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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

California Water Service - South San Francisco

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

49

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.37 ppb3224ND - 2.90 ppb
20150.766 ppb3214ND - 2.80 ppb
20160.575 ppb328ND - 3.40 ppb
20170.0750 ppb322ND - 1.40 ppb
20180.0344 ppb321ND - 1.10 ppb
2019ND320ND

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
2014-03-105810-010-10501.40 ppb
2014-03-105810-900-08051.70 ppb
2014-03-105810-901-08451.80 ppb
2014-03-105810-902-10352.20 ppb
2014-03-105810-903-08252.20 ppb
2014-03-105810-904-09052.90 ppb
2014-03-105810-906-1015ND
2014-03-105810-907-1005ND
2014-06-095810-010-13401.50 ppb
2014-06-095810-900-08151.30 ppb
2014-06-095810-901-11002.30 ppb
2014-06-095810-902-10501.60 ppb
2014-06-095810-903-11152.80 ppb
2014-06-095810-904-11452.70 ppb
2014-06-095810-906-14151.30 ppb
2014-06-095810-907-1100ND
2014-09-115810-010-0858ND
2014-09-115810-900-1108ND
2014-09-115810-901-10521.50 ppb
2014-09-115810-902-11231.80 ppb
2014-09-115810-903-09091.80 ppb
2014-09-115810-904-09441.70 ppb
2014-09-115810-906-10371.10 ppb
2014-09-115810-907-0923ND
2014-12-085810-010-09301.50 ppb
2014-12-085810-900-08151.90 ppb
2014-12-085810-901-10251.10 ppb
2014-12-085810-902-10101.60 ppb
2014-12-085810-903-08551.60 ppb
2014-12-085810-904-10452.60 ppb
2014-12-085810-906-1105ND
2014-12-085810-907-0840ND
2015-03-105810-010-11051.30 ppb
2015-03-105810-900-09551.70 ppb
2015-03-105810-901-12502.30 ppb
2015-03-105810-902-13551.90 ppb
2015-03-105810-903-12402.20 ppb
2015-03-105810-904-10352.80 ppb
2015-03-105810-906-1155ND
2015-03-105810-907-1020ND
2015-06-155810-010-0912ND
2015-06-155810-900-1135ND
2015-06-155810-901-11071.30 ppb
2015-06-155810-902-10281.40 ppb
2015-06-155810-903-11212.20 ppb
2015-06-155810-904-10391.90 ppb
2015-06-155810-906-0924ND
2015-06-165810-907-1002ND
2015-09-165810-010-0935ND
2015-09-165810-900-10271.20 ppb
2015-09-165810-901-0945ND
2015-09-165810-902-1102ND
2015-09-165810-903-09561.10 ppb
2015-09-165810-904-10501.80 ppb
2015-09-165810-906-1114ND
2015-09-165810-907-1011ND
2015-12-155810-900-1432ND
2015-12-155810-901-1415ND
2015-12-155810-902-1342ND
2015-12-155810-906-1402ND
2015-12-165810-010-1259ND
2015-12-165810-903-1032ND
2015-12-165810-904-11461.40 ppb
2015-12-165810-907-1103ND
2016-03-155810-010-09122.10 ppb
2016-03-155810-900-09552.30 ppb
2016-03-155810-901-09222.20 ppb
2016-03-155810-902-11163.40 ppb
2016-03-155810-903-10523.10 ppb
2016-03-155810-904-11032.90 ppb
2016-03-155810-906-1033ND
2016-03-155810-907-0939ND
2016-06-135810-010-1025ND
2016-06-135810-900-0820ND
2016-06-135810-901-0840ND
2016-06-135810-902-0915ND
2016-06-135810-903-1000ND
2016-06-135810-904-1050ND
2016-06-135810-906-0940ND
2016-06-135810-907-1115ND
2016-09-145810-010-0950ND
2016-09-145810-900-0820ND
2016-09-145810-901-1035ND
2016-09-145810-902-1010ND
2016-09-145810-903-0910ND
2016-09-145810-904-1100ND
2016-09-145810-906-11301.000 ppb
2016-09-145810-907-0845ND
2016-12-125810-010-1448ND
2016-12-125810-900-1403ND
2016-12-125810-901-1312ND
2016-12-125810-902-1346ND
2016-12-125810-903-1425ND
2016-12-125810-904-1437ND
2016-12-125810-906-13311.40 ppb
2016-12-125810-907-1416ND
2017-03-155810-900-1032ND
2017-03-155810-901-1020ND
2017-03-155810-902-1046ND
2017-03-155810-906-1059ND
2017-03-165810-903-0948ND
2017-03-165810-904-1029ND
2017-03-165810-907-1008ND
2017-03-275810-010-0940ND
2017-06-125810-010-1055ND
2017-06-125810-900-0910ND
2017-06-125810-901-1110ND
2017-06-125810-902-1030ND
2017-06-125810-903-1005ND
2017-06-125810-904-1125ND
2017-06-125810-906-11501.000 ppb
2017-06-125810-907-0945ND
2017-09-125810-010-0810ND
2017-09-125810-900-0910ND
2017-09-125810-901-0940ND
2017-09-125810-902-0820ND
2017-09-125810-903-0930ND
2017-09-125810-904-0950ND
2017-09-125810-906-1005ND
2017-09-125810-907-0840ND
2017-12-145810-010-1040ND
2017-12-145810-900-1030ND
2017-12-145810-901-1050ND
2017-12-145810-902-1200ND
2017-12-145810-903-1123ND
2017-12-145810-904-1111ND
2017-12-145810-906-11351.40 ppb
2017-12-145810-907-1145ND
2018-03-145810-010-1115ND
2018-03-145810-900-0920ND
2018-03-145810-901-0950ND
2018-03-145810-902-1055ND
2018-03-145810-903-1025ND
2018-03-145810-904-1130ND
2018-03-145810-906-1040ND
2018-03-145810-907-1010ND
2018-06-115810-010-0950ND
2018-06-115810-900-0815ND
2018-06-115810-901-0905ND
2018-06-115810-902-0925ND
2018-06-115810-903-0850ND
2018-06-115810-904-1010ND
2018-06-115810-906-10301.10 ppb
2018-06-115810-907-0830ND
2018-09-115810-010-1115ND
2018-09-115810-900-0945ND
2018-09-115810-901-1030ND
2018-09-115810-902-0930ND
2018-09-115810-903-1015ND
2018-09-115810-904-1100ND
2018-09-115810-906-1130ND
2018-09-115810-907-1000ND
2018-12-125810-010-1003ND
2018-12-125810-900-1101ND
2018-12-125810-901-1015ND
2018-12-125810-902-0954ND
2018-12-125810-903-1036ND
2018-12-125810-904-1025ND
2018-12-125810-906-1126ND
2018-12-125810-907-1047ND
2019-03-125810-010-0900ND
2019-03-125810-900-0800ND
2019-03-125810-901-0850ND
2019-03-125810-902-0905ND
2019-03-125810-903-0830ND
2019-03-125810-904-0920ND
2019-03-125810-906-1000ND
2019-03-125810-907-0820ND
2019-06-125810-010-0755ND
2019-06-125810-900-0840ND
2019-06-125810-901-0805ND
2019-06-125810-902-0740ND
2019-06-125810-903-0820ND
2019-06-125810-904-0910ND
2019-06-125810-906-0930ND
2019-06-125810-907-0900ND
2019-09-105810-010-0910ND
2019-09-105810-900-0800ND
2019-09-105810-901-0840ND
2019-09-105810-902-0920ND
2019-09-105810-903-0830ND
2019-09-105810-904-0850ND
2019-09-105810-906-1040ND
2019-09-105810-907-0815ND
2019-12-125810-010-0906ND
2019-12-125810-900-0730ND
2019-12-125810-901-0835ND
2019-12-125810-902-0853ND
2019-12-125810-903-0824ND
2019-12-125810-904-0812ND
2019-12-125810-906-0931ND
2019-12-125810-907-0757ND