10551.10 ppb
2014-09-165867-900-10300.700 ppb
2014-09-165867-902-1115ND
2014-12-235867-901-1100ND
2014-12-235867-900-0940ND
2014-12-235867-902-0930ND
2014-12-235867-903-10000.600 ppb
2015-03-175867-900-0945ND
2015-03-175867-902-10400.600 ppb
2015-03-175867-903-1130ND
2015-03-245867-901-11403.80 ppb
2015-06-235867-900-12000.800 ppb
2015-06-235867-902-1240ND
2015-06-235867-014-1255ND
2015-06-235867-901-1255ND
2015-06-235867-903-13321.60 ppb
2015-09-295867-900-0905ND
2015-09-295867-903-0856ND
2015-09-295867-901-0935ND
2015-09-295867-902-09212.40 ppb
2015-12-155867-900-1020ND
2015-12-155867-902-09452.10 ppb
2015-12-155867-903-1000ND
2015-12-225867-901-123010.8 ppb
2016-03-295867-011-1120ND
2016-03-295867-900-08170.700 ppb
2016-03-295867-902-07550.800 ppb
2016-03-295867-901-09172.40 ppb
2016-03-295867-903-08291.000 ppb
2016-06-285867-902-09170.700 ppb
2016-06-285867-903-1004ND
2016-06-285867-900-0947ND
2016-09-285867-902-13132.40 ppb
2016-09-285867-900-1320ND
2016-09-285867-903-1325ND
2016-12-225867-902-1401ND
2016-12-225867-900-1407ND
2016-12-225867-903-1425ND
2017-03-285867-902-09008.00 ppb
2017-03-285867-900-09349.20 ppb
2017-03-285867-903-0920ND
2017-04-045867-016-1050ND
2017-04-115867-006-1027ND
2017-05-095867-900-0929ND
2017-05-095867-903-09545.00 ppb
2017-08-295867-903-09492.00 ppb
2017-08-295867-900-10202.00 ppb
2017-08-295867-902-091518.0 ppb
2017-08-295867-901-0927ND
2017-11-145867-903-0835ND
2017-11-145867-900-0820ND
2018-02-135867-903-10001.000 ppb
2018-02-135867-902-09002.00 ppb
2018-02-135867-900-0915ND
2018-02-135867-901-1025ND
2018-03-125867-011-1155ND
2018-05-085867-900-1000ND
2018-05-085867-902-1102ND
2018-05-085867-903-10101.000 ppb
2018-05-085867-904-1048ND
2018-08-165806-900-12050.750 ppb
2018-08-165806-902-1210ND
2018-08-165806-903-11553.30 ppb
2018-08-165806-016-12050.750 ppb
2018-08-165806-904-12205.00 ppb
2018-11-065806-006-0840ND
2018-11-065806-016-0900ND
2018-11-065806-011-1040ND
2018-11-135806-904-14502.40 ppb
2018-11-135806-902-1415ND
2018-11-135806-016-14405.10 ppb
2018-11-135806-900-1425ND
2019-02-055806-904-1030ND
2019-02-055806-900-10152.90 ppb
2019-02-055806-902-10304.40 ppb
2019-04-105806-903-11104.50 ppb
2019-05-015806-904-1110ND
2019-05-015806-900-09303.50 ppb
2019-05-015806-902-0850ND
2019-07-025806-016-0905ND
2019-08-055806-904-09253.00 ppb
2019-08-055806-900-08353.10 ppb
2019-08-055806-903-090514.0 ppb
2019-08-055806-902-10403.00 ppb
2019-11-055806-900-0815ND
2019-11-055806-904-0850ND
2019-11-055806-902-09051.50 ppb
2019-11-055806-903-082514.0 ppb