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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Cucamonga Valley Water District

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

 

279

Samples

0

Samples exceeding legal limit (MCL)

147

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20149.28 ppb6023ND - 46.0 ppb
20159.47 ppb3727ND - 45.0 ppb
20167.48 ppb3519ND - 44.0 ppb
20174.56 ppb5226ND - 46.0 ppb
20185.94 ppb6128ND - 23.0 ppb
20199.66 ppb3424ND - 40.0 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
2014-01-099590-601-120024.0 ppb
2014-01-099590-602-105020.0 ppb
2014-01-099590-603-114521.0 ppb
2014-01-099590-604-092034.0 ppb
2014-01-099590-605-094035.0 ppb
2014-01-099590-606-112546.0 ppb
2014-01-099590-607-111021.0 ppb
2014-01-099590-608-1010ND
2014-02-273761-038-1255ND
2014-04-019590-601-120738.0 ppb
2014-04-019590-602-1049ND
2014-04-019590-603-114525.0 ppb
2014-04-019590-604-0855ND
2014-04-019590-605-0912ND
2014-04-019590-606-110016.0 ppb
2014-04-019590-607-10065.90 ppb
2014-04-019590-608-0945ND
2014-05-293761-033-0940ND
2014-06-053761-027-1045ND
2014-06-193761-050-1035ND
2014-06-193761-051-0000ND
2014-06-193761-052-0930ND
2014-06-193761-053-0925ND
2014-06-193761-054-0940ND
2014-06-263761-008-1015ND
2014-06-263761-010-1103ND
2014-06-263761-029-1052ND
2014-06-263761-034-1042ND
2014-06-263761-035-1007ND
2014-06-263761-038-1022ND
2014-07-079590-601-104028.0 ppb
2014-07-079590-602-092512.0 ppb
2014-07-079590-603-081234.0 ppb
2014-07-079590-604-0825ND
2014-07-079590-605-0840ND
2014-07-079590-606-101028.0 ppb
2014-07-079590-607-095014.0 ppb
2014-07-079590-608-0905ND
2014-07-103761-002-1103ND
2014-07-103761-003-1052ND
2014-07-103761-004-1022ND
2014-07-103761-025-1042ND
2014-07-103761-037-1007ND
2014-07-103761-042-1015ND
2014-08-053761-055-1150ND
2014-08-143761-001-0917ND
2014-08-143761-022-0842ND
2014-08-183761-033-1050ND
2014-09-043761-027-1010ND
2014-10-069590-601-113434.0 ppb
2014-10-069590-602-083511.0 ppb
2014-10-069590-603-112040.0 ppb
2014-10-069590-604-11025.80 ppb
2014-10-069590-605-10406.90 ppb
2014-10-069590-606-082043.0 ppb
2014-10-069590-607-085014.0 ppb
2014-10-069590-608-0920ND
2014-10-163761-039-1050ND
2014-11-203761-033-1145ND
2014-12-093761-027-1040ND
2015-01-059590-601-124521.0 ppb
2015-01-059590-602-09051.40 ppb
2015-01-059590-603-122036.0 ppb
2015-01-059590-604-11507.60 ppb
2015-01-059590-605-11308.20 ppb
2015-01-059590-606-11104.20 ppb
2015-01-059590-607-10155.80 ppb
2015-01-059590-608-1030ND
2015-03-053761-027-0855ND
2015-04-019590-601-115520.0 ppb
2015-04-019590-602-11091.10 ppb
2015-04-019590-603-083528.0 ppb
2015-04-019590-604-08522.10 ppb
2015-04-019590-605-09402.80 ppb
2015-04-019590-606-112526.0 ppb
2015-04-019590-607-10578.80 ppb
2015-04-019590-608-1012ND
2015-05-133761-055-1050ND
2015-07-029590-601-105016.0 ppb
2015-07-029590-602-10151.10 ppb
2015-07-029590-603-083017.0 ppb
2015-07-029590-604-08351.80 ppb
2015-07-029590-605-08402.10 ppb
2015-07-029590-606-10309.70 ppb
2015-07-029590-607-10053.50 ppb
2015-07-029590-608-0945ND
2015-07-093761-017-1100ND
2015-08-203761-055-0925ND
2015-10-069590-601-130027.0 ppb
2015-10-069590-602-093022.0 ppb
2015-10-069590-603-080045.0 ppb
2015-10-069590-604-0815ND
2015-10-069590-605-08404.90 ppb
2015-10-069590-606-102021.0 ppb
2015-10-069590-607-09556.20 ppb
2015-10-069590-608-0900ND
2015-11-233761-055-0900ND
2016-01-069590-601-133510.00 ppb
2016-01-069590-602-0930ND
2016-01-069590-603-08105.40 ppb
2016-01-069590-604-0815ND
2016-01-069590-605-0840ND
2016-01-069590-606-1020ND
2016-01-069590-607-09551.40 ppb
2016-01-069590-608-0900ND
2016-02-113761-055-1040ND
2016-04-059590-601-114521.0 ppb
2016-04-059590-602-1035ND
2016-04-059590-603-082428.0 ppb
2016-04-059590-604-08422.80 ppb
2016-04-059590-605-09109.60 ppb
2016-04-059590-606-11075.70 ppb
2016-04-059590-607-10506.20 ppb
2016-04-059590-608-09455.20 ppb
2016-07-069590-601-131023.0 ppb
2016-07-069590-602-1035ND
2016-07-069590-603-082044.0 ppb
2016-07-069590-604-08261.000 ppb
2016-07-069590-605-08401.20 ppb
2016-07-069590-606-115536.0 ppb
2016-07-069590-607-1130ND
2016-07-069590-608-0925ND
2016-07-213761-017-1120ND
2016-10-059590-601-112013.0 ppb
2016-10-059590-602-1055ND
2016-10-059590-603-081023.0 ppb
2016-10-059590-604-0825ND
2016-10-059590-605-08551.30 ppb
2016-10-059590-606-103024.0 ppb
2016-10-059590-607-1010ND
2016-10-059590-608-0910ND
2016-11-233761-035-1440ND
2017-01-099590-601-112023.0 ppb
2017-01-099590-602-105510.00 ppb
2017-01-099590-603-081046.0 ppb
2017-01-099590-604-082523.0 ppb
2017-01-099590-605-085515.0 ppb
2017-01-099590-606-103045.0 ppb
2017-01-099590-607-101019.0 ppb
2017-01-099590-608-0910ND
2017-04-059590-601-11001.80 ppb
2017-04-059590-602-09551.40 ppb
2017-04-059590-603-10451.80 ppb
2017-04-059590-604-08272.00 ppb
2017-04-059590-605-08451.90 ppb
2017-04-059590-606-10201.60 ppb
2017-04-059590-607-09352.10 ppb
2017-04-059590-608-0915ND
2017-06-023761-027-0918ND
2017-06-143761-035-0930ND
2017-06-143761-038-1026ND
2017-06-143761-039-0959ND
2017-06-153761-008-0931ND
2017-06-153761-033-1047ND
2017-06-153761-034-0910ND
2017-06-193761-042-0859ND
2017-06-193761-053-0908ND
2017-06-223761-003-0806ND
2017-06-223761-025-0818ND
2017-06-223761-052-0913ND
2017-06-223761-053-0902ND
2017-06-263761-002-0929ND
2017-06-263761-054-1041ND
2017-07-033761-055-1041ND
2017-07-069590-601-11133.30 ppb
2017-07-069590-602-1028ND
2017-07-069590-603-10593.80 ppb
2017-07-069590-604-0913ND
2017-07-069590-605-0927ND
2017-07-069590-606-10404.10 ppb
2017-07-069590-607-10141.20 ppb
2017-07-069590-608-0955ND
2017-07-123761-017-1408ND
2017-07-133761-010-1305ND
2017-07-133761-029-1319ND
2017-07-173761-004-1231ND
2017-10-059590-601-12413.50 ppb
2017-10-059590-602-11403.30 ppb
2017-10-059590-603-12184.10 ppb
2017-10-059590-604-10164.20 ppb
2017-10-059590-605-10354.40 ppb
2017-10-059590-606-11524.10 ppb
2017-10-059590-607-11254.10 ppb
2017-10-059590-608-10593.60 ppb
2018-01-119590-601-120112.0 ppb
2018-01-119590-602-10585.80 ppb
2018-01-119590-603-113818.0 ppb
2018-01-119590-604-0913ND
2018-01-119590-605-0933ND
2018-01-119590-606-111511.0 ppb
2018-01-119590-607-10389.40 ppb
2018-01-119590-608-101910.00 ppb
2018-03-143761-016-1008ND
2018-03-143761-023-1149ND
2018-03-283761-024-0931ND
2018-04-059590-601-1121ND
2018-04-059590-602-10281.30 ppb
2018-04-059590-603-110516.0 ppb
2018-04-059590-604-08312.70 ppb
2018-04-059590-605-091111.0 ppb
2018-04-059590-606-104323.0 ppb
2018-04-059590-607-101113.0 ppb
2018-04-059590-608-0949ND
2018-06-209588-008-1044ND
2018-06-209588-027-1105ND
2018-06-209588-029-1228ND
2018-06-209588-034-1200ND
2018-06-209588-038-1138ND
2018-06-219588-003-0848ND
2018-06-219588-025-0832ND
2018-06-219588-037-0914ND
2018-06-219588-050-1244ND
2018-06-219588-051-0815ND
2018-06-259588-004-0941ND
2018-06-259588-035-1127ND
2018-06-269588-052-0925ND
2018-06-269588-053-1000ND
2018-06-269588-054-1035ND
2018-06-279588-033-1020ND
2018-06-279588-055-1140ND
2018-07-039588-010-0917ND
2018-07-099588-601-124513.0 ppb
2018-07-099588-602-110711.0 ppb
2018-07-099588-603-114014.0 ppb
2018-07-099588-604-094518.0 ppb
2018-07-099588-605-100617.0 ppb
2018-07-099588-606-112017.0 ppb
2018-07-099588-607-105012.0 ppb
2018-07-099588-608-10302.30 ppb
2018-07-119588-002-1000ND
2018-07-119588-042-0950ND
2018-07-129588-017-1214ND
2018-07-189588-001-0950ND
2018-07-189588-022-1010ND
2018-07-269588-016-0846ND
2018-07-269588-023-0912ND
2018-07-269588-024-0904ND
2018-10-099588-601-141416.0 ppb
2018-10-099588-602-111211.0 ppb
2018-10-099588-603-134917.0 ppb
2018-10-099588-604-071817.0 ppb
2018-10-099588-605-075616.0 ppb
2018-10-099588-606-124619.0 ppb
2018-10-099588-607-105714.0 ppb
2018-10-099588-608-095215.0 ppb
2019-01-099588-601-114723.0 ppb
2019-01-099588-602-105525.0 ppb
2019-01-099588-603-113140.0 ppb
2019-01-099588-604-080035.0 ppb
2019-01-099588-605-091131.0 ppb
2019-01-099588-606-111027.0 ppb
2019-01-099588-607-100524.0 ppb
2019-01-099588-608-093726.0 ppb
2019-04-049588-601-09202.70 ppb
2019-04-049588-602-08205.90 ppb
2019-04-049588-603-09005.00 ppb
2019-04-049588-604-07005.40 ppb
2019-04-049588-605-07206.30 ppb
2019-04-049588-606-08408.10 ppb
2019-04-049588-607-0800ND
2019-04-049588-608-07405.50 ppb
2019-07-019588-017-0945ND
2019-07-089588-601-12103.50 ppb
2019-07-089588-602-10551.90 ppb
2019-07-089588-603-11457.00 ppb
2019-07-089588-604-0930ND
2019-07-089588-605-0950ND
2019-07-089588-606-112014.0 ppb
2019-07-089588-607-103514.0 ppb
2019-07-089588-608-10155.10 ppb
2019-07-249588-017-1115ND
2019-10-079588-601-12102.30 ppb
2019-10-079588-602-1055ND
2019-10-079588-603-11455.00 ppb
2019-10-079588-604-0915ND
2019-10-079588-605-0940ND
2019-10-079588-606-11205.60 ppb
2019-10-079588-607-1035ND
2019-10-079588-608-1015ND