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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Greenfield

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

52

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.113 ppb161ND - 1.80 ppb
20150.522 ppb187ND - 2.00 ppb
20161.12 ppb179ND - 7.50 ppb
20171.56 ppb1612ND - 4.40 ppb
20181.000 ppb189ND - 8.00 ppb
20193.00 ppb1714ND - 16.0 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
2014-01-149588-801-0930ND
2014-01-149588-802-0915ND
2014-01-149588-803-0945ND
2014-01-149588-804-1030ND
2014-04-089588-801-0945ND
2014-04-089588-802-0915ND
2014-04-089588-803-1045ND
2014-04-089588-804-1030ND
2014-07-159588-801-0945ND
2014-07-159588-802-0915ND
2014-07-159588-803-1000ND
2014-07-159588-804-1015ND
2014-10-145810-805-0930ND
2014-10-145810-807-0900ND
2014-10-145810-808-1040ND
2014-11-045810-806-10301.80 ppb
2015-01-135810-805-0930ND
2015-01-135810-806-0915ND
2015-01-135810-807-0900ND
2015-01-135810-808-1035ND
2015-01-205810-001-1000ND
2015-01-205810-006-1010ND
2015-04-145810-805-0930ND
2015-04-145810-806-09152.00 ppb
2015-04-145810-807-0900ND
2015-04-145810-808-1045ND
2015-07-145810-805-1115ND
2015-07-145810-806-10551.40 ppb
2015-07-145810-807-10351.20 ppb
2015-07-145810-808-10151.10 ppb
2015-10-135810-806-09351.30 ppb
2015-10-135810-807-09201.20 ppb
2015-10-205810-805-1200ND
2015-10-205810-808-12301.20 ppb
2016-01-129588-805-1100ND
2016-01-129588-806-1045ND
2016-01-129588-807-11301.20 ppb
2016-01-129588-808-11451.000 ppb
2016-01-195867-010-1040ND
2016-04-125810-805-1135ND
2016-04-125810-806-1120ND
2016-04-125810-807-11051.000 ppb
2016-04-125810-808-1050ND
2016-07-125867-805-11101.70 ppb
2016-07-125867-806-10552.10 ppb
2016-07-125867-807-10402.30 ppb
2016-07-125867-808-11401.000 ppb
2016-10-115810-805-1105ND
2016-10-115810-806-10507.50 ppb
2016-10-115810-807-1035ND
2016-10-115810-808-10201.20 ppb
2017-01-105867-805-0900ND
2017-01-105867-806-08503.80 ppb
2017-01-105867-807-08351.40 ppb
2017-01-105867-808-10051.30 ppb
2017-04-115867-805-0900ND
2017-04-115867-806-08454.40 ppb
2017-04-115867-807-08301.10 ppb
2017-04-115867-808-0930ND
2017-07-115867-805-0945ND
2017-07-115867-806-11203.00 ppb
2017-07-115867-807-11052.00 ppb
2017-07-115867-808-10502.00 ppb
2017-10-025867-805-11151.000 ppb
2017-10-025867-806-11002.00 ppb
2017-10-025867-807-10452.00 ppb
2017-10-025867-808-11451.000 ppb
2018-01-095867-805-0900ND
2018-01-095867-806-09451.000 ppb
2018-01-095867-807-08301.000 ppb
2018-01-095867-808-09302.00 ppb
2018-02-205810-001-1000ND
2018-02-205810-006-1010ND
2018-04-105867-805-1040ND
2018-04-105867-806-09551.000 ppb
2018-04-105867-807-09401.000 ppb
2018-05-015867-808-09451.000 ppb
2018-07-105867-805-0930ND
2018-07-105867-806-09158.00 ppb
2018-07-105867-807-0900ND
2018-07-105867-808-10152.00 ppb
2018-10-095867-805-1105ND
2018-10-095867-806-09401.000 ppb
2018-10-095867-807-0920ND
2018-10-095867-808-1125ND
2019-01-085810-010-1000ND
2019-01-085867-805-0900ND
2019-01-085867-806-08407.00 ppb
2019-01-085867-807-08102.00 ppb
2019-01-085867-808-09202.00 ppb
2019-04-095867-805-1000ND
2019-04-095867-806-09451.000 ppb
2019-04-095867-807-09301.000 ppb
2019-04-095867-808-11001.000 ppb
2019-07-095867-805-09501.000 ppb
2019-07-095867-806-10053.00 ppb
2019-07-095867-807-10205.00 ppb
2019-07-095867-808-103516.0 ppb
2019-10-085867-805-09001.000 ppb
2019-10-085867-806-08409.00 ppb
2019-10-085867-807-08201.000 ppb
2019-10-085867-808-09351.000 ppb