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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

East Valley Water District

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

 

392

Samples

0

Samples exceeding legal limit (MCL)

333

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20147.26 ppb7873ND - 23.1 ppb
20159.41 ppb4541ND - 25.4 ppb
20169.39 ppb6244ND - 42.5 ppb
20174.94 ppb6157ND - 16.0 ppb
20189.85 ppb7769ND - 34.5 ppb
201910.1 ppb6949ND - 27.7 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
2014-01-303761-601-083510.00 ppb
2014-01-303761-602-08205.70 ppb
2014-01-303761-603-07559.30 ppb
2014-01-303761-604-08102.30 ppb
2014-01-303761-605-08456.90 ppb
2014-01-303761-606-09006.60 ppb
2014-01-303761-607-091012.9 ppb
2014-01-303761-608-074510.6 ppb
2014-02-213761-036-0745ND
2014-02-273761-601-08157.10 ppb
2014-02-273761-602-07554.10 ppb
2014-02-273761-603-09006.70 ppb
2014-02-273761-604-07404.50 ppb
2014-02-273761-605-08254.50 ppb
2014-02-273761-607-08403.70 ppb
2014-02-273761-608-08106.10 ppb
2014-04-183761-002-09456.40 ppb
2014-05-223761-601-094212.4 ppb
2014-05-223761-602-09592.00 ppb
2014-05-223761-603-08355.50 ppb
2014-05-223761-604-10122.20 ppb
2014-05-223761-605-09328.10 ppb
2014-05-223761-606-09137.90 ppb
2014-05-223761-607-08576.10 ppb
2014-05-223761-608-08199.80 ppb
2014-07-153761-002-115510.8 ppb
2014-07-233761-028-1130ND
2014-07-313761-601-100610.9 ppb
2014-07-313761-602-09339.90 ppb
2014-07-313761-603-095317.0 ppb
2014-07-313761-604-09171.20 ppb
2014-07-313761-605-110516.3 ppb
2014-07-313761-606-113716.2 ppb
2014-07-313761-607-1054ND
2014-07-313761-608-11247.00 ppb
2014-08-063761-002-103523.1 ppb
2014-08-223761-601-08488.00 ppb
2014-08-223761-602-080114.0 ppb
2014-08-223761-603-09088.40 ppb
2014-08-223761-604-07452.70 ppb
2014-08-223761-605-08595.10 ppb
2014-08-223761-606-092213.7 ppb
2014-08-223761-607-0958ND
2014-08-223761-608-08368.30 ppb
2014-09-033761-002-101519.0 ppb
2014-09-193761-601-08427.30 ppb
2014-09-193761-602-07499.90 ppb
2014-09-193761-603-08527.70 ppb
2014-09-193761-604-07331.90 ppb
2014-09-193761-605-082910.3 ppb
2014-09-193761-606-08159.40 ppb
2014-09-193761-607-0917ND
2014-09-193761-608-08008.40 ppb
2014-10-073761-002-11252.20 ppb
2014-10-173761-601-07589.30 ppb
2014-10-173761-602-07304.20 ppb
2014-10-173761-603-08219.70 ppb
2014-10-173761-604-07132.30 ppb
2014-10-173761-605-08129.20 ppb
2014-10-173761-606-08539.60 ppb
2014-10-173761-607-08405.20 ppb
2014-10-173761-608-07498.00 ppb
2014-11-203761-601-10049.00 ppb
2014-11-203761-602-09132.20 ppb
2014-11-203761-603-09244.60 ppb
2014-11-203761-604-08452.70 ppb
2014-11-203761-605-09407.70 ppb
2014-11-203761-606-10198.30 ppb
2014-11-203761-608-09549.40 ppb
2014-12-023761-002-09408.80 ppb
2014-12-153761-601-10298.20 ppb
2014-12-153761-602-10091.50 ppb
2014-12-153761-603-10461.50 ppb
2014-12-153761-604-09522.50 ppb
2014-12-153761-605-10397.10 ppb
2014-12-153761-606-10559.30 ppb
2014-12-153761-607-11086.30 ppb
2014-12-153761-608-10209.30 ppb
2015-01-063761-002-10005.90 ppb
2015-01-223761-601-09356.90 ppb
2015-01-223761-602-08446.50 ppb
2015-01-223761-603-08534.90 ppb
2015-01-223761-604-08282.10 ppb
2015-01-223761-605-09244.10 ppb
2015-01-223761-606-10174.90 ppb
2015-01-223761-607-10397.40 ppb
2015-01-223761-608-09088.50 ppb
2015-02-033761-002-10005.80 ppb
2015-03-173761-002-09305.30 ppb
2015-03-243761-036-0745ND
2015-04-073761-002-12305.30 ppb
2015-04-163761-601-11007.40 ppb
2015-04-163761-602-10153.20 ppb
2015-04-163761-603-10271.70 ppb
2015-04-163761-604-0950ND
2015-04-163761-605-1041ND
2015-04-163761-606-11124.30 ppb
2015-04-163761-607-11267.80 ppb
2015-04-163761-608-10525.80 ppb
2015-05-053761-002-093025.4 ppb
2015-06-023761-002-093519.0 ppb
2015-07-023761-601-080413.4 ppb
2015-07-023761-602-074410.2 ppb
2015-07-023761-603-082210.1 ppb
2015-07-023761-604-07332.60 ppb
2015-07-023761-605-081410.4 ppb
2015-07-023761-606-101010.7 ppb
2015-07-023761-607-084015.6 ppb
2015-07-023761-608-075514.1 ppb
2015-07-213761-002-103510.2 ppb
2015-08-043761-002-093513.3 ppb
2015-09-013761-002-093516.0 ppb
2015-10-063761-002-101013.9 ppb
2015-11-103761-002-100513.3 ppb
2015-12-103761-601-081724.7 ppb
2015-12-103761-602-07491.40 ppb
2015-12-103761-603-0803ND
2015-12-103761-604-07325.40 ppb
2015-12-103761-605-082921.9 ppb
2015-12-103761-606-111515.9 ppb
2015-12-103761-607-085923.6 ppb
2015-12-103761-608-084122.3 ppb
2015-12-153761-002-081512.1 ppb
2016-01-053761-036-1003ND
2016-01-213761-002-10456.00 ppb
2016-01-213761-601-101513.9 ppb
2016-01-213761-602-09034.20 ppb
2016-01-213761-603-09534.70 ppb
2016-01-213761-604-08451.60 ppb
2016-01-213761-605-10036.00 ppb
2016-01-213761-606-10565.90 ppb
2016-01-213761-607-112012.2 ppb
2016-01-213761-608-102312.7 ppb
2016-02-163761-002-08454.40 ppb
2016-03-013761-015-0744ND
2016-03-013761-016-0829ND
2016-03-013761-017-1000ND
2016-03-013761-020-0924ND
2016-03-013761-021-0915ND
2016-03-013761-024-0855ND
2016-03-013761-031-0841ND
2016-03-013761-032-0806ND
2016-03-013761-033-0753ND
2016-03-013761-053-0820ND
2016-03-023761-039-0821ND
2016-03-023761-042-0747ND
2016-03-023761-046-0811ND
2016-03-023761-055-0913ND
2016-03-033761-019-0823ND
2016-03-033761-023-0900ND
2016-03-033761-047-0505ND
2016-03-093761-002-11305.20 ppb
2016-04-123761-002-09076.20 ppb
2016-04-143761-601-094811.9 ppb
2016-04-143761-602-085612.0 ppb
2016-04-143761-603-090510.1 ppb
2016-04-143761-604-08459.30 ppb
2016-04-143761-605-091611.0 ppb
2016-04-143761-606-100011.8 ppb
2016-04-143761-607-111112.8 ppb
2016-04-143761-608-092710.8 ppb
2016-05-103761-002-094525.1 ppb
2016-06-143761-002-102524.7 ppb
2016-07-123761-002-085012.1 ppb
2016-07-213761-601-095542.5 ppb
2016-07-213761-602-091011.1 ppb
2016-07-213761-603-092037.5 ppb
2016-07-213761-604-09001.20 ppb
2016-07-213761-605-093534.9 ppb
2016-07-213761-606-10101.70 ppb
2016-07-213761-607-102023.8 ppb
2016-07-213761-608-094538.6 ppb
2016-08-093761-002-091026.5 ppb
2016-09-133761-002-110012.0 ppb
2016-10-113761-002-111513.1 ppb
2016-11-083761-002-09309.20 ppb
2016-11-173761-601-090612.0 ppb
2016-11-173761-602-08283.80 ppb
2016-11-173761-603-10009.90 ppb
2016-11-173761-604-08133.30 ppb
2016-11-173761-605-09469.90 ppb
2016-11-173761-606-09189.10 ppb
2016-11-173761-607-102521.2 ppb
2016-11-173761-608-085612.9 ppb
2016-12-133761-002-101513.6 ppb
2017-01-053761-036-0820ND
2017-01-103761-002-093013.5 ppb
2017-02-073761-002-09104.60 ppb
2017-02-243761-601-094010.3 ppb
2017-02-243761-602-09004.10 ppb
2017-02-243761-603-09157.00 ppb
2017-02-243761-604-08453.80 ppb
2017-02-243761-605-092511.8 ppb
2017-02-243761-606-10206.90 ppb
2017-02-243761-607-100516.0 ppb
2017-02-243761-608-09509.90 ppb
2017-03-143761-002-10255.10 ppb
2017-04-113761-002-09354.60 ppb
2017-05-093761-002-09204.70 ppb
2017-05-123761-601-11431.50 ppb
2017-05-123761-602-1023ND
2017-05-123761-603-1057ND
2017-05-123761-604-10131.60 ppb
2017-05-123761-605-11111.10 ppb
2017-05-123761-606-12221.40 ppb
2017-05-123761-607-12431.50 ppb
2017-05-123761-608-11271.50 ppb
2017-07-113761-002-10105.40 ppb
2017-08-093761-002-09405.50 ppb
2017-08-243761-601-08484.00 ppb
2017-08-243761-602-08281.000 ppb
2017-08-243761-603-08384.30 ppb
2017-08-243761-604-08172.20 ppb
2017-08-243761-605-09083.50 ppb
2017-08-243761-606-09204.00 ppb
2017-08-243761-607-09317.50 ppb
2017-08-243761-608-08586.90 ppb
2017-09-123761-002-09454.20 ppb
2017-10-173761-002-09052.80 ppb
2017-10-193761-601-08453.20 ppb
2017-10-193761-602-08153.10 ppb
2017-10-193761-603-08253.20 ppb
2017-10-193761-604-08002.70 ppb
2017-10-193761-605-08353.10 ppb
2017-10-193761-606-09153.10 ppb
2017-10-193761-607-09307.50 ppb
2017-10-193761-608-09002.90 ppb
2017-11-073761-601-10434.40 ppb
2017-11-073761-602-10533.20 ppb
2017-11-073761-603-10132.90 ppb
2017-11-073761-604-11036.20 ppb
2017-11-073761-605-10236.90 ppb
2017-11-073761-606-09203.50 ppb
2017-11-073761-607-08501.60 ppb
2017-11-073761-608-10335.30 ppb
2017-11-143761-002-09252.40 ppb
2017-12-053761-028-0850ND
2017-12-123761-002-08407.00 ppb
2017-12-203761-601-094211.2 ppb
2017-12-203761-602-09125.40 ppb
2017-12-203761-603-09194.60 ppb
2017-12-203761-604-09161.50 ppb
2017-12-203761-605-092711.3 ppb
2017-12-203761-606-09555.30 ppb
2017-12-203761-607-101514.0 ppb
2017-12-203761-608-093513.6 ppb
2018-01-053761-036-0752ND
2018-01-093761-002-07174.50 ppb
2018-01-113761-601-09382.70 ppb
2018-01-113761-602-0845ND
2018-01-113761-603-0855ND
2018-01-113761-604-08333.20 ppb
2018-01-113761-605-09104.50 ppb
2018-01-113761-606-09541.10 ppb
2018-01-113761-607-10167.00 ppb
2018-01-113761-608-09229.50 ppb
2018-02-133761-002-091510.9 ppb
2018-02-203761-601-09509.00 ppb
2018-02-203761-602-102021.0 ppb
2018-02-203761-603-101017.9 ppb
2018-02-203761-604-10502.80 ppb
2018-02-203761-605-092013.4 ppb
2018-02-203761-606-085517.7 ppb
2018-02-203761-607-090515.7 ppb
2018-02-203761-608-100011.1 ppb
2018-03-143761-002-094516.7 ppb
2018-04-103761-002-09104.20 ppb
2018-04-303761-601-09452.00 ppb
2018-04-303761-602-0805ND
2018-04-303761-603-112532.1 ppb
2018-04-303761-604-07452.40 ppb
2018-04-303761-605-110534.5 ppb
2018-04-303761-606-09257.50 ppb
2018-04-303761-607-090011.6 ppb
2018-04-303761-608-101028.8 ppb
2018-05-153761-002-07454.80 ppb
2018-05-303761-601-100814.1 ppb
2018-05-303761-602-1101ND
2018-05-303761-603-093713.9 ppb
2018-05-303761-604-07412.10 ppb
2018-05-303761-605-094716.1 ppb
2018-05-303761-606-09153.90 ppb
2018-05-303761-607-084115.2 ppb
2018-05-303761-608-095712.5 ppb
2018-06-123761-002-09154.30 ppb
2018-07-103761-002-09303.40 ppb
2018-08-093761-601-114212.5 ppb
2018-08-093761-602-1101ND
2018-08-093761-603-11119.20 ppb
2018-08-093761-604-10502.30 ppb
2018-08-093761-605-112223.3 ppb
2018-08-093761-606-11523.10 ppb
2018-08-093761-607-120526.5 ppb
2018-08-093761-608-113221.0 ppb
2018-08-143761-002-112323.6 ppb
2018-09-063761-601-0740ND
2018-09-063761-602-08051.30 ppb
2018-09-063761-603-08551.10 ppb
2018-09-063761-604-0815ND
2018-09-063761-605-08452.00 ppb
2018-09-063761-606-082519.1 ppb
2018-09-063761-607-083515.7 ppb
2018-09-063761-608-075025.1 ppb
2018-09-113761-002-094015.6 ppb
2018-10-093761-002-102011.7 ppb
2018-10-113761-601-100516.1 ppb
2018-10-113761-602-09245.80 ppb
2018-10-113761-603-093415.0 ppb
2018-10-113761-604-08551.70 ppb
2018-10-113761-605-09469.80 ppb
2018-10-113761-606-10155.90 ppb
2018-10-113761-607-103319.4 ppb
2018-10-113761-608-095615.6 ppb
2018-11-133761-002-09253.80 ppb
2018-11-283761-601-094611.0 ppb
2018-11-283761-602-10274.70 ppb
2018-11-283761-603-093611.3 ppb
2018-11-283761-604-08042.00 ppb
2018-11-283761-605-092010.2 ppb
2018-11-283761-606-08552.80 ppb
2018-11-283761-607-084012.3 ppb
2018-11-283761-608-091012.8 ppb
2018-12-113761-002-11153.20 ppb
2019-01-033761-036-0830ND
2019-01-163761-002-08452.30 ppb
2019-01-233761-601-093514.2 ppb
2019-01-233761-602-081521.7 ppb
2019-01-233761-603-083513.3 ppb
2019-01-233761-604-10207.20 ppb
2019-01-233761-605-095013.0 ppb
2019-01-233761-606-084512.5 ppb
2019-01-233761-607-090020.1 ppb
2019-01-233761-608-094015.8 ppb
2019-02-073761-601-09251.40 ppb
2019-02-073761-602-1005ND
2019-02-073761-603-0945ND
2019-02-073761-604-07452.30 ppb
2019-02-073761-605-094020.7 ppb
2019-02-073761-606-091021.0 ppb
2019-02-073761-607-083516.6 ppb
2019-02-073761-608-093010.5 ppb
2019-02-123761-002-08553.30 ppb
2019-03-053761-017-0807ND
2019-03-053761-020-0818ND
2019-03-053761-032-0750ND
2019-03-053761-033-0735ND
2019-03-123761-021-0808ND
2019-03-123761-023-0754ND
2019-03-123761-024-0820ND
2019-03-123761-042-0729ND
2019-03-123761-047-0753ND
2019-03-193761-015-0734ND
2019-03-193761-019-0825ND
2019-03-193761-031-0759ND
2019-03-193761-053-0751ND
2019-03-263761-039-0955ND
2019-03-263761-055-1014ND
2019-04-163761-002-091617.2 ppb
2019-05-073761-601-09359.10 ppb
2019-05-073761-602-1019ND
2019-05-073761-603-10081.20 ppb
2019-05-073761-604-10291.40 ppb
2019-05-073761-605-095516.5 ppb
2019-05-073761-606-09228.40 ppb
2019-05-073761-607-090526.6 ppb
2019-05-073761-608-094513.4 ppb
2019-05-143761-002-104722.0 ppb
2019-06-113761-002-072422.2 ppb
2019-06-213761-046-0810ND
2019-07-033761-002-103516.9 ppb
2019-08-063761-002-091617.0 ppb
2019-08-083761-601-093119.4 ppb
2019-08-083761-602-102018.8 ppb
2019-08-083761-603-095318.4 ppb
2019-08-083761-604-10091.90 ppb
2019-08-083761-605-094420.7 ppb
2019-08-083761-606-104217.7 ppb
2019-08-083761-607-090522.7 ppb
2019-08-083761-608-092122.2 ppb
2019-09-103761-002-093417.8 ppb
2019-10-083761-002-094513.5 ppb
2019-11-053761-002-09379.20 ppb
2019-11-083761-601-101927.7 ppb
2019-11-083761-602-09599.80 ppb
2019-11-083761-603-104714.3 ppb
2019-11-083761-604-09411.80 ppb
2019-11-083761-605-103416.3 ppb
2019-11-083761-606-110712.7 ppb
2019-11-083761-607-091522.6 ppb
2019-11-083761-608-101011.6 ppb
2019-11-123761-002-090012.8 ppb
2019-12-173761-002-102914.1 ppb