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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

City of Napa

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

 

255

Samples

0

Samples exceeding legal limit (MCL)

52

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.385 ppb409ND - 2.30 ppb
20150.564 ppb4416ND - 2.30 ppb
20160.466 ppb3810ND - 3.40 ppb
20170.367 ppb426ND - 4.40 ppb
20180.164 ppb446ND - 1.60 ppb
20190.183 ppb475ND - 2.30 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
2014-01-083761-007-0935ND
2014-01-083761-008-1030ND
2014-01-083761-009-1000ND
2014-01-083761-010-1050ND
2014-01-083761-011-1245ND
2014-01-083761-012-1305ND
2014-01-083761-024-1230ND
2014-01-083761-025-1110ND
2014-01-083761-028-1315ND
2014-04-023761-006-1245ND
2014-04-023761-007-10002.00 ppb
2014-04-023761-008-1055ND
2014-04-023761-009-1040ND
2014-04-023761-010-1110ND
2014-04-023761-011-1330ND
2014-04-023761-012-1355ND
2014-04-023761-024-1315ND
2014-04-023761-025-1130ND
2014-04-023761-028-1345ND
2014-07-093761-005-1145ND
2014-07-093761-006-1245ND
2014-07-093761-007-09252.30 ppb
2014-07-093761-008-1030ND
2014-07-093761-009-1015ND
2014-07-093761-010-10401.50 ppb
2014-07-093761-011-1410ND
2014-07-093761-012-14401.60 ppb
2014-07-093761-024-1355ND
2014-07-093761-025-1105ND
2014-07-093761-028-1430ND
2014-10-013761-006-1220ND
2014-10-013761-007-10101.80 ppb
2014-10-013761-008-1050ND
2014-10-013761-009-10351.10 ppb
2014-10-013761-010-11051.90 ppb
2014-10-013761-011-13201.20 ppb
2014-10-013761-012-13552.00 ppb
2014-10-013761-024-1300ND
2014-10-013761-025-1125ND
2014-10-013761-028-1335ND
2015-01-089590-007-10001.90 ppb
2015-01-089590-008-1105ND
2015-01-089590-009-1050ND
2015-01-089590-010-11151.10 ppb
2015-01-089590-011-1215ND
2015-01-089590-012-13301.30 ppb
2015-01-089590-024-1155ND
2015-01-089590-025-1130ND
2015-01-089590-028-13201.20 ppb
2015-04-019590-007-09502.00 ppb
2015-04-019590-008-1045ND
2015-04-019590-009-1030ND
2015-04-019590-010-10551.60 ppb
2015-04-019590-011-1330ND
2015-04-019590-012-13551.10 ppb
2015-04-019590-024-1315ND
2015-04-019590-025-1115ND
2015-04-019590-028-1340ND
2015-07-219590-005-1120ND
2015-07-219590-006-1415ND
2015-07-219590-007-09402.30 ppb
2015-07-219590-008-10351.40 ppb
2015-07-219590-009-1020ND
2015-07-219590-010-10451.80 ppb
2015-07-219590-011-1505ND
2015-07-219590-012-15302.10 ppb
2015-07-219590-024-1450ND
2015-07-219590-025-1200ND
2015-07-219590-028-1520ND
2015-10-079590-005-1155ND
2015-10-079590-006-1325ND
2015-10-079590-007-11101.80 ppb
2015-10-079590-008-1510ND
2015-10-079590-009-1525ND
2015-10-079590-010-14551.50 ppb
2015-10-079590-011-1415ND
2015-10-079590-012-1440ND
2015-10-079590-024-14001.20 ppb
2015-10-079590-025-1210ND
2015-10-079590-028-14301.30 ppb
2015-11-049590-006-1220ND
2015-11-049590-007-10301.20 ppb
2015-12-029590-006-1145ND
2015-12-029590-007-1030ND
2016-01-089590-007-12101.40 ppb
2016-01-089590-008-12451.50 ppb
2016-01-089590-009-12301.80 ppb
2016-01-089590-010-13001.90 ppb
2016-01-089590-011-13551.10 ppb
2016-01-089590-012-14301.90 ppb
2016-01-089590-024-13401.70 ppb
2016-01-089590-025-1320ND
2016-01-089590-028-14151.80 ppb
2016-04-069590-006-1230ND
2016-04-069590-008-1100ND
2016-04-069590-009-1045ND
2016-04-069590-010-1115ND
2016-04-069590-011-1345ND
2016-04-069590-012-1405ND
2016-04-069590-024-1330ND
2016-04-069590-025-1130ND
2016-04-069590-028-1400ND
2016-05-049590-007-10253.40 ppb
2016-07-279590-007-1245ND
2016-07-279590-008-1320ND
2016-07-279590-009-1305ND
2016-07-279590-010-1335ND
2016-07-279590-011-1655ND
2016-07-279590-012-1725ND
2016-07-279590-024-1645ND
2016-07-279590-025-1350ND
2016-07-279590-028-1710ND
2016-10-059590-006-1110ND
2016-10-059590-007-09001.20 ppb
2016-10-059590-008-1000ND
2016-10-059590-009-0945ND
2016-10-059590-010-1015ND
2016-10-059590-011-1210ND
2016-10-059590-012-1230ND
2016-10-059590-024-1155ND
2016-10-059590-025-1030ND
2016-10-059590-028-1225ND
2017-01-119590-007-10402.40 ppb
2017-01-119590-008-1125ND
2017-01-119590-009-1115ND
2017-01-119590-010-11354.40 ppb
2017-01-119590-011-14302.10 ppb
2017-01-119590-012-1500ND
2017-01-119590-024-14151.20 ppb
2017-01-119590-025-1155ND
2017-01-119590-028-14454.30 ppb
2017-02-019590-007-1050ND
2017-04-059590-006-1040ND
2017-04-059590-008-0912ND
2017-04-059590-009-0900ND
2017-04-059590-010-0928ND
2017-04-059590-011-1153ND
2017-04-059590-012-1214ND
2017-04-059590-024-1137ND
2017-04-059590-025-0950ND
2017-04-059590-028-1223ND
2017-07-209590-006-1330ND
2017-07-209590-007-1050ND
2017-07-209590-008-1141ND
2017-07-209590-009-1127ND
2017-07-209590-010-1155ND
2017-07-209590-011-1455ND
2017-07-209590-012-1515ND
2017-07-209590-024-1436ND
2017-07-209590-025-1216ND
2017-07-209590-028-1536ND
2017-10-049590-005-1154ND
2017-10-049590-007-0903ND
2017-10-049590-008-0959ND
2017-10-049590-009-0943ND
2017-10-049590-010-1014ND
2017-10-049590-011-1059ND
2017-10-049590-012-1034ND
2017-10-049590-024-1116ND
2017-10-049590-025-1138ND
2017-10-049590-028-1046ND
2017-11-019590-006-11301.000 ppb
2017-11-019590-007-1010ND
2017-12-069590-007-1150ND
2018-01-109590-007-1230ND
2018-01-109590-008-1310ND
2018-01-109590-009-1255ND
2018-01-109590-010-1325ND
2018-01-109590-011-1525ND
2018-01-109590-012-1545ND
2018-01-109590-024-1515ND
2018-01-109590-025-1340ND
2018-01-109590-028-1535ND
2018-04-119590-006-1430ND
2018-04-119590-008-1105ND
2018-04-119590-009-10451.000 ppb
2018-04-119590-010-11251.30 ppb
2018-04-119590-011-1230ND
2018-04-119590-012-12001.000 ppb
2018-04-119590-024-1245ND
2018-04-119590-025-1140ND
2018-04-119590-028-1215ND
2018-05-029590-006-1205ND
2018-06-069590-006-1240ND
2018-06-069590-007-10401.10 ppb
2018-08-089590-006-1310ND
2018-08-089590-007-1000ND
2018-09-059590-006-1045ND
2018-09-059590-007-1230ND
2018-09-189590-008-1015ND
2018-09-189590-009-1000ND
2018-09-189590-010-1040ND
2018-09-189590-011-1225ND
2018-09-189590-012-1300ND
2018-09-189590-024-12051.20 ppb
2018-09-189590-025-1100ND
2018-09-189590-028-1245ND
2018-10-033761-008-1040ND
2018-10-033761-009-1025ND
2018-10-033761-010-1055ND
2018-10-033761-011-1240ND
2018-10-033761-012-1320ND
2018-10-033761-024-1220ND
2018-10-033761-025-1110ND
2018-10-033761-028-1305ND
2018-11-073761-006-1225ND
2018-11-073761-007-1020ND
2018-12-053761-006-10301.60 ppb
2019-01-093761-006-09401.30 ppb
2019-01-093761-008-1000ND
2019-01-093761-009-09451.60 ppb
2019-01-093761-010-10101.80 ppb
2019-01-093761-011-1125ND
2019-01-093761-012-1150ND
2019-01-093761-024-1105ND
2019-01-093761-025-10302.30 ppb
2019-01-093761-028-1135ND
2019-03-063761-006-1020ND
2019-04-033761-006-1115ND
2019-04-033761-008-1030ND
2019-04-033761-009-1015ND
2019-04-033761-010-1045ND
2019-04-033761-011-1145ND
2019-04-033761-012-1215ND
2019-04-033761-024-1130ND
2019-04-033761-025-1055ND
2019-04-033761-028-1200ND
2019-05-013761-006-1040ND
2019-06-123761-006-1220ND
2019-06-123761-007-10001.60 ppb
2019-07-103761-008-0915ND
2019-07-103761-009-0900ND
2019-07-103761-010-0930ND
2019-07-103761-011-1245ND
2019-07-103761-012-1315ND
2019-07-103761-024-1230ND
2019-07-103761-025-0950ND
2019-07-103761-028-1300ND
2019-08-073761-007-1010ND
2019-08-083761-006-1120ND
2019-09-043761-006-1050ND
2019-09-043761-007-0915ND
2019-10-023761-006-1100ND
2019-10-023761-007-0840ND
2019-10-023761-008-0935ND
2019-10-023761-009-0910ND
2019-10-023761-010-0950ND
2019-10-023761-011-1200ND
2019-10-023761-012-1230ND
2019-10-023761-024-1140ND
2019-10-023761-025-1005ND
2019-10-023761-028-1215ND
2019-11-063761-006-1045ND
2019-11-063761-007-0915ND
2019-12-043761-007-1150ND