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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

North Marin 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

 

233

Samples

0

Samples exceeding legal limit (MCL)

113

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.21 ppb3821ND - 3.70 ppb
20151.34 ppb4025ND - 3.20 ppb
20160.372 ppb397ND - 2.60 ppb
20170.618 ppb3912ND - 2.60 ppb
20181.94 ppb3832ND - 3.10 ppb
20190.792 ppb3916ND - 2.50 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
2014-02-051610-001-14092.00 ppb
2014-02-051610-005-12131.60 ppb
2014-02-051610-006-1142ND
2014-02-051610-007-1315ND
2014-02-051610-008-12231.60 ppb
2014-02-051610-009-11351.70 ppb
2014-02-051610-014-11562.00 ppb
2014-02-051610-015-13362.00 ppb
2014-02-051610-017-1349ND
2014-05-071610-001-13431.50 ppb
2014-05-071610-004-1454ND
2014-05-071610-005-1507ND
2014-05-071610-006-13231.10 ppb
2014-05-071610-007-1156ND
2014-05-071610-008-1517ND
2014-05-071610-009-13161.30 ppb
2014-05-071610-014-13321.10 ppb
2014-05-071610-015-1248ND
2014-05-071610-017-13001.40 ppb
2014-08-061610-001-14121.60 ppb
2014-08-061610-004-1246ND
2014-08-061610-005-1426ND
2014-08-061610-006-1157ND
2014-08-061610-007-1342ND
2014-08-061610-008-1301ND
2014-08-061610-009-11481.60 ppb
2014-08-061610-014-12071.40 ppb
2014-08-061610-015-1325ND
2014-08-061610-017-1312ND
2014-11-051610-001-13453.50 ppb
2014-11-051610-005-1205ND
2014-11-051610-006-11423.30 ppb
2014-11-051610-007-1317ND
2014-11-051610-008-12403.50 ppb
2014-11-051610-009-11353.70 ppb
2014-11-051610-014-11523.40 ppb
2014-11-051610-015-13013.60 ppb
2014-11-051610-017-12523.20 ppb
2015-02-121610-001-13222.30 ppb
2015-02-121610-006-11342.00 ppb
2015-02-121610-007-1207ND
2015-02-121610-008-12552.20 ppb
2015-02-121610-009-11272.30 ppb
2015-02-121610-014-13111.90 ppb
2015-02-121610-015-12272.20 ppb
2015-02-121610-017-1240ND
2015-02-131610-004-1148ND
2015-02-131610-005-1200ND
2015-05-061610-001-14131.80 ppb
2015-05-061610-004-1354ND
2015-05-061610-005-1146ND
2015-05-061610-006-1217ND
2015-05-061610-007-1251ND
2015-05-061610-008-13381.20 ppb
2015-05-061610-009-12241.70 ppb
2015-05-061610-014-1207ND
2015-05-061610-015-13091.80 ppb
2015-05-061610-017-1321ND
2015-08-051610-001-13432.40 ppb
2015-08-051610-004-1139ND
2015-08-051610-005-13301.30 ppb
2015-08-051610-006-11062.30 ppb
2015-08-051610-007-12582.80 ppb
2015-08-051610-008-12141.50 ppb
2015-08-051610-009-10493.20 ppb
2015-08-051610-014-11182.70 ppb
2015-08-051610-015-12402.40 ppb
2015-08-051610-017-12272.70 ppb
2015-11-181610-001-14111.70 ppb
2015-11-181610-004-11342.00 ppb
2015-11-181610-005-13551.40 ppb
2015-11-181610-006-13182.00 ppb
2015-11-181610-007-1256ND
2015-11-181610-008-1159ND
2015-11-181610-009-13242.60 ppb
2015-11-181610-014-1334ND
2015-11-181610-015-12403.00 ppb
2015-11-181610-017-1212ND
2016-02-101610-001-13162.50 ppb
2016-02-101610-005-1154ND
2016-02-101610-006-1254ND
2016-02-101610-007-1109ND
2016-02-101610-008-1229ND
2016-02-101610-009-1247ND
2016-02-101610-014-1305ND
2016-02-101610-015-1128ND
2016-02-101610-017-1139ND
2016-05-111610-001-1418ND
2016-05-111610-004-1504ND
2016-05-111610-005-15162.00 ppb
2016-05-111610-006-1353ND
2016-05-111610-007-1333ND
2016-05-111610-008-12481.90 ppb
2016-05-111610-009-1400ND
2016-05-111610-014-1407ND
2016-05-111610-015-1312ND
2016-05-111610-017-1301ND
2016-08-101610-001-1401ND
2016-08-101610-004-1301ND
2016-08-101610-005-1315ND
2016-08-101610-006-1116ND
2016-08-101610-007-1136ND
2016-08-101610-008-1232ND
2016-08-101610-009-1111ND
2016-08-101610-014-1352ND
2016-08-101610-015-1158ND
2016-08-101610-017-1213ND
2016-11-091610-001-1154ND
2016-11-091610-004-12121.60 ppb
2016-11-091610-005-12302.00 ppb
2016-11-091610-006-1132ND
2016-11-091610-007-1335ND
2016-11-091610-008-12401.90 ppb
2016-11-091610-009-11152.60 ppb
2016-11-091610-014-1143ND
2016-11-091610-015-1252ND
2016-11-091610-017-1359ND
2017-02-081610-001-1444ND
2017-02-081610-005-1219ND
2017-02-081610-006-1139ND
2017-02-081610-007-1403ND
2017-02-081610-008-1227ND
2017-02-081610-009-1132ND
2017-02-081610-014-1152ND
2017-02-081610-015-1347ND
2017-02-081610-017-1246ND
2017-05-101610-001-12562.20 ppb
2017-05-101610-004-1041ND
2017-05-101610-005-13111.20 ppb
2017-05-101610-006-0940ND
2017-05-101610-007-1148ND
2017-05-101610-008-1107ND
2017-05-101610-009-0930ND
2017-05-101610-014-0950ND
2017-05-101610-015-1134ND
2017-05-101610-017-1122ND
2017-08-091610-001-1628ND
2017-08-091610-004-1701ND
2017-08-091610-005-17181.50 ppb
2017-08-091610-006-1603ND
2017-08-091610-007-1425ND
2017-08-091610-008-15241.50 ppb
2017-08-091610-009-15512.30 ppb
2017-08-091610-014-1616ND
2017-08-091610-015-1445ND
2017-08-091610-017-1459ND
2017-11-081610-001-10282.00 ppb
2017-11-081610-004-1046ND
2017-11-081610-005-1059ND
2017-11-081610-006-10092.20 ppb
2017-11-081610-007-11572.60 ppb
2017-11-081610-008-1108ND
2017-11-081610-009-10012.40 ppb
2017-11-081610-014-10192.20 ppb
2017-11-081610-015-11351.80 ppb
2017-11-081610-017-11212.20 ppb
2018-02-141610-001-13432.40 ppb
2018-02-141610-005-1159ND
2018-02-141610-006-11222.60 ppb
2018-02-141610-007-12412.00 ppb
2018-02-141610-008-11462.40 ppb
2018-02-141610-009-11152.50 ppb
2018-02-141610-014-11332.70 ppb
2018-02-141610-015-12272.40 ppb
2018-02-141610-017-12132.60 ppb
2018-05-091610-001-15331.70 ppb
2018-05-091610-004-1445ND
2018-05-091610-005-1511ND
2018-05-091610-006-14002.00 ppb
2018-05-091610-007-1215ND
2018-05-091610-008-1314ND
2018-05-091610-009-13472.10 ppb
2018-05-091610-014-13302.00 ppb
2018-05-091610-015-12351.70 ppb
2018-05-091610-017-12561.30 ppb
2018-08-151610-001-1115ND
2018-08-151610-005-11432.00 ppb
2018-08-151610-006-10562.60 ppb
2018-08-151610-007-12352.50 ppb
2018-08-151610-008-11512.40 ppb
2018-08-151610-009-10492.50 ppb
2018-08-151610-014-11062.70 ppb
2018-08-151610-015-12202.20 ppb
2018-08-151610-017-12051.80 ppb
2018-08-161610-004-10102.20 ppb
2018-11-161610-001-11392.70 ppb
2018-11-161610-005-15281.90 ppb
2018-11-161610-006-12402.70 ppb
2018-11-161610-007-14212.60 ppb
2018-11-161610-008-13013.10 ppb
2018-11-161610-009-12223.00 ppb
2018-11-161610-014-12032.60 ppb
2018-11-161610-015-13492.00 ppb
2018-11-161610-017-13281.80 ppb
2019-02-201610-001-1459ND
2019-02-201610-005-1305ND
2019-02-201610-006-1236ND
2019-02-201610-007-1424ND
2019-02-201610-008-1335ND
2019-02-201610-009-1226ND
2019-02-201610-014-1249ND
2019-02-201610-015-1405ND
2019-02-201610-017-1348ND
2019-05-081610-001-16001.80 ppb
2019-05-081610-004-1445ND
2019-05-081610-005-1500ND
2019-05-081610-006-12551.80 ppb
2019-05-081610-007-1330ND
2019-05-081610-008-15411.20 ppb
2019-05-081610-009-13102.10 ppb
2019-05-081610-014-12371.60 ppb
2019-05-081610-015-13511.20 ppb
2019-05-081610-017-1410ND
2019-08-141610-001-13422.10 ppb
2019-08-141610-004-1431ND
2019-08-141610-005-1255ND
2019-08-141610-006-11432.50 ppb
2019-08-141610-007-12102.30 ppb
2019-08-141610-008-1304ND
2019-08-141610-009-11332.40 ppb
2019-08-141610-014-11542.40 ppb
2019-08-141610-015-12261.50 ppb
2019-08-141610-017-12402.50 ppb
2019-11-131610-001-11552.00 ppb
2019-11-131610-004-1212ND
2019-11-131610-005-1224ND
2019-11-131610-006-1134ND
2019-11-131610-007-1315ND
2019-11-131610-008-1235ND
2019-11-131610-009-11251.90 ppb
2019-11-131610-014-1146ND
2019-11-131610-015-13021.60 ppb
2019-11-131610-017-1249ND