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EWG's Tap Water Database — 2021 UPDATE

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Bromochloroacetic acid

San Diego County Water Authority

Bromochloroacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Bromochloroacetic acid and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

MORE ABOUT THIS CONTAMINANT

 

124

Samples

0

Samples exceeding legal limit (MCL)

108

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.38 ppb2219ND - 2.70 ppb
20150.958 ppb2415ND - 2.10 ppb
20161.42 ppb1815ND - 2.60 ppb
20172.58 ppb20201.10 ppb - 3.60 ppb
20181.80 ppb2221ND - 3.30 ppb
20193.36 ppb18181.70 ppb - 7.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for bromochloroacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-049590-003-1020ND
2014-01-069590-003-10221.20 ppb
2014-02-059590-003-10301.40 ppb
2014-03-039590-003-12231.20 ppb
2014-04-059590-003-1340ND
2014-04-079590-003-13421.20 ppb
2014-05-039590-003-10271.20 ppb
2014-05-059590-003-12501.50 ppb
2014-06-019590-003-0734ND
2014-06-039590-003-07392.00 ppb
2014-07-059590-003-11502.20 ppb
2014-07-079590-003-12302.70 ppb
2014-08-029590-003-11391.40 ppb
2014-08-049590-003-14012.50 ppb
2014-09-069590-003-10121.20 ppb
2014-09-089590-003-10301.60 ppb
2014-10-049590-003-11451.30 ppb
2014-10-069590-003-12041.80 ppb
2014-11-039590-003-13191.10 ppb
2014-11-059590-003-13201.60 ppb
2014-12-069590-003-12201.40 ppb
2014-12-089590-003-12281.90 ppb
2015-01-039590-003-1200ND
2015-01-059590-003-12051.30 ppb
2015-02-019590-003-08181.30 ppb
2015-02-039590-003-09001.50 ppb
2015-03-159590-003-1000ND
2015-03-179590-003-1356ND
2015-04-049590-003-0805ND
2015-04-069590-003-11201.20 ppb
2015-05-059590-003-1045ND
2015-05-079590-003-10511.50 ppb
2015-06-019590-003-12051.20 ppb
2015-06-039590-003-12071.70 ppb
2015-07-099590-003-10501.80 ppb
2015-07-099590-003-11082.10 ppb
2015-08-039590-003-1020ND
2015-08-059590-003-10231.70 ppb
2015-09-019590-003-11291.10 ppb
2015-09-039590-003-13001.70 ppb
2015-10-039590-003-0731ND
2015-10-059590-003-07251.40 ppb
2015-11-019590-003-09501.50 ppb
2015-11-039590-003-09552.00 ppb
2015-12-089590-003-0707ND
2015-12-109590-003-0731ND
2016-01-149590-003-21291.70 ppb
2016-01-169590-003-21401.90 ppb
2016-02-099590-003-14051.50 ppb
2016-02-119590-003-14062.20 ppb
2016-03-199590-003-0818ND
2016-03-219590-003-08231.10 ppb
2016-04-059590-003-10592.00 ppb
2016-04-079590-003-11171.50 ppb
2016-05-019590-003-1203ND
2016-05-039590-003-1230ND
2016-07-059590-003-12001.000 ppb
2016-07-079590-003-12252.30 ppb
2016-08-019590-003-11002.00 ppb
2016-08-039590-003-11032.60 ppb
2016-10-019590-003-07211.000 ppb
2016-10-039590-003-07231.60 ppb
2016-11-019590-003-10001.70 ppb
2016-11-039590-003-10171.40 ppb
2017-01-249590-003-13451.10 ppb
2017-01-269590-003-13471.20 ppb
2017-03-259590-003-10283.10 ppb
2017-03-279590-003-10303.40 ppb
2017-04-019590-003-10133.40 ppb
2017-04-039590-003-10153.60 ppb
2017-05-019590-003-10003.00 ppb
2017-05-039590-003-10593.20 ppb
2017-07-049590-003-10002.20 ppb
2017-07-069590-003-11423.00 ppb
2017-08-019590-003-08302.10 ppb
2017-08-039590-003-08333.00 ppb
2017-09-059590-003-07302.20 ppb
2017-09-079590-003-08383.10 ppb
2017-10-019590-003-11331.80 ppb
2017-10-039590-003-11352.60 ppb
2017-11-269590-003-11002.20 ppb
2017-11-289590-003-11032.00 ppb
2017-12-059590-003-08452.10 ppb
2017-12-079590-003-08593.30 ppb
2018-01-019590-003-09002.10 ppb
2018-01-039590-003-09023.30 ppb
2018-02-039590-003-05512.20 ppb
2018-02-059590-003-05553.00 ppb
2018-03-199590-003-09002.10 ppb
2018-03-219590-003-09003.00 ppb
2018-04-019590-003-09001.10 ppb
2018-04-039590-003-09032.40 ppb
2018-05-069590-003-09001.20 ppb
2018-05-089590-003-09031.30 ppb
2018-06-269590-003-1300ND
2018-06-289590-003-13031.30 ppb
2018-07-159590-003-07551.20 ppb
2018-07-179590-003-07591.80 ppb
2018-08-049590-003-11151.40 ppb
2018-08-069590-003-11162.20 ppb
2018-09-029590-003-09301.60 ppb
2018-09-049590-003-09332.00 ppb
2018-10-019590-003-10001.10 ppb
2018-10-039590-003-10032.50 ppb
2018-11-019590-003-10521.20 ppb
2018-11-039590-003-11001.60 ppb
2019-04-219590-003-08086.70 ppb
2019-04-239590-003-08117.20 ppb
2019-05-159590-003-08004.00 ppb
2019-05-179590-003-10294.40 ppb
2019-06-179590-003-06363.30 ppb
2019-06-199590-003-08523.70 ppb
2019-07-019590-003-07352.80 ppb
2019-07-039590-003-08003.50 ppb
2019-08-089590-003-08552.90 ppb
2019-08-089590-003-10502.20 ppb
2019-09-039590-003-07341.90 ppb
2019-09-049590-003-07123.60 ppb
2019-10-019590-003-07202.30 ppb
2019-10-039590-003-04183.00 ppb
2019-11-049590-003-07081.70 ppb
2019-11-069590-003-06212.10 ppb
2019-12-119590-003-06152.40 ppb
2019-12-139590-003-06102.80 ppb