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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

City of Tracy

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

 

239

Samples

0

Samples exceeding legal limit (MCL)

97

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20147.30 ppb4619ND - 34.0 ppb
20158.01 ppb3417ND - 50.0 ppb
20162.01 ppb4014ND - 11.0 ppb
20170.962 ppb4513ND - 5.60 ppb
20182.72 ppb4115ND - 16.0 ppb
20196.16 ppb3319ND - 31.0 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
2014-01-279590-900-1049ND
2014-01-279590-901-0923ND
2014-01-279590-902-0904ND
2014-01-279590-903-1349ND
2014-01-279590-904-1408ND
2014-01-279590-905-1304ND
2014-01-279590-906-1334ND
2014-01-279590-907-0946ND
2014-04-079590-900-10581.60 ppb
2014-04-079590-901-1002ND
2014-04-079590-902-0945ND
2014-04-079590-903-1214ND
2014-04-079590-904-1253ND
2014-04-079590-905-1233ND
2014-04-079590-906-1038ND
2014-04-079590-907-1018ND
2014-04-289590-008-140811.0 ppb
2014-05-299590-008-094926.0 ppb
2014-06-169590-003-0802ND
2014-06-169590-005-0732ND
2014-06-169590-006-0745ND
2014-06-169590-008-083131.0 ppb
2014-06-179590-018-0817ND
2014-06-179590-030-0756ND
2014-06-179590-034-0733ND
2014-06-199590-008-110528.0 ppb
2014-07-239590-900-133920.0 ppb
2014-07-239590-901-11213.90 ppb
2014-07-239590-902-1101ND
2014-07-239590-903-123718.0 ppb
2014-07-239590-904-1306ND
2014-07-239590-905-11451.80 ppb
2014-07-239590-906-121621.0 ppb
2014-07-239590-907-143018.0 ppb
2014-08-069590-008-104434.0 ppb
2014-09-049590-004-0737ND
2014-10-019590-032-0746ND
2014-10-289590-900-135423.0 ppb
2014-10-289590-901-12571.60 ppb
2014-10-289590-902-1238ND
2014-10-289590-903-143320.0 ppb
2014-10-289590-904-1451ND
2014-10-289590-905-15095.90 ppb
2014-10-289590-906-141620.0 ppb
2014-10-289590-907-132026.0 ppb
2014-10-309590-008-132525.0 ppb
2015-01-219590-900-105819.0 ppb
2015-01-219590-901-0910ND
2015-01-219590-902-0850ND
2015-01-219590-903-1132ND
2015-01-219590-904-1222ND
2015-01-219590-905-1151ND
2015-01-219590-906-0937ND
2015-01-219590-907-09591.10 ppb
2015-04-219590-900-13251.30 ppb
2015-04-219590-901-08047.70 ppb
2015-04-219590-902-1215ND
2015-04-219590-903-1024ND
2015-04-219590-904-1142ND
2015-04-219590-905-1111ND
2015-04-219590-906-0912ND
2015-04-219590-907-0848ND
2015-06-109590-008-104050.0 ppb
2015-07-169590-900-085623.0 ppb
2015-07-169590-901-074723.0 ppb
2015-07-169590-902-0728ND
2015-07-169590-903-09411.30 ppb
2015-07-169590-904-1002ND
2015-07-169590-905-1026ND
2015-07-169590-906-092313.0 ppb
2015-07-169590-907-081628.0 ppb
2015-08-249590-008-1222ND
2015-10-089590-900-102726.0 ppb
2015-10-089590-901-093022.0 ppb
2015-10-089590-902-0906ND
2015-10-089590-903-12431.30 ppb
2015-10-089590-904-13023.90 ppb
2015-10-089590-905-13219.80 ppb
2015-10-089590-906-105025.0 ppb
2015-10-089590-907-095117.0 ppb
2016-01-279590-900-11091.10 ppb
2016-01-279590-901-0830ND
2016-01-279590-902-0806ND
2016-01-279590-903-0941ND
2016-01-279590-904-1027ND
2016-01-279590-905-1001ND
2016-01-279590-906-0919ND
2016-01-279590-907-0853ND
2016-04-209590-900-11108.00 ppb
2016-04-209590-901-09548.60 ppb
2016-04-209590-902-1307ND
2016-04-209590-903-1202ND
2016-04-209590-904-1240ND
2016-04-209590-905-1221ND
2016-04-209590-906-10412.20 ppb
2016-04-209590-907-10204.10 ppb
2016-06-299590-018-0750ND
2016-06-299590-032-0820ND
2016-07-119590-900-09207.90 ppb
2016-07-119590-901-08188.90 ppb
2016-07-119590-902-1140ND
2016-07-119590-903-1034ND
2016-07-119590-904-1112ND
2016-07-119590-905-1050ND
2016-07-119590-906-10123.80 ppb
2016-07-119590-907-09476.10 ppb
2016-07-209590-008-100011.0 ppb
2016-08-049590-003-0706ND
2016-08-049590-004-0651ND
2016-08-049590-006-0725ND
2016-09-149590-034-0812ND
2016-09-229590-005-0825ND
2016-10-059590-900-10242.70 ppb
2016-10-059590-901-083010.00 ppb
2016-10-059590-902-0750ND
2016-10-059590-903-1049ND
2016-10-059590-904-1107ND
2016-10-059590-905-1125ND
2016-10-059590-906-09002.90 ppb
2016-10-059590-907-09483.10 ppb
2017-01-059590-900-0845ND
2017-01-059590-901-0939ND
2017-01-059590-902-0922ND
2017-01-059590-903-1039ND
2017-01-059590-904-1112ND
2017-01-059590-905-1053ND
2017-01-059590-906-1024ND
2017-01-059590-907-1000ND
2017-03-089590-030-1230ND
2017-04-049590-900-0935ND
2017-04-049590-901-0853ND
2017-04-049590-902-1256ND
2017-04-049590-903-1145ND
2017-04-049590-904-1205ND
2017-04-049590-905-1232ND
2017-04-049590-906-1128ND
2017-04-049590-907-1111ND
2017-06-289590-008-1158ND
2017-06-289590-018-0714ND
2017-06-289590-032-0814ND
2017-06-289590-034-0742ND
2017-07-109590-900-09525.20 ppb
2017-07-109590-901-09143.60 ppb
2017-07-109590-902-0850ND
2017-07-109590-903-1109ND
2017-07-109590-904-1128ND
2017-07-109590-905-1224ND
2017-07-109590-906-10525.10 ppb
2017-07-109590-907-10324.40 ppb
2017-08-169590-900-11221.90 ppb
2017-08-169590-901-12421.80 ppb
2017-08-169590-906-12111.40 ppb
2017-08-169590-907-11512.50 ppb
2017-09-149590-003-0749ND
2017-09-149590-004-0738ND
2017-09-149590-005-0814ND
2017-09-149590-006-08241.30 ppb
2017-10-099590-900-11175.60 ppb
2017-10-099590-901-1159ND
2017-10-099590-902-0811ND
2017-10-099590-903-09392.20 ppb
2017-10-099590-904-0858ND
2017-10-099590-905-0839ND
2017-10-099590-906-10023.50 ppb
2017-10-099590-907-10184.80 ppb
2018-01-229590-901-0933ND
2018-01-229590-902-0910ND
2018-01-229590-903-1216ND
2018-01-229590-904-1142ND
2018-01-229590-905-1232ND
2018-01-229590-906-1022ND
2018-01-229590-907-1000ND
2018-01-309590-900-1055ND
2018-04-029590-900-09584.90 ppb
2018-04-029590-901-0842ND
2018-04-029590-902-0818ND
2018-04-029590-903-1033ND
2018-04-029590-904-1114ND
2018-04-029590-905-1150ND
2018-04-029590-906-0923ND
2018-04-029590-907-09032.80 ppb
2018-06-069590-018-0657ND
2018-06-069590-032-0750ND
2018-06-079590-003-0753ND
2018-06-079590-004-0741ND
2018-06-139590-034-0856ND
2018-06-219590-034-0747ND
2018-07-099590-900-08328.50 ppb
2018-07-099590-901-10187.20 ppb
2018-07-099590-902-0951ND
2018-07-099590-903-10044.30 ppb
2018-07-099590-904-1048ND
2018-07-099590-905-11242.40 ppb
2018-07-099590-906-09165.80 ppb
2018-07-099590-907-08567.20 ppb
2018-07-119590-005-0825ND
2018-07-119590-006-0758ND
2018-07-119590-008-0832ND
2018-10-109590-900-102016.0 ppb
2018-10-109590-901-083212.0 ppb
2018-10-109590-902-0817ND
2018-10-109590-903-114414.0 ppb
2018-10-109590-904-11251.20 ppb
2018-10-109590-905-11581.20 ppb
2018-10-109590-906-095216.0 ppb
2018-10-109590-907-09208.10 ppb
2019-01-109590-900-102731.0 ppb
2019-01-109590-901-085622.0 ppb
2019-01-109590-902-0837ND
2019-01-109590-903-120922.0 ppb
2019-01-109590-904-11302.40 ppb
2019-01-109590-905-12225.00 ppb
2019-01-109590-906-095726.0 ppb
2019-01-109590-907-092917.0 ppb
2019-04-019590-900-10193.00 ppb
2019-04-019590-901-0857ND
2019-04-019590-902-0839ND
2019-04-019590-903-0840ND
2019-04-019590-904-1046ND
2019-04-019590-905-0856ND
2019-04-019590-906-0946ND
2019-04-019590-907-0926ND
2019-06-049590-008-1025ND
2019-07-089590-900-094010.00 ppb
2019-07-089590-901-08017.00 ppb
2019-07-089590-902-0742ND
2019-07-089590-903-10288.40 ppb
2019-07-089590-904-1010ND
2019-07-089590-905-10443.10 ppb
2019-07-089590-906-08466.70 ppb
2019-07-089590-907-08254.00 ppb
2019-10-109590-901-12027.60 ppb
2019-10-109590-902-1136ND
2019-10-109590-907-12323.20 ppb
2019-10-149590-900-083514.0 ppb
2019-10-149590-903-09433.90 ppb
2019-10-149590-904-0911ND
2019-10-149590-905-1008ND
2019-10-149590-906-12587.10 ppb