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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

City of Milpitas

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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

 

169

Samples

0

Samples exceeding legal limit (MCL)

48

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20144.97 ppb329ND - 32.0 ppb
20155.62 ppb3212ND - 24.0 ppb
20162.75 ppb164ND - 15.0 ppb
20172.08 ppb259ND - 14.0 ppb
20182.58 ppb326ND - 18.0 ppb
20192.03 ppb328ND - 20.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2014-03-199590-900-132232.0 ppb
2014-03-199590-901-1410ND
2014-03-199590-902-1344ND
2014-03-199590-903-142630.0 ppb
2014-03-199590-904-15001.90 ppb
2014-03-199590-905-1434ND
2014-03-199590-906-1320ND
2014-03-199590-907-13532.00 ppb
2014-06-269590-900-141519.0 ppb
2014-06-269590-901-1450ND
2014-06-269590-902-1403ND
2014-06-269590-903-132516.0 ppb
2014-06-269590-904-1451ND
2014-06-269590-905-1432ND
2014-06-269590-906-1346ND
2014-06-269590-907-1350ND
2014-09-179590-900-105416.0 ppb
2014-09-179590-901-0910ND
2014-09-179590-902-1024ND
2014-09-179590-903-100516.0 ppb
2014-09-179590-904-1128ND
2014-09-179590-905-0838ND
2014-09-179590-906-0939ND
2014-09-179590-907-1151ND
2014-12-319590-900-081826.0 ppb
2014-12-319590-901-0835ND
2014-12-319590-902-0935ND
2014-12-319590-903-0910ND
2014-12-319590-904-1034ND
2014-12-319590-905-0810ND
2014-12-319590-906-0905ND
2014-12-319590-907-0954ND
2015-03-109590-900-120018.0 ppb
2015-03-109590-901-0915ND
2015-03-109590-902-1005ND
2015-03-109590-903-104120.0 ppb
2015-03-109590-904-1110ND
2015-03-109590-905-0849ND
2015-03-109590-906-0940ND
2015-03-109590-907-1136ND
2015-06-099590-900-105021.0 ppb
2015-06-099590-901-0850ND
2015-06-099590-902-1008ND
2015-06-099590-903-093824.0 ppb
2015-06-099590-904-1150ND
2015-06-099590-905-0825ND
2015-06-099590-906-0915ND
2015-06-099590-907-1121ND
2015-09-099590-900-120220.0 ppb
2015-09-099590-901-0916ND
2015-09-099590-902-1000ND
2015-09-099590-903-102624.0 ppb
2015-09-099590-904-11293.60 ppb
2015-09-099590-905-0850ND
2015-09-099590-906-0940ND
2015-09-099590-907-11093.40 ppb
2015-12-169590-900-104820.0 ppb
2015-12-169590-901-0805ND
2015-12-169590-902-0845ND
2015-12-169590-903-091218.0 ppb
2015-12-169590-904-10164.30 ppb
2015-12-169590-905-0743ND
2015-12-169590-906-0826ND
2015-12-169590-907-09433.40 ppb
2016-03-169590-900-11366.30 ppb
2016-03-169590-901-0930ND
2016-03-169590-902-1038ND
2016-03-169590-903-11149.70 ppb
2016-03-169590-904-1239ND
2016-03-169590-905-0900ND
2016-03-169590-906-1003ND
2016-03-169590-907-1210ND
2016-07-209590-900-092715.0 ppb
2016-07-209590-901-0930ND
2016-07-209590-902-1025ND
2016-07-209590-903-102913.0 ppb
2016-07-209590-904-1057ND
2016-07-209590-905-1123ND
2016-07-209590-906-1052ND
2016-07-209590-907-0958ND
2017-03-229590-900-112014.0 ppb
2017-03-229590-901-0903ND
2017-03-229590-902-0920ND
2017-03-229590-903-101514.0 ppb
2017-03-229590-904-10403.20 ppb
2017-03-229590-905-0848ND
2017-03-229590-906-1001ND
2017-03-229590-907-08112.70 ppb
2017-07-139590-900-08504.40 ppb
2017-09-209590-900-09305.20 ppb
2017-09-209590-901-1317ND
2017-09-209590-902-1250ND
2017-09-209590-903-13404.80 ppb
2017-09-209590-904-10212.40 ppb
2017-09-209590-905-1101ND
2017-09-209590-906-1423ND
2017-09-209590-907-10001.20 ppb
2017-12-209590-900-0922ND
2017-12-209590-901-1005ND
2017-12-209590-902-0803ND
2017-12-209590-903-1313ND
2017-12-209590-904-1246ND
2017-12-209590-905-1358ND
2017-12-209590-906-0847ND
2017-12-209590-907-1047ND
2018-03-149590-900-1022ND
2018-03-149590-901-1425ND
2018-03-149590-902-1115ND
2018-03-149590-903-1140ND
2018-03-149590-904-1050ND
2018-03-149590-905-1220ND
2018-03-149590-906-1625ND
2018-03-149590-907-1115ND
2018-06-219590-900-103610.00 ppb
2018-06-219590-901-1301ND
2018-06-219590-902-10178.40 ppb
2018-06-219590-903-0910ND
2018-06-219590-904-1115ND
2018-06-219590-905-0840ND
2018-06-219590-906-0818ND
2018-06-219590-907-0953ND
2018-09-269590-900-134014.0 ppb
2018-09-269590-901-1300ND
2018-09-269590-902-0813ND
2018-09-269590-903-093718.0 ppb
2018-09-269590-904-1100ND
2018-09-269590-905-0840ND
2018-09-269590-906-1130ND
2018-09-269590-907-1028ND
2018-12-139590-900-100615.0 ppb
2018-12-139590-901-0854ND
2018-12-139590-902-0828ND
2018-12-139590-903-113217.0 ppb
2018-12-139590-904-1030ND
2018-12-139590-905-1108ND
2018-12-139590-906-0804ND
2018-12-139590-907-0923ND
2019-03-209590-900-10285.90 ppb
2019-03-209590-901-1320ND
2019-03-209590-902-0837ND
2019-03-209590-903-09364.90 ppb
2019-03-209590-904-10013.40 ppb
2019-03-209590-905-0822ND
2019-03-209590-906-0855ND
2019-03-209590-907-11024.10 ppb
2019-06-199590-900-1525ND
2019-06-199590-901-1155ND
2019-06-199590-902-1252ND
2019-06-199590-903-1334ND
2019-06-199590-904-1405ND
2019-06-199590-905-1124ND
2019-06-199590-906-1225ND
2019-06-199590-907-1445ND
2019-09-309590-900-140417.0 ppb
2019-09-309590-901-1641ND
2019-09-309590-902-0740ND
2019-09-309590-903-155920.0 ppb
2019-09-309590-904-1510ND
2019-09-309590-905-0739ND
2019-09-309590-906-1620ND
2019-09-309590-907-1315ND
2019-12-189590-900-12506.50 ppb
2019-12-189590-901-1045ND
2019-12-189590-902-1109ND
2019-12-189590-903-12013.30 ppb
2019-12-189590-904-1327ND
2019-12-189590-905-0958ND
2019-12-189590-906-1134ND
2019-12-189590-907-1226ND