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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

California Water Service Co-leona Valley

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

 

240

Samples

0

Samples exceeding legal limit (MCL)

221

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.61 ppb3022ND - 12.4 ppb
20156.48 ppb4137ND - 16.5 ppb
20169.54 ppb4038ND - 30.7 ppb
201710.7 ppb4038ND - 20.0 ppb
201812.9 ppb4644ND - 29.0 ppb
201913.7 ppb4342ND - 27.8 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-01-075701-005-10272.69 ppb
2014-01-215701-008-11291.83 ppb
2014-02-115701-005-10173.08 ppb
2014-02-185701-001-1113ND
2014-02-185701-006-1123ND
2014-03-045701-005-14543.93 ppb
2014-04-085701-005-12593.34 ppb
2014-05-135701-005-11521.69 ppb
2014-05-275701-001-1212ND
2014-05-275701-006-1215ND
2014-06-105701-005-11002.31 ppb
2014-07-295701-005-123011.4 ppb
2014-08-125701-005-100212.4 ppb
2014-08-255701-001-1040ND
2014-08-255701-006-1055ND
2014-08-255701-008-10259.76 ppb
2014-09-095701-005-15404.55 ppb
2014-09-095701-800-14576.17 ppb
2014-09-095701-801-14507.16 ppb
2014-10-145701-005-14453.41 ppb
2014-10-145701-800-14024.24 ppb
2014-10-145701-801-13535.77 ppb
2014-11-185701-001-1124ND
2014-11-185701-006-1130ND
2014-11-255701-005-15553.35 ppb
2014-11-255701-800-13384.91 ppb
2014-11-255701-801-13264.62 ppb
2014-12-165701-005-12504.00 ppb
2014-12-165701-800-12194.05 ppb
2014-12-165701-801-12273.74 ppb
2015-01-135701-005-11325.73 ppb
2015-01-135701-800-11063.14 ppb
2015-01-135701-801-10582.94 ppb
2015-01-205701-008-11083.52 ppb
2015-02-105701-005-08302.21 ppb
2015-02-105701-800-08292.32 ppb
2015-02-105701-801-08292.87 ppb
2015-02-175701-001-1116ND
2015-02-175701-006-1128ND
2015-03-105701-005-09252.15 ppb
2015-03-105701-800-09272.55 ppb
2015-03-105701-801-09282.43 ppb
2015-04-075701-005-08496.26 ppb
2015-04-075701-800-08485.38 ppb
2015-04-075701-801-08485.49 ppb
2015-05-135701-005-09337.83 ppb
2015-05-135701-800-090912.1 ppb
2015-05-135701-801-09319.75 ppb
2015-05-195701-001-1028ND
2015-05-195701-006-1021ND
2015-06-095701-005-10229.60 ppb
2015-06-095701-800-095311.2 ppb
2015-06-095701-801-100811.5 ppb
2015-07-145701-005-08509.63 ppb
2015-07-145701-800-084916.5 ppb
2015-07-145701-801-085013.5 ppb
2015-08-185701-005-08366.67 ppb
2015-08-185701-008-10557.91 ppb
2015-08-185701-800-083413.5 ppb
2015-08-185701-801-083711.8 ppb
2015-09-155701-005-08437.84 ppb
2015-09-155701-800-084113.2 ppb
2015-09-155701-801-084210.1 ppb
2015-10-135701-005-10165.94 ppb
2015-10-135701-800-10147.35 ppb
2015-10-135701-801-10157.87 ppb
2015-11-095810-800-13387.80 ppb
2015-11-095810-801-13286.00 ppb
2015-12-155701-005-08003.32 ppb
2015-12-155701-800-07593.96 ppb
2015-12-155701-801-07593.85 ppb
2016-01-065701-005-09104.35 ppb
2016-01-065701-800-09112.10 ppb
2016-01-065701-801-09114.19 ppb
2016-01-195701-008-15001.93 ppb
2016-02-095701-005-09054.32 ppb
2016-02-095701-800-09053.67 ppb
2016-02-095701-801-09053.22 ppb
2016-03-085701-005-09113.08 ppb
2016-03-085701-800-09103.70 ppb
2016-03-085701-801-09113.64 ppb
2016-04-125701-005-085821.5 ppb
2016-04-125701-800-08579.01 ppb
2016-04-125701-801-08579.19 ppb
2016-05-105701-005-091614.8 ppb
2016-05-105810-800-110622.0 ppb
2016-05-105810-801-105622.0 ppb
2016-05-245701-001-1244ND
2016-05-245701-006-1238ND
2016-06-145701-005-08196.98 ppb
2016-06-145701-800-081821.7 ppb
2016-06-145701-801-081930.7 ppb
2016-07-125701-005-082713.3 ppb
2016-07-125701-800-082524.0 ppb
2016-07-125701-801-082622.4 ppb
2016-08-039590-008-104514.0 ppb
2016-08-095701-005-093711.8 ppb
2016-08-095701-800-093818.5 ppb
2016-08-095701-801-093915.5 ppb
2016-09-135701-005-08375.48 ppb
2016-09-135701-800-083510.5 ppb
2016-09-135701-801-08363.18 ppb
2016-10-185701-005-09364.13 ppb
2016-10-185701-800-09357.02 ppb
2016-10-185701-801-09362.96 ppb
2016-11-155701-005-08486.70 ppb
2016-11-155701-800-08484.61 ppb
2016-11-155701-801-08496.50 ppb
2016-12-135810-005-11138.40 ppb
2016-12-135810-800-12005.80 ppb
2016-12-135810-801-11404.60 ppb
2017-01-175810-005-12586.30 ppb
2017-01-175810-800-13525.60 ppb
2017-01-175810-801-13375.70 ppb
2017-01-245701-008-15067.87 ppb
2017-02-145701-005-09458.30 ppb
2017-02-145701-800-094212.9 ppb
2017-02-145701-801-094312.4 ppb
2017-03-145810-005-100511.0 ppb
2017-03-145701-800-082715.7 ppb
2017-03-145701-801-08288.42 ppb
2017-04-035701-005-08179.12 ppb
2017-04-035701-800-081710.9 ppb
2017-04-035701-801-08186.86 ppb
2017-05-025701-001-1245ND
2017-05-025701-006-1241ND
2017-05-095701-005-09556.29 ppb
2017-05-095701-800-095315.5 ppb
2017-05-095701-801-095410.00 ppb
2017-06-135810-005-124612.0 ppb
2017-06-135810-800-115719.0 ppb
2017-06-135810-801-121013.0 ppb
2017-07-115810-005-10246.80 ppb
2017-07-115810-800-114316.0 ppb
2017-07-115810-801-095612.0 ppb
2017-08-085810-005-10259.70 ppb
2017-08-085810-800-111820.0 ppb
2017-08-085810-801-105816.0 ppb
2017-08-225701-008-15259.36 ppb
2017-09-125810-005-145211.0 ppb
2017-09-125810-800-141113.0 ppb
2017-09-125810-801-135314.0 ppb
2017-10-105810-005-15009.90 ppb
2017-10-105810-800-133112.0 ppb
2017-10-105810-801-131714.0 ppb
2017-11-135810-005-130310.00 ppb
2017-11-135810-800-135817.0 ppb
2017-11-135810-801-141914.0 ppb
2017-12-125701-005-08509.25 ppb
2017-12-125701-800-08509.00 ppb
2017-12-125701-801-08507.54 ppb
2018-01-095810-005-112018.0 ppb
2018-01-095701-008-11082.71 ppb
2018-01-095810-800-122814.0 ppb
2018-01-095810-801-120212.0 ppb
2018-02-135810-005-110718.0 ppb
2018-02-135810-800-131929.0 ppb
2018-02-135810-801-125927.0 ppb
2018-03-015701-800-080417.2 ppb
2018-03-015701-800-154514.0 ppb
2018-03-015701-801-080613.4 ppb
2018-03-015701-801-08072.70 ppb
2018-03-135701-005-124616.5 ppb
2018-03-135701-800-124821.4 ppb
2018-03-135701-801-124820.7 ppb
2018-04-105701-005-081417.1 ppb
2018-04-105701-800-081320.9 ppb
2018-04-105701-801-081313.5 ppb
2018-05-155701-001-1052ND
2018-05-155701-005-094013.9 ppb
2018-05-155701-006-1038ND
2018-05-155701-800-094118.4 ppb
2018-05-155701-801-094115.7 ppb
2018-06-125701-005-082912.3 ppb
2018-06-125701-800-082822.6 ppb
2018-06-125701-801-082814.7 ppb
2018-07-175701-005-153816.3 ppb
2018-07-175701-800-150516.0 ppb
2018-07-175701-801-151818.7 ppb
2018-08-145701-005-100414.2 ppb
2018-08-145701-800-100419.9 ppb
2018-08-145701-801-100421.3 ppb
2018-08-215701-008-13374.16 ppb
2018-09-185701-005-08305.21 ppb
2018-09-185701-800-082916.6 ppb
2018-09-185701-801-083013.1 ppb
2018-10-025701-005-09105.87 ppb
2018-10-025701-800-09099.99 ppb
2018-10-025701-801-091011.2 ppb
2018-10-305810-800-15381.20 ppb
2018-10-305810-801-15193.20 ppb
2018-11-135701-005-10053.20 ppb
2018-11-135701-800-10065.58 ppb
2018-11-135701-801-10063.31 ppb
2018-12-115701-005-135013.3 ppb
2018-12-115701-800-13517.19 ppb
2018-12-115701-801-13516.76 ppb
2019-01-085701-005-081314.4 ppb
2019-01-085701-800-081410.9 ppb
2019-01-085701-801-081410.9 ppb
2019-01-225810-008-11258.50 ppb
2019-02-125810-005-11099.40 ppb
2019-02-125810-800-122912.0 ppb
2019-02-125810-801-120812.0 ppb
2019-03-125701-005-090719.8 ppb
2019-03-125701-800-090817.7 ppb
2019-03-125701-801-090824.9 ppb
2019-04-095701-005-151810.2 ppb
2019-04-095701-800-101427.8 ppb
2019-04-095701-801-100110.6 ppb
2019-05-145701-005-10128.96 ppb
2019-05-145701-800-101123.9 ppb
2019-05-145701-801-101123.8 ppb
2019-06-105701-800-101822.8 ppb
2019-06-105701-801-101821.9 ppb
2019-06-115701-800-101815.0 ppb
2019-06-115701-801-140016.0 ppb
2019-06-255701-005-11468.56 ppb
2019-06-255701-800-115710.2 ppb
2019-06-255701-801-11309.86 ppb
2019-07-165701-005-095913.5 ppb
2019-07-165701-800-120715.7 ppb
2019-07-165701-801-115313.2 ppb
2019-08-135701-005-125211.3 ppb
2019-08-135701-800-131915.7 ppb
2019-08-135701-801-133914.2 ppb
2019-08-205701-008-083913.5 ppb
2019-09-175701-005-12329.79 ppb
2019-09-175701-800-125318.9 ppb
2019-09-175701-801-130411.1 ppb
2019-10-155701-001-1500ND
2019-10-155701-005-151010.5 ppb
2019-10-155701-800-13548.30 ppb
2019-10-155701-801-133911.5 ppb
2019-11-125701-005-122612.9 ppb
2019-11-125701-800-135514.1 ppb
2019-11-125701-801-140811.2 ppb
2019-12-105701-005-145516.2 ppb
2019-12-105701-800-14459.25 ppb
2019-12-105701-801-14318.60 ppb