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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

San Jose Water Company

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.

 

331

Samples

0

Samples exceeding legal limit (MCL)

321

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20147.17 ppb6158ND - 16.0 ppb
201510.9 ppb31311.77 ppb - 20.4 ppb
20166.32 ppb4946ND - 11.4 ppb
20176.03 ppb6261ND - 14.0 ppb
20189.20 ppb6461ND - 20.9 ppb
20197.21 ppb64641.12 ppb - 19.7 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
2014-02-281610-900-095712.7 ppb
2014-02-281610-901-12419.10 ppb
2014-02-281610-902-090012.9 ppb
2014-02-281610-903-092612.3 ppb
2014-02-281610-904-091016.0 ppb
2014-02-281610-905-12129.10 ppb
2014-02-281610-906-102114.8 ppb
2014-02-281610-907-12257.79 ppb
2014-02-281610-908-09415.99 ppb
2014-02-281610-909-10099.02 ppb
2014-02-281610-910-10325.08 ppb
2014-02-281610-911-10546.16 ppb
2014-02-281610-912-14147.67 ppb
2014-02-281610-913-13517.99 ppb
2014-02-281610-914-13209.42 ppb
2014-02-281610-915-11100.730 ppb
2014-05-071610-900-09250.720 ppb
2014-05-071610-901-100710.5 ppb
2014-05-071610-902-075311.0 ppb
2014-05-071610-903-09132.64 ppb
2014-05-071610-904-080711.2 ppb
2014-05-071610-905-093312.7 ppb
2014-05-071610-906-1035ND
2014-05-071610-907-094310.7 ppb
2014-05-071610-908-09005.07 ppb
2014-05-071610-909-10254.17 ppb
2014-05-071610-910-105514.9 ppb
2014-05-071610-911-11164.00 ppb
2014-05-071610-912-13231.76 ppb
2014-05-071610-913-143011.5 ppb
2014-05-071610-914-142010.2 ppb
2014-05-071610-915-1235ND
2014-08-251610-901-113812.2 ppb
2014-08-251610-902-09337.60 ppb
2014-08-251610-904-09477.14 ppb
2014-08-251610-905-110812.0 ppb
2014-08-251610-907-112311.5 ppb
2014-08-251610-908-10254.23 ppb
2014-08-251610-909-115512.8 ppb
2014-08-251610-910-121710.00 ppb
2014-08-251610-911-13335.92 ppb
2014-08-251610-912-14176.43 ppb
2014-08-251610-913-14495.39 ppb
2014-08-251610-914-14386.18 ppb
2014-08-251610-915-13502.29 ppb
2014-11-071610-900-10153.71 ppb
2014-11-071610-901-10553.64 ppb
2014-11-071610-902-09096.70 ppb
2014-11-071610-903-10043.40 ppb
2014-11-071610-904-09205.80 ppb
2014-11-071610-905-10244.74 ppb
2014-11-071610-906-12223.23 ppb
2014-11-071610-907-10403.85 ppb
2014-11-071610-908-09482.32 ppb
2014-11-071610-909-11032.90 ppb
2014-11-071610-910-12438.00 ppb
2014-11-071610-911-13037.31 ppb
2014-11-071610-912-13537.49 ppb
2014-11-071610-913-14275.70 ppb
2014-11-071610-914-14117.11 ppb
2014-11-071610-915-1334ND
2015-02-061610-900-101410.5 ppb
2015-02-061610-901-09589.08 ppb
2015-02-061610-902-13062.38 ppb
2015-02-061610-903-122811.5 ppb
2015-02-061610-904-12591.77 ppb
2015-02-061610-905-092313.1 ppb
2015-02-061610-906-085810.6 ppb
2015-02-061610-907-094810.6 ppb
2015-02-061610-908-10245.96 ppb
2015-02-061610-909-091311.2 ppb
2015-02-061610-910-10416.74 ppb
2015-02-061610-911-11546.63 ppb
2015-02-061610-912-13398.09 ppb
2015-02-061610-913-14189.50 ppb
2015-02-061610-914-140010.1 ppb
2015-02-061610-915-10511.85 ppb
2015-05-291610-900-111518.1 ppb
2015-05-291610-901-13399.98 ppb
2015-05-291610-902-100020.4 ppb
2015-05-291610-903-110514.9 ppb
2015-05-291610-904-101620.4 ppb
2015-05-291610-905-131014.1 ppb
2015-05-291610-906-124012.5 ppb
2015-05-291610-907-132211.5 ppb
2015-05-291610-908-105019.3 ppb
2015-05-291610-909-125011.2 ppb
2015-05-291610-910-122711.3 ppb
2015-05-291610-911-14038.84 ppb
2015-05-291610-912-143512.5 ppb
2015-05-291610-914-145313.4 ppb
2015-05-291610-915-121610.5 ppb
2016-03-041610-005-1315ND
2016-04-011610-005-1140ND
2016-05-061610-900-09075.61 ppb
2016-05-061610-901-10274.55 ppb
2016-05-061610-902-08005.90 ppb
2016-05-061610-903-08527.81 ppb
2016-05-061610-904-08127.24 ppb
2016-05-061610-905-09457.58 ppb
2016-05-061610-906-10455.24 ppb
2016-05-061610-907-10006.74 ppb
2016-05-061610-908-083511.4 ppb
2016-05-061610-909-09256.30 ppb
2016-05-061610-910-11108.34 ppb
2016-05-061610-911-11456.91 ppb
2016-05-061610-912-13208.18 ppb
2016-05-061610-913-141510.6 ppb
2016-05-061610-914-135010.7 ppb
2016-05-061610-915-12556.93 ppb
2016-08-191610-900-11516.31 ppb
2016-08-191610-902-10268.72 ppb
2016-08-191610-903-11426.48 ppb
2016-08-191610-904-11107.69 ppb
2016-08-191610-905-13136.02 ppb
2016-08-191610-906-13505.49 ppb
2016-08-191610-907-13305.20 ppb
2016-08-191610-908-11308.80 ppb
2016-08-191610-909-13433.52 ppb
2016-08-191610-910-14109.37 ppb
2016-08-191610-911-08296.07 ppb
2016-08-191610-912-09156.73 ppb
2016-08-191610-913-09466.97 ppb
2016-08-191610-914-09387.49 ppb
2016-08-191610-915-0855ND
2016-11-011610-900-10414.97 ppb
2016-11-011610-901-11455.17 ppb
2016-11-011610-902-09438.25 ppb
2016-11-011610-903-10324.90 ppb
2016-11-011610-904-09547.38 ppb
2016-11-011610-905-11175.45 ppb
2016-11-011610-906-10504.79 ppb
2016-11-011610-907-11304.11 ppb
2016-11-011610-908-10137.34 ppb
2016-11-011610-909-11036.03 ppb
2016-11-011610-910-12318.21 ppb
2016-11-011610-911-12075.15 ppb
2016-11-011610-912-14325.59 ppb
2016-11-011610-913-13575.51 ppb
2016-11-011610-914-14126.17 ppb
2016-11-011610-915-12455.74 ppb
2017-02-101610-900-08366.01 ppb
2017-02-101610-901-09153.83 ppb
2017-02-101610-902-074310.2 ppb
2017-02-101610-903-08264.60 ppb
2017-02-101610-904-07509.81 ppb
2017-02-101610-905-08502.54 ppb
2017-02-101610-906-09435.32 ppb
2017-02-101610-907-09022.40 ppb
2017-02-101610-908-081114.0 ppb
2017-02-101610-909-09333.20 ppb
2017-02-101610-910-100012.9 ppb
2017-02-101610-911-10464.44 ppb
2017-02-101610-912-12304.56 ppb
2017-02-101610-913-13003.84 ppb
2017-02-101610-914-13004.58 ppb
2017-02-101610-915-10110.770 ppb
2017-05-151610-900-10165.20 ppb
2017-05-151610-901-13452.36 ppb
2017-05-151610-902-09035.77 ppb
2017-05-151610-903-10075.27 ppb
2017-05-151610-904-09153.91 ppb
2017-05-151610-905-13172.41 ppb
2017-05-151610-906-10325.54 ppb
2017-05-151610-907-13292.89 ppb
2017-05-151610-908-09385.90 ppb
2017-05-151610-909-10232.89 ppb
2017-05-151610-910-11154.83 ppb
2017-05-151610-911-12526.51 ppb
2017-05-151610-912-14147.66 ppb
2017-05-151610-913-14456.84 ppb
2017-05-151610-914-14357.53 ppb
2017-05-151610-915-10285.03 ppb
2017-08-141610-900-10117.87 ppb
2017-08-141610-902-09199.90 ppb
2017-08-141610-903-10007.52 ppb
2017-08-141610-904-09309.65 ppb
2017-08-141610-905-10502.29 ppb
2017-08-141610-906-10237.04 ppb
2017-08-141610-907-11112.47 ppb
2017-08-141610-908-09488.25 ppb
2017-08-141610-909-13001.40 ppb
2017-08-141610-911-12357.22 ppb
2017-08-141610-912-13187.29 ppb
2017-08-141610-913-14075.85 ppb
2017-08-141610-914-13436.88 ppb
2017-08-141610-915-12550.570 ppb
2017-11-011610-900-100910.0 ppb
2017-11-011610-901-11252.98 ppb
2017-11-011610-902-091512.2 ppb
2017-11-011610-903-10029.67 ppb
2017-11-011610-904-090011.5 ppb
2017-11-011610-905-10433.21 ppb
2017-11-011610-906-103210.3 ppb
2017-11-011610-907-10514.25 ppb
2017-11-011610-908-09508.75 ppb
2017-11-011610-909-10233.09 ppb
2017-11-011610-910-120111.4 ppb
2017-11-011610-911-12558.56 ppb
2017-11-011610-912-13377.65 ppb
2017-11-011610-913-14106.46 ppb
2017-11-011610-914-14005.84 ppb
2017-11-011610-915-1317ND
2018-02-121610-900-10587.84 ppb
2018-02-121610-901-12435.26 ppb
2018-02-121610-902-093114.2 ppb
2018-02-121610-903-10508.75 ppb
2018-02-121610-904-094015.9 ppb
2018-02-121610-905-12136.44 ppb
2018-02-121610-906-111913.7 ppb
2018-02-121610-907-12274.82 ppb
2018-02-121610-908-101112.6 ppb
2018-02-121610-909-11467.36 ppb
2018-02-121610-910-13021.54 ppb
2018-02-121610-911-13374.60 ppb
2018-02-121610-912-141611.8 ppb
2018-02-121610-913-144911.0 ppb
2018-02-121610-914-14418.48 ppb
2018-02-121610-915-1315ND
2018-05-071610-900-10225.06 ppb
2018-05-071610-901-11505.06 ppb
2018-05-071610-902-091815.4 ppb
2018-05-071610-903-10146.82 ppb
2018-05-071610-904-092914.3 ppb
2018-05-071610-905-11214.73 ppb
2018-05-071610-906-10456.30 ppb
2018-05-071610-907-11302.43 ppb
2018-05-071610-908-095514.9 ppb
2018-05-071610-909-10366.77 ppb
2018-05-071610-910-120711.8 ppb
2018-05-071610-911-13147.56 ppb
2018-05-071610-913-13488.08 ppb
2018-05-071610-914-140510.8 ppb
2018-05-071610-915-1217ND
2018-05-081610-912-12548.97 ppb
2018-08-021610-900-10047.87 ppb
2018-08-021610-901-11059.08 ppb
2018-08-021610-902-091016.6 ppb
2018-08-021610-903-09548.67 ppb
2018-08-021610-904-092016.3 ppb
2018-08-021610-905-10469.02 ppb
2018-08-021610-906-10389.91 ppb
2018-08-021610-907-10555.62 ppb
2018-08-021610-908-094113.6 ppb
2018-08-021610-909-10219.12 ppb
2018-08-021610-910-113914.7 ppb
2018-08-021610-911-13009.90 ppb
2018-08-021610-912-133110.3 ppb
2018-08-021610-913-141011.9 ppb
2018-08-021610-914-140011.1 ppb
2018-08-021610-915-1236ND
2018-11-051610-900-10556.86 ppb
2018-11-051610-901-12306.77 ppb
2018-11-051610-902-093517.9 ppb
2018-11-051610-903-10458.29 ppb
2018-11-051610-904-094720.9 ppb
2018-11-051610-905-11567.35 ppb
2018-11-051610-906-11197.94 ppb
2018-11-051610-907-12043.66 ppb
2018-11-051610-908-101117.3 ppb
2018-11-051610-909-11097.85 ppb
2018-11-051610-910-135816.9 ppb
2018-11-051610-911-14185.54 ppb
2018-11-051610-915-13421.95 ppb
2018-11-061610-912-11387.29 ppb
2018-11-061610-913-143013.4 ppb
2018-11-061610-914-141512.2 ppb
2019-02-111610-900-11072.26 ppb
2019-02-111610-901-12192.19 ppb
2019-02-111610-902-084217.1 ppb
2019-02-111610-903-10552.51 ppb
2019-02-111610-904-090216.7 ppb
2019-02-111610-905-11392.33 ppb
2019-02-111610-906-13393.36 ppb
2019-02-111610-907-12001.44 ppb
2019-02-111610-908-10079.91 ppb
2019-02-111610-909-12372.61 ppb
2019-02-111610-910-14011.16 ppb
2019-02-111610-915-14243.52 ppb
2019-02-121610-911-09559.33 ppb
2019-02-121610-912-111914.6 ppb
2019-02-121610-913-133514.1 ppb
2019-02-121610-914-132012.0 ppb
2019-05-081610-900-10303.82 ppb
2019-05-081610-901-11453.51 ppb
2019-05-081610-902-091513.1 ppb
2019-05-081610-903-10207.50 ppb
2019-05-081610-904-093112.2 ppb
2019-05-081610-905-11203.93 ppb
2019-05-081610-906-11003.77 ppb
2019-05-081610-907-11352.02 ppb
2019-05-081610-908-095115.4 ppb
2019-05-081610-909-10453.72 ppb
2019-05-081610-910-12355.95 ppb
2019-05-081610-911-12155.06 ppb
2019-05-081610-912-13106.95 ppb
2019-05-081610-913-14156.15 ppb
2019-05-081610-914-13456.32 ppb
2019-05-081610-915-12472.30 ppb
2019-08-141610-900-07095.04 ppb
2019-08-141610-901-08124.91 ppb
2019-08-141610-902-060013.5 ppb
2019-08-141610-903-07004.88 ppb
2019-08-141610-904-104613.7 ppb
2019-08-141610-905-07524.60 ppb
2019-08-141610-906-07435.06 ppb
2019-08-141610-907-08003.02 ppb
2019-08-141610-908-063912.1 ppb
2019-08-141610-909-07245.06 ppb
2019-08-141610-910-08367.31 ppb
2019-08-141610-911-09075.74 ppb
2019-08-141610-912-10287.92 ppb
2019-08-141610-913-11236.99 ppb
2019-08-141610-914-11006.67 ppb
2019-08-141610-915-08482.36 ppb
2019-11-201610-900-11309.43 ppb
2019-11-201610-901-10287.82 ppb
2019-11-201610-902-101119.7 ppb
2019-11-201610-903-11208.77 ppb
2019-11-201610-904-092215.7 ppb
2019-11-201610-905-09537.84 ppb
2019-11-201610-906-10598.63 ppb
2019-11-201610-907-10085.21 ppb
2019-11-201610-908-09292.53 ppb
2019-11-201610-909-10476.77 ppb
2019-11-201610-910-112110.4 ppb
2019-11-201610-911-11505.33 ppb
2019-11-201610-912-14085.27 ppb
2019-11-201610-913-142013.4 ppb
2019-11-201610-914-14007.75 ppb
2019-11-201610-915-13111.12 ppb