Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dibromochloromethane

Suburban Water Systems - San Jose Hills

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

 

369

Samples

0

Samples exceeding legal limit (MCL)

199

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20142.33 ppb6729ND - 12.0 ppb
20155.37 ppb5132ND - 13.0 ppb
20164.34 ppb6434ND - 24.0 ppb
20172.74 ppb6738ND - 13.0 ppb
20184.38 ppb6736ND - 14.0 ppb
20193.31 ppb5330ND - 19.0 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
2014-01-139588-065-1036ND
2014-01-139588-075-1045ND
2014-01-229588-800-10406.00 ppb
2014-01-229588-801-10254.60 ppb
2014-01-229588-802-11106.70 ppb
2014-01-229588-803-10004.50 ppb
2014-01-229588-804-10205.40 ppb
2014-01-229588-805-11006.20 ppb
2014-01-229588-806-09401.30 ppb
2014-01-229588-807-10103.30 ppb
2014-02-119588-065-1041ND
2014-02-119588-075-1101ND
2014-02-219588-071-1322ND
2014-03-119588-071-1349ND
2014-03-129588-065-1323ND
2014-03-129588-075-1337ND
2014-04-159588-065-1125ND
2014-04-159588-071-1101ND
2014-04-159588-075-1350ND
2014-04-219588-800-09402.90 ppb
2014-04-219588-801-09301.20 ppb
2014-04-219588-802-10006.40 ppb
2014-04-219588-803-0905ND
2014-04-219588-804-09201.60 ppb
2014-04-219588-805-09508.40 ppb
2014-04-219588-806-0855ND
2014-04-219588-807-0910ND
2014-05-139588-065-1015ND
2014-05-139588-071-0937ND
2014-05-139588-075-1031ND
2014-06-099588-065-1006ND
2014-06-099588-071-0934ND
2014-06-099588-075-1026ND
2014-07-109588-065-1000ND
2014-07-109588-075-1015ND
2014-07-159588-071-1227ND
2014-07-229588-800-09559.40 ppb
2014-07-229588-801-09406.20 ppb
2014-07-229588-802-101512.0 ppb
2014-07-229588-803-09201.50 ppb
2014-07-229588-804-09455.60 ppb
2014-07-229588-805-100510.00 ppb
2014-07-229588-806-09151.10 ppb
2014-07-229588-807-09302.50 ppb
2014-08-119588-065-0928ND
2014-08-119588-071-0846ND
2014-08-119588-075-0944ND
2014-09-109588-071-1245ND
2014-09-179588-065-0957ND
2014-09-179588-075-1017ND
2014-10-159588-065-0953ND
2014-10-159588-075-1004ND
2014-10-179588-071-1030ND
2014-10-229588-800-10108.70 ppb
2014-10-229588-801-09508.10 ppb
2014-10-229588-802-10306.80 ppb
2014-10-229588-803-09304.50 ppb
2014-10-229588-804-09555.70 ppb
2014-10-229588-805-10204.90 ppb
2014-10-229588-806-09154.90 ppb
2014-10-229588-807-09405.60 ppb
2014-11-219588-065-1021ND
2014-11-219588-071-0950ND
2014-11-219588-075-1032ND
2014-12-159588-065-1012ND
2014-12-159588-071-0940ND
2014-12-159588-075-1030ND
2015-01-199588-071-1125ND
2015-01-229588-800-10058.70 ppb
2015-01-229588-801-09458.40 ppb
2015-01-229588-802-10257.30 ppb
2015-01-229588-803-09258.80 ppb
2015-01-229588-804-09559.30 ppb
2015-01-229588-805-10157.00 ppb
2015-01-229588-806-09158.10 ppb
2015-01-229588-807-09359.00 ppb
2015-02-209588-071-1038ND
2015-03-109588-071-1030ND
2015-04-159588-071-1338ND
2015-04-219588-800-101011.0 ppb
2015-04-219588-801-095010.00 ppb
2015-04-219588-802-103010.00 ppb
2015-04-219588-803-093010.00 ppb
2015-04-219588-804-100010.00 ppb
2015-04-219588-805-102010.00 ppb
2015-04-219588-806-09209.00 ppb
2015-04-219588-807-09409.40 ppb
2015-05-019588-075-1043ND
2015-05-119588-071-0925ND
2015-06-159588-071-1055ND
2015-06-209588-075-2216ND
2015-07-159588-065-1351ND
2015-07-159588-071-1338ND
2015-07-159588-075-1405ND
2015-07-229588-800-09302.40 ppb
2015-07-229588-801-09056.40 ppb
2015-07-229588-802-094512.0 ppb
2015-07-229588-803-08451.50 ppb
2015-07-229588-804-09157.60 ppb
2015-07-229588-805-09402.70 ppb
2015-07-229588-806-08301.30 ppb
2015-07-229588-807-08552.70 ppb
2015-08-129588-065-0942ND
2015-08-129588-071-0920ND
2015-08-129588-075-0953ND
2015-09-109588-065-1132ND
2015-09-109588-075-1153ND
2015-09-119588-071-0925ND
2015-10-129588-071-1010ND
2015-10-229588-800-102012.0 ppb
2015-10-229588-801-100512.0 ppb
2015-10-229588-802-104513.0 ppb
2015-10-229588-803-093011.0 ppb
2015-10-229588-804-095511.0 ppb
2015-10-229588-805-103011.0 ppb
2015-10-229588-806-092012.0 ppb
2015-10-239588-807-07309.30 ppb
2015-11-029588-071-1046ND
2016-01-129588-071-0942ND
2016-01-229588-800-103512.0 ppb
2016-01-229588-801-101014.0 ppb
2016-01-229588-802-110513.0 ppb
2016-01-229588-803-094513.0 ppb
2016-01-229588-804-102013.0 ppb
2016-01-229588-805-105013.0 ppb
2016-01-229588-806-093013.0 ppb
2016-01-229588-807-095512.0 ppb
2016-02-089588-075-1045ND
2016-02-179588-065-1216ND
2016-02-179588-071-1145ND
2016-03-019588-065-1100ND
2016-03-019588-071-1038ND
2016-03-019588-075-1120ND
2016-04-069588-065-1341ND
2016-04-069588-071-1320ND
2016-04-069588-075-1403ND
2016-04-219588-800-1040ND
2016-04-219588-801-10201.000 ppb
2016-04-219588-802-11052.20 ppb
2016-04-219588-803-10006.80 ppb
2016-04-219588-804-10252.90 ppb
2016-04-219588-805-1050ND
2016-04-219588-806-09509.40 ppb
2016-04-219588-807-10102.60 ppb
2016-05-029588-065-1058ND
2016-05-029588-071-1001ND
2016-05-029588-075-1108ND
2016-06-279588-065-1040ND
2016-06-279588-071-0950ND
2016-06-279588-075-1057ND
2016-07-199588-065-0940ND
2016-07-199588-075-1218ND
2016-07-229588-800-09452.50 ppb
2016-07-229588-801-09204.20 ppb
2016-07-229588-802-100524.0 ppb
2016-07-229588-803-085517.0 ppb
2016-07-229588-804-093013.0 ppb
2016-07-229588-805-095522.0 ppb
2016-07-229588-806-084512.0 ppb
2016-07-229588-807-090513.0 ppb
2016-08-169588-065-1430ND
2016-08-169588-071-15201.80 ppb
2016-08-169588-075-1545ND
2016-09-199588-065-1140ND
2016-09-199588-075-1240ND
2016-10-109588-071-16281.90 ppb
2016-10-119588-065-0854ND
2016-10-119588-075-0908ND
2016-10-249588-800-10354.60 ppb
2016-10-249588-801-10107.10 ppb
2016-10-249588-802-11005.50 ppb
2016-10-249588-803-09453.00 ppb
2016-10-249588-804-10254.30 ppb
2016-10-249588-805-10453.50 ppb
2016-10-249588-806-09352.00 ppb
2016-10-249588-807-10003.80 ppb
2016-11-049588-065-1150ND
2016-11-049588-071-11351.80 ppb
2016-11-049588-075-1248ND
2016-12-139588-065-1135ND
2016-12-139588-071-10553.10 ppb
2016-12-149588-075-0710ND
2017-01-039588-065-1044ND
2017-01-039588-075-1105ND
2017-01-259588-800-10306.30 ppb
2017-01-259588-801-10057.00 ppb
2017-01-259588-802-10558.70 ppb
2017-01-259588-803-0945ND
2017-01-259588-804-10151.60 ppb
2017-01-259588-805-10409.10 ppb
2017-01-259588-806-0930ND
2017-01-259588-807-0955ND
2017-02-089588-070-0840ND
2017-02-209588-065-1125ND
2017-02-209588-075-1136ND
2017-03-079588-071-09431.90 ppb
2017-03-079588-075-1020ND
2017-03-089588-065-0945ND
2017-04-119588-065-1013ND
2017-04-119588-071-10021.60 ppb
2017-04-119588-075-1032ND
2017-04-219588-800-10155.20 ppb
2017-04-219588-801-09454.60 ppb
2017-04-219588-802-10453.80 ppb
2017-04-219588-803-09253.10 ppb
2017-04-219588-804-09555.50 ppb
2017-04-219588-805-10303.80 ppb
2017-04-219588-806-09151.40 ppb
2017-04-219588-807-09354.30 ppb
2017-05-039588-065-1125ND
2017-05-039588-071-11022.30 ppb
2017-05-039588-075-1150ND
2017-06-099588-065-0851ND
2017-06-099588-071-08421.50 ppb
2017-06-099588-075-0911ND
2017-07-119588-065-1112ND
2017-07-119588-071-10331.50 ppb
2017-07-119588-075-1135ND
2017-07-249588-800-09402.80 ppb
2017-07-249588-801-09302.60 ppb
2017-07-249588-802-10104.80 ppb
2017-07-249588-803-090011.0 ppb
2017-07-249588-804-092011.0 ppb
2017-07-249588-805-09504.00 ppb
2017-07-249588-806-0850ND
2017-07-249588-807-091013.0 ppb
2017-08-119588-065-0932ND
2017-08-119588-071-09031.60 ppb
2017-08-119588-075-0943ND
2017-09-119588-065-1150ND
2017-09-119588-071-10342.00 ppb
2017-09-119588-075-1205ND
2017-10-179588-065-0956ND
2017-10-179588-071-08522.10 ppb
2017-10-179588-075-1030ND
2017-10-239588-800-09454.80 ppb
2017-10-239588-801-09305.40 ppb
2017-10-239588-802-10005.70 ppb
2017-10-239588-803-09158.40 ppb
2017-10-239588-804-09356.90 ppb
2017-10-239588-805-09505.20 ppb
2017-10-239588-806-09056.20 ppb
2017-10-239588-807-09208.60 ppb
2017-11-179588-065-0845ND
2017-11-179588-071-08222.40 ppb
2017-11-179588-075-0910ND
2017-12-159588-065-1334ND
2017-12-159588-071-13251.90 ppb
2017-12-159588-075-1342ND
2018-01-179588-065-0901ND
2018-01-179588-071-0841ND
2018-01-179588-075-0912ND
2018-01-229588-800-10251.30 ppb
2018-01-229588-801-101010.00 ppb
2018-01-229588-802-110514.0 ppb
2018-01-229588-803-095014.0 ppb
2018-01-229588-804-104011.0 ppb
2018-01-229588-805-10509.50 ppb
2018-01-229588-806-094013.0 ppb
2018-01-229588-807-10008.90 ppb
2018-02-069588-065-1030ND
2018-02-069588-071-1018ND
2018-02-069588-075-1042ND
2018-03-079588-065-0858ND
2018-03-079588-075-0910ND
2018-03-129588-071-0915ND
2018-04-119588-065-0933ND
2018-04-119588-075-0955ND
2018-04-239588-800-110512.0 ppb
2018-04-239588-801-101012.0 ppb
2018-04-239588-802-11209.90 ppb
2018-04-239588-803-09457.50 ppb
2018-04-239588-804-105010.00 ppb
2018-04-239588-805-111511.0 ppb
2018-04-239588-806-09158.00 ppb
2018-04-239588-807-10009.60 ppb
2018-05-039588-065-1110ND
2018-05-039588-071-10351.000 ppb
2018-05-039588-075-1121ND
2018-06-019588-071-1020ND
2018-06-049588-065-0848ND
2018-06-049588-075-0900ND
2018-07-069588-065-0912ND
2018-07-069588-071-09061.10 ppb
2018-07-069588-075-0938ND
2018-07-239588-800-10459.20 ppb
2018-07-239588-801-101510.00 ppb
2018-07-239588-802-110511.0 ppb
2018-07-239588-803-09358.30 ppb
2018-07-239588-804-10309.90 ppb
2018-07-239588-805-105511.0 ppb
2018-07-239588-806-09259.90 ppb
2018-07-239588-807-09508.70 ppb
2018-08-069588-065-0856ND
2018-08-069588-075-0914ND
2018-08-079588-071-0913ND
2018-09-219588-065-0842ND
2018-09-219588-075-0903ND
2018-09-269588-071-10181.30 ppb
2018-10-029588-065-0908ND
2018-10-029588-075-0958ND
2018-10-039588-071-0855ND
2018-10-229588-800-10458.10 ppb
2018-10-229588-801-10257.50 ppb
2018-10-229588-802-11056.40 ppb
2018-10-229588-803-10004.00 ppb
2018-10-229588-804-10305.00 ppb
2018-10-229588-805-10555.70 ppb
2018-10-229588-806-094510.00 ppb
2018-10-229588-807-10152.40 ppb
2018-11-069588-065-0935ND
2018-11-069588-071-0858ND
2018-11-069588-075-1238ND
2018-12-049588-071-08431.10 ppb
2018-12-049588-075-0908ND
2018-12-129588-065-1345ND
2019-01-219588-065-0911ND
2019-01-219588-075-0921ND
2019-01-229588-800-102019.0 ppb
2019-01-229588-801-095518.0 ppb
2019-01-229588-802-105513.0 ppb
2019-01-229588-803-09351.60 ppb
2019-01-229588-804-10056.20 ppb
2019-01-229588-805-104017.0 ppb
2019-01-229588-806-09152.30 ppb
2019-01-229588-807-09453.50 ppb
2019-02-089588-065-0805ND
2019-02-089588-075-0920ND
2019-03-049588-065-1330ND
2019-03-119588-075-1215ND
2019-03-259588-075-1434ND
2019-04-089588-065-1028ND
2019-04-089588-075-1045ND
2019-04-229588-800-10254.30 ppb
2019-04-229588-801-10003.20 ppb
2019-04-229588-802-11004.30 ppb
2019-04-229588-803-0930ND
2019-04-229588-804-10101.80 ppb
2019-04-229588-805-10503.90 ppb
2019-04-229588-806-0920ND
2019-04-229588-807-09451.10 ppb
2019-05-079588-065-0853ND
2019-05-079588-075-0905ND
2019-06-109588-075-1035ND
2019-07-109588-065-1011ND
2019-07-109588-075-1025ND
2019-07-229588-800-10005.10 ppb
2019-07-229588-801-09355.40 ppb
2019-07-229588-802-10305.30 ppb
2019-07-229588-803-09054.20 ppb
2019-07-229588-804-09454.00 ppb
2019-07-229588-805-10154.80 ppb
2019-07-229588-806-08552.50 ppb
2019-07-229588-807-09204.70 ppb
2019-08-089588-065-1249ND
2019-09-129588-065-0941ND
2019-10-099588-065-1215ND
2019-10-099588-071-1200ND
2019-10-229588-800-10105.20 ppb
2019-10-229588-801-09505.10 ppb
2019-10-229588-802-10355.30 ppb
2019-10-229588-803-09255.00 ppb
2019-10-229588-804-10004.50 ppb
2019-10-229588-805-10255.20 ppb
2019-10-229588-806-09104.80 ppb
2019-10-229588-807-09355.30 ppb
2019-11-209588-065-1045ND
2019-12-129588-065-1010ND
2019-12-129588-071-1031ND