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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

San Gabriel Valley Water Company - Fontana

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

 

314

Samples

0

Samples exceeding legal limit (MCL)

99

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.89 ppb6324ND - 25.0 ppb
2015ND380ND
20161.39 ppb5715ND - 10.00 ppb
20170.330 ppb6916ND - 1.80 ppb
20182.30 ppb5224ND - 11.0 ppb
20193.28 ppb3520ND - 18.0 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
2014-01-089588-003-11305.60 ppb
2014-01-109588-001-1045ND
2014-01-159588-601-1230ND
2014-01-159588-602-1215ND
2014-01-159588-603-12452.40 ppb
2014-01-159588-604-10101.50 ppb
2014-01-159588-605-11504.50 ppb
2014-01-159588-606-110010.00 ppb
2014-01-159588-607-13204.70 ppb
2014-01-159588-608-1205ND
2014-01-229588-022-1145ND
2014-01-229588-023-1030ND
2014-01-229588-028-1110ND
2014-03-059588-020-1120ND
2014-03-199588-006-0910ND
2014-03-199588-007-1000ND
2014-03-269588-011-0900ND
2014-04-099588-601-1000ND
2014-04-099588-602-13101.10 ppb
2014-04-099588-603-1020ND
2014-04-099588-604-0810ND
2014-04-099588-605-12204.20 ppb
2014-04-099588-606-12007.20 ppb
2014-04-099588-607-10301.80 ppb
2014-04-099588-608-12402.20 ppb
2014-04-169588-043-0850ND
2014-04-169588-044-1100ND
2014-04-169588-045-1010ND
2014-04-169588-064-0920ND
2014-04-179588-014-0835ND
2014-04-179588-031-0745ND
2014-05-219588-063-0725ND
2014-05-279588-016-0925ND
2014-05-279588-040-1245ND
2014-06-109588-037-1000ND
2014-06-109588-038-085012.0 ppb
2014-06-249588-033-0800ND
2014-06-249588-042-0830ND
2014-07-099588-065-0850ND
2014-07-099588-067-1100ND
2014-07-099588-068-1000ND
2014-07-179588-601-0750ND
2014-07-179588-602-1150ND
2014-07-179588-603-08208.60 ppb
2014-07-179588-604-10163.10 ppb
2014-07-179588-605-10301.10 ppb
2014-07-179588-606-09509.60 ppb
2014-07-179588-607-08303.50 ppb
2014-07-179588-608-1130ND
2014-07-239588-026-0740ND
2014-07-239588-034-0945ND
2014-07-239588-072-0910ND
2014-07-249588-041-0800ND
2014-07-319588-024-0740ND
2014-08-069588-027-1020ND
2014-10-209588-601-094013.0 ppb
2014-10-209588-602-092012.0 ppb
2014-10-209588-603-09106.80 ppb
2014-10-209588-604-081515.0 ppb
2014-10-209588-605-084017.0 ppb
2014-10-209588-606-112525.0 ppb
2014-10-209588-607-100010.00 ppb
2014-10-209588-608-0900ND
2015-01-229588-601-1145ND
2015-01-229588-602-1130ND
2015-01-229588-603-1220ND
2015-01-229588-604-0750ND
2015-01-229588-605-1110ND
2015-01-229588-606-0850ND
2015-01-229588-607-0900ND
2015-01-229588-608-1120ND
2015-01-309588-001-0815ND
2015-01-309588-003-0915ND
2015-01-309588-011-1050ND
2015-01-309588-022-0750ND
2015-01-309588-023-0845ND
2015-01-309588-027-1030ND
2015-02-269588-007-0855ND
2015-02-269588-020-0820ND
2015-02-269588-028-0745ND
2015-03-129588-031-0800ND
2015-03-129588-044-0900ND
2015-03-129588-045-0740ND
2015-03-239588-043-0810ND
2015-03-239588-064-0750ND
2015-04-279588-026-0840ND
2015-05-119588-038-1015ND
2015-05-119588-040-1045ND
2015-05-139588-016-1130ND
2015-05-139588-033-0945ND
2015-05-139588-037-1205ND
2015-05-139588-042-0900ND
2015-05-189588-024-0800ND
2015-05-189588-065-0900ND
2015-05-189588-068-0945ND
2015-06-109588-067-0730ND
2015-06-159588-034-0800ND
2015-06-159588-041-0715ND
2015-06-159588-072-0740ND
2015-08-199588-014-1030ND
2015-10-269588-063-1000ND
2016-01-119588-601-07301.10 ppb
2016-01-119588-602-10001.000 ppb
2016-01-119588-603-0800ND
2016-01-119588-604-0710ND
2016-01-119588-605-09304.80 ppb
2016-01-119588-606-092010.00 ppb
2016-01-119588-607-0810ND
2016-01-119588-608-0945ND
2016-01-259588-001-1030ND
2016-01-259588-003-091010.00 ppb
2016-02-179588-007-0925ND
2016-02-179588-022-0900ND
2016-02-179588-023-0850ND
2016-02-179588-028-0830ND
2016-02-179588-043-1030ND
2016-02-179588-063-1005ND
2016-02-179588-064-1020ND
2016-03-149588-026-1100ND
2016-03-149588-038-09207.00 ppb
2016-03-149588-040-0900ND
2016-03-149588-068-0950ND
2016-05-049588-065-0745ND
2016-05-169588-067-1020ND
2016-05-239588-027-0910ND
2016-06-179588-601-0820ND
2016-06-179588-602-0800ND
2016-06-179588-603-0840ND
2016-06-179588-604-0710ND
2016-06-179588-605-07208.50 ppb
2016-06-179588-606-10102.30 ppb
2016-06-179588-607-08507.50 ppb
2016-06-179588-608-0740ND
2016-06-239588-033-0950ND
2016-06-239588-042-1010ND
2016-06-309588-024-0740ND
2016-06-309588-034-0820ND
2016-06-309588-041-0720ND
2016-06-309588-072-0810ND
2016-07-119588-016-1030ND
2016-07-119588-037-1000ND
2016-07-189588-601-0830ND
2016-07-189588-602-0840ND
2016-07-189588-603-1035ND
2016-07-189588-604-0820ND
2016-07-189588-605-09002.80 ppb
2016-07-189588-606-09106.80 ppb
2016-07-189588-607-10508.00 ppb
2016-07-189588-608-08502.40 ppb
2016-10-119588-601-0800ND
2016-10-119588-602-1250ND
2016-10-119588-603-0815ND
2016-10-119588-604-1110ND
2016-10-119588-605-12205.60 ppb
2016-10-119588-606-0930ND
2016-10-119588-607-08301.40 ppb
2016-10-119588-608-1235ND
2016-11-299588-035-0930ND
2017-02-019588-001-0935ND
2017-02-019588-003-08101.30 ppb
2017-02-079588-007-1030ND
2017-02-079588-027-1000ND
2017-02-079588-028-0930ND
2017-02-139588-601-12201.20 ppb
2017-02-139588-602-12101.40 ppb
2017-02-139588-603-10201.60 ppb
2017-02-139588-604-07401.30 ppb
2017-02-139588-605-11301.50 ppb
2017-02-139588-606-0920ND
2017-02-139588-607-1010ND
2017-02-139588-608-11451.000 ppb
2017-02-239588-020-1030ND
2017-02-239588-022-1040ND
2017-02-239588-023-1020ND
2017-02-249588-026-0830ND
2017-02-249588-043-0920ND
2017-02-249588-063-0930ND
2017-02-249588-064-0910ND
2017-03-319588-006-1010ND
2017-04-109588-601-0725ND
2017-04-109588-602-07401.40 ppb
2017-04-109588-603-1253ND
2017-04-109588-604-0823ND
2017-04-109588-605-0800ND
2017-04-109588-606-0843ND
2017-04-109588-607-1215ND
2017-04-109588-608-0750ND
2017-05-089588-011-1105ND
2017-05-099588-024-1005ND
2017-05-099588-041-0925ND
2017-06-139588-033-1000ND
2017-06-139588-042-0945ND
2017-06-199588-034-0910ND
2017-06-199588-072-0850ND
2017-07-109588-601-12201.30 ppb
2017-07-109588-602-1200ND
2017-07-109588-603-1000ND
2017-07-109588-604-0750ND
2017-07-109588-605-1130ND
2017-07-109588-606-0940ND
2017-07-109588-607-1020ND
2017-07-109588-608-1145ND
2017-07-269588-038-0830ND
2017-08-079588-067-1100ND
2017-08-149588-601-13101.30 ppb
2017-08-149588-602-1250ND
2017-08-149588-603-0800ND
2017-08-149588-604-1130ND
2017-08-149588-605-1145ND
2017-08-149588-606-1110ND
2017-08-149588-607-0810ND
2017-08-149588-608-1230ND
2017-09-149588-031-1320ND
2017-09-149588-044-1420ND
2017-09-149588-045-1340ND
2017-10-259588-601-0810ND
2017-10-259588-602-10201.80 ppb
2017-10-259588-603-0820ND
2017-10-259588-604-08001.30 ppb
2017-10-259588-605-09451.70 ppb
2017-10-259588-606-09301.40 ppb
2017-10-259588-607-08401.80 ppb
2017-10-259588-608-10001.50 ppb
2017-12-049588-006-1110ND
2017-12-049588-026-0830ND
2017-12-049588-038-1002ND
2017-12-049588-042-0845ND
2018-01-199588-076-08002.00 ppb
2018-01-199588-601-0740ND
2018-01-199588-602-09405.80 ppb
2018-01-199588-603-07504.10 ppb
2018-01-199588-604-07303.80 ppb
2018-01-199588-605-09006.20 ppb
2018-01-199588-606-0840ND
2018-01-199588-607-08005.00 ppb
2018-01-199588-608-09202.60 ppb
2018-03-129588-023-0940ND
2018-03-159588-006-1110ND
2018-03-159588-007-0810ND
2018-03-159588-020-0730ND
2018-03-269588-043-0950ND
2018-04-029588-601-09556.60 ppb
2018-04-029588-602-09357.10 ppb
2018-04-029588-603-10307.00 ppb
2018-04-029588-604-072511.0 ppb
2018-04-029588-605-09136.10 ppb
2018-04-029588-606-07355.20 ppb
2018-04-029588-607-10153.20 ppb
2018-04-029588-608-09244.50 ppb
2018-04-099588-040-10301.70 ppb
2018-05-219588-063-0840ND
2018-06-119588-034-1030ND
2018-06-119588-037-1130ND
2018-06-119588-068-0947ND
2018-06-119588-072-1020ND
2018-06-259588-065-0900ND
2018-07-029588-601-1030ND
2018-07-029588-602-10403.00 ppb
2018-07-029588-603-0950ND
2018-07-029588-604-07203.10 ppb
2018-07-029588-605-11104.90 ppb
2018-07-029588-606-0810ND
2018-07-029588-607-10104.10 ppb
2018-07-029588-608-1050ND
2018-07-059588-028-0750ND
2018-07-099588-033-1140ND
2018-07-179588-042-0954ND
2018-07-179588-067-1030ND
2018-07-309588-031-0800ND
2018-07-309588-037-0920ND
2018-07-309588-045-0730ND
2018-10-019588-601-0715ND
2018-10-019588-602-07355.40 ppb
2018-10-019588-603-1155ND
2018-10-019588-604-08255.60 ppb
2018-10-019588-605-08106.20 ppb
2018-10-019588-606-0910ND
2018-10-019588-607-11455.20 ppb
2018-10-019588-608-0745ND
2019-01-029588-076-10007.00 ppb
2019-01-079588-601-074018.0 ppb
2019-01-079588-602-081013.0 ppb
2019-01-079588-603-095015.0 ppb
2019-01-079588-604-084011.0 ppb
2019-01-079588-605-083015.0 ppb
2019-01-079588-606-08551.20 ppb
2019-01-079588-607-09309.80 ppb
2019-01-079588-608-08208.30 ppb
2019-04-049588-601-1040ND
2019-04-049588-602-07301.30 ppb
2019-04-049588-603-1020ND
2019-04-049588-604-0700ND
2019-04-049588-605-0750ND
2019-04-049588-606-0810ND
2019-04-049588-607-1000ND
2019-04-049588-608-07401.40 ppb
2019-06-179588-064-0915ND
2019-07-019588-601-1050ND
2019-07-019588-602-11302.20 ppb
2019-07-019588-603-10001.30 ppb
2019-07-019588-604-07101.40 ppb
2019-07-019588-605-12301.50 ppb
2019-07-019588-606-0940ND
2019-07-019588-607-09501.50 ppb
2019-07-019588-608-1210ND
2019-07-119588-043-0810ND
2019-10-079588-601-11101.70 ppb
2019-10-079588-602-1120ND
2019-10-079588-603-1050ND
2019-10-079588-604-07151.60 ppb
2019-10-079588-605-13101.20 ppb
2019-10-079588-606-0940ND
2019-10-079588-607-10401.30 ppb
2019-10-079588-608-1130ND