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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

San Lorenzo Valley Water District

Dibromoacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids 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

 

121

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
20150.175 ppb203ND - 1.20 ppb
20160.130 ppb202ND - 1.60 ppb
2017ND200ND
20180.114 ppb212ND - 1.40 ppb
20190.1000 ppb202ND - 1.000 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.04 ppb

The EWG Health Guideline of 0.04 ppb for dibromoacetic 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
2014-01-175810-805-0830ND
2014-02-129590-801-0900ND
2014-02-129590-802-0915ND
2014-02-129590-803-1445ND
2014-02-129590-804-0945ND
2014-04-305810-805-1238ND
2014-05-209590-801-0950ND
2014-05-209590-802-1015ND
2014-05-209590-803-1110ND
2014-05-209590-804-1035ND
2014-07-305810-805-1012ND
2014-08-139590-801-1000ND
2014-08-139590-802-1020ND
2014-08-139590-803-1400ND
2014-08-139590-804-0900ND
2014-10-295810-805-1049ND
2014-11-129590-801-1200ND
2014-11-129590-802-1230ND
2014-11-129590-803-1430ND
2014-11-129590-804-1245ND
2015-01-275810-805-1145ND
2015-02-119590-801-1520ND
2015-02-119590-802-1455ND
2015-02-119590-803-1430ND
2015-02-119590-804-1420ND
2015-04-275810-805-07501.20 ppb
2015-05-209590-801-1550ND
2015-05-209590-802-1530ND
2015-05-209590-803-1450ND
2015-05-209590-804-1500ND
2015-07-075810-805-1213ND
2015-08-129590-801-1345ND
2015-08-129590-802-1315ND
2015-08-129590-803-1100ND
2015-08-129590-804-1200ND
2015-10-145810-805-1115ND
2015-11-179590-801-1100ND
2015-11-179590-802-11301.10 ppb
2015-11-179590-803-1430ND
2015-11-179590-804-12001.20 ppb
2016-01-145810-805-1023ND
2016-02-109590-801-1500ND
2016-02-109590-802-1440ND
2016-02-109590-803-1400ND
2016-02-109590-804-1530ND
2016-04-215810-805-09391.60 ppb
2016-05-119590-801-1300ND
2016-05-119590-802-1230ND
2016-05-119590-803-11301.000 ppb
2016-05-119590-804-1200ND
2016-08-119590-801-1050ND
2016-08-119590-802-1030ND
2016-08-119590-803-1150ND
2016-08-119590-804-1125ND
2016-08-259590-805-1220ND
2016-11-039590-805-1150ND
2016-11-059590-801-1130ND
2016-11-059590-802-1100ND
2016-11-059590-803-1245ND
2016-11-059590-804-1130ND
2017-02-159590-801-0945ND
2017-02-159590-802-1100ND
2017-02-159590-803-1050ND
2017-02-159590-804-1140ND
2017-03-089590-805-1220ND
2017-05-119590-801-1315ND
2017-05-119590-802-1245ND
2017-05-119590-804-1230ND
2017-05-119590-805-1130ND
2017-05-319590-803-1030ND
2017-08-179590-801-0945ND
2017-08-179590-802-1045ND
2017-08-179590-803-1130ND
2017-08-179590-804-1015ND
2017-08-179590-805-1010ND
2017-11-079590-801-1200ND
2017-11-079590-802-1130ND
2017-11-079590-803-1040ND
2017-11-079590-804-1110ND
2017-11-079590-805-0945ND
2018-02-159590-801-0930ND
2018-02-159590-802-1030ND
2018-02-159590-803-1230ND
2018-02-159590-804-1000ND
2018-02-159590-805-0920ND
2018-05-179590-801-1030ND
2018-05-179590-802-1000ND
2018-05-179590-803-0900ND
2018-05-179590-804-0930ND
2018-05-179590-805-1030ND
2018-08-159590-801-09151.000 ppb
2018-08-159590-802-0900ND
2018-08-159590-802-1115ND
2018-08-159590-803-1030ND
2018-08-159590-804-09451.40 ppb
2018-08-159590-805-1045ND
2018-11-159590-801-1030ND
2018-11-159590-802-1100ND
2018-11-159590-803-1230ND
2018-11-159590-804-1000ND
2018-11-159590-805-1300ND
2019-02-219590-801-0940ND
2019-02-219590-802-0905ND
2019-02-219590-803-0940ND
2019-02-219590-804-0830ND
2019-02-219590-805-0900ND
2019-05-159590-801-1045ND
2019-05-159590-802-1105ND
2019-05-159590-803-1335ND
2019-05-159590-804-1215ND
2019-05-159590-805-13101.000 ppb
2019-08-149590-801-12001.000 ppb
2019-08-149590-802-1130ND
2019-08-149590-803-1445ND
2019-08-149590-804-1100ND
2019-08-149590-805-1400ND
2019-11-199590-801-1040ND
2019-11-199590-802-1015ND
2019-11-199590-803-0830ND
2019-11-199590-804-0945ND
2019-11-199590-805-0910ND