Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromide

Castaic Lake Water Agency

Bromide is a naturally occurring element found in surface waters and groundwater. During drinking water treatment, bromide can combine with chlorine or other disinfectants, contributing to the formation of toxic tap water disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

294

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014122.1 ppb4333ND - 290.0 ppb
201591.3 ppb4729ND - 220.0 ppb
2016160.8 ppb4845ND - 310.0 ppb
2017162.5 ppb5151120.0 ppb - 230.0 ppb
2018137.4 ppb5046ND - 210.0 ppb
2019130.9 ppb5547ND - 190.0 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-062104-003-0800200.0 ppb
2014-01-062104-004-1010160.0 ppb
2014-01-062104-005-1020140.0 ppb
2014-01-062104-006-1040140.0 ppb
2014-02-032104-003-1200250.0 ppb
2014-02-032104-004-0950150.0 ppb
2014-02-032104-005-1000140.0 ppb
2014-02-032104-006-1015140.0 ppb
2014-03-032104-003-0800290.0 ppb
2014-03-032104-004-1000150.0 ppb
2014-03-032104-005-1010130.0 ppb
2014-03-032104-006-1050140.0 ppb
2014-04-072104-003-0800200.0 ppb
2014-04-072104-004-1055150.0 ppb
2014-04-072104-005-1100130.0 ppb
2014-04-072104-006-1120130.0 ppb
2014-04-102104-002-0800250.0 ppb
2014-05-052104-003-0800200.0 ppb
2014-05-052104-004-1015140.0 ppb
2014-05-052104-005-1025150.0 ppb
2014-05-052104-006-1045130.0 ppb
2014-06-022104-003-0800230.0 ppb
2014-06-022104-005-1005120.0 ppb
2014-06-022104-006-1025110.0 ppb
2014-07-072104-003-0800210.0 ppb
2014-07-072104-005-1005110.0 ppb
2014-07-072104-006-1020100.0 ppb
2014-08-042104-003-1105180.0 ppb
2014-08-042104-005-1015170.0 ppb
2014-08-042104-006-1035170.0 ppb
2014-09-022104-003-0930ND
2014-09-022104-005-1320ND
2014-09-022104-006-1340ND
2014-10-202104-003-0830130.0 ppb
2014-10-202104-005-1020ND
2014-10-202104-006-1040ND
2014-11-032104-003-0830110.0 ppb
2014-11-032104-005-1010ND
2014-11-032104-006-1025ND
2014-12-012104-003-0900100.0 ppb
2014-12-012104-004-1020ND
2014-12-012104-005-1030ND
2014-12-012104-006-1045ND
2015-01-052104-003-0900170.0 ppb
2015-01-052104-004-1000130.0 ppb
2015-01-052104-005-1010100.0 ppb
2015-01-052104-006-1020110.0 ppb
2015-02-022104-003-1010210.0 ppb
2015-02-022104-004-1145130.0 ppb
2015-02-022104-005-1200130.0 ppb
2015-02-022104-006-1215110.0 ppb
2015-03-022104-002-1450ND
2015-03-022104-004-1340ND
2015-03-022104-006-1310ND
2015-04-062104-002-1035100.0 ppb
2015-04-062104-004-1135ND
2015-04-062104-006-1150ND
2015-04-092104-003-0920ND
2015-04-142104-005-1325ND
2015-05-042104-003-1430ND
2015-05-042104-004-1020ND
2015-05-042104-005-1040ND
2015-05-042104-006-1055ND
2015-06-012104-003-0910210.0 ppb
2015-06-012104-004-0955140.0 ppb
2015-06-012104-005-1005130.0 ppb
2015-06-012104-006-1025110.0 ppb
2015-07-062104-003-0910220.0 ppb
2015-07-062104-004-1015140.0 ppb
2015-07-062104-005-1025120.0 ppb
2015-07-062104-006-1040130.0 ppb
2015-08-032104-003-1035200.0 ppb
2015-08-032104-004-1015140.0 ppb
2015-08-032104-005-1545120.0 ppb
2015-08-032104-006-1525ND
2015-09-082104-003-0920220.0 ppb
2015-09-082104-004-1025170.0 ppb
2015-09-082104-005-1035140.0 ppb
2015-09-082104-006-1100150.0 ppb
2015-10-052104-003-0845190.0 ppb
2015-10-052104-004-1015140.0 ppb
2015-10-052104-006-1405110.0 ppb
2015-11-022104-003-0915200.0 ppb
2015-11-022104-004-1005120.0 ppb
2015-11-022104-005-1015ND
2015-11-022104-006-1035ND
2015-12-072104-003-0836ND
2015-12-072104-004-1025ND
2015-12-072104-005-1035ND
2015-12-072104-006-1050ND
2016-01-042104-003-0910190.0 ppb
2016-01-042104-004-1030ND
2016-01-042104-005-1040ND
2016-01-042104-006-1100ND
2016-02-082104-002-1020190.0 ppb
2016-02-082104-004-1155150.0 ppb
2016-02-082104-005-1210130.0 ppb
2016-02-082104-006-1220140.0 ppb
2016-03-072104-003-0930240.0 ppb
2016-03-072104-004-1035150.0 ppb
2016-03-072104-005-1045130.0 ppb
2016-03-072104-006-1105140.0 ppb
2016-04-112104-004-1035160.0 ppb
2016-04-112104-005-1045130.0 ppb
2016-04-112104-006-1105140.0 ppb
2016-04-182104-003-1450190.0 ppb
2016-05-022104-003-0900280.0 ppb
2016-05-022104-004-1035170.0 ppb
2016-05-022104-005-1045140.0 ppb
2016-05-022104-006-1100150.0 ppb
2016-06-062104-003-0900220.0 ppb
2016-06-062104-004-1025170.0 ppb
2016-06-062104-005-1035150.0 ppb
2016-06-062104-006-1050160.0 ppb
2016-07-052104-003-1030310.0 ppb
2016-07-052104-004-1240150.0 ppb
2016-07-052104-005-1250130.0 ppb
2016-07-052104-006-1310140.0 ppb
2016-08-012104-003-0945260.0 ppb
2016-08-012104-004-1025150.0 ppb
2016-08-012104-005-1035130.0 ppb
2016-08-012104-006-1055150.0 ppb
2016-09-062104-003-0845210.0 ppb
2016-09-062104-004-1215160.0 ppb
2016-09-062104-005-1225140.0 ppb
2016-09-062104-006-1245150.0 ppb
2016-10-032104-003-0905210.0 ppb
2016-10-032104-004-1030170.0 ppb
2016-10-032104-005-1040150.0 ppb
2016-10-032104-006-1055160.0 ppb
2016-11-072104-003-0900220.0 ppb
2016-11-072104-004-1210180.0 ppb
2016-11-072104-005-1220150.0 ppb
2016-11-072104-006-1245160.0 ppb
2016-12-052104-003-1210220.0 ppb
2016-12-052104-004-1035170.0 ppb
2016-12-052104-005-1045160.0 ppb
2016-12-052104-006-1055170.0 ppb
2017-01-092104-004-1030170.0 ppb
2017-01-092104-005-1045140.0 ppb
2017-01-092104-006-1100150.0 ppb
2017-01-112104-003-1100190.0 ppb
2017-02-062104-003-1020200.0 ppb
2017-02-062104-004-1130170.0 ppb
2017-02-062104-005-1135140.0 ppb
2017-02-062104-006-1150150.0 ppb
2017-03-062104-003-0840220.0 ppb
2017-03-062104-004-1015160.0 ppb
2017-03-062104-005-1025140.0 ppb
2017-03-062104-006-1045150.0 ppb
2017-04-102104-003-0840220.0 ppb
2017-04-102104-004-1035160.0 ppb
2017-04-102104-005-1045140.0 ppb
2017-04-102104-006-1125150.0 ppb
2017-05-012104-003-0830230.0 ppb
2017-05-012104-004-1030170.0 ppb
2017-05-012104-005-1040150.0 ppb
2017-05-012104-006-1110160.0 ppb
2017-06-052104-002-1010200.0 ppb
2017-06-052104-003-0920230.0 ppb
2017-06-052104-003-1010200.0 ppb
2017-06-052104-004-1100170.0 ppb
2017-06-052104-005-1115150.0 ppb
2017-06-052104-006-1150160.0 ppb
2017-07-102104-002-1000180.0 ppb
2017-07-102104-003-0945200.0 ppb
2017-07-102104-004-1100160.0 ppb
2017-07-102104-005-1110130.0 ppb
2017-07-102104-006-1135140.0 ppb
2017-08-072104-002-0745160.0 ppb
2017-08-072104-003-1015190.0 ppb
2017-08-072104-004-0845160.0 ppb
2017-08-072104-005-0855140.0 ppb
2017-08-072104-006-0915150.0 ppb
2017-09-112104-002-1005160.0 ppb
2017-09-112104-003-1000190.0 ppb
2017-09-112104-004-1105170.0 ppb
2017-09-112104-005-1115150.0 ppb
2017-09-112104-006-1445160.0 ppb
2017-10-022104-003-0935160.0 ppb
2017-10-022104-005-1015140.0 ppb
2017-10-022104-006-1030140.0 ppb
2017-11-062104-003-0900130.0 ppb
2017-11-062104-004-1040160.0 ppb
2017-11-062104-005-1050130.0 ppb
2017-11-062104-006-1115140.0 ppb
2017-12-042104-003-0830120.0 ppb
2017-12-042104-005-1020130.0 ppb
2017-12-042104-006-1035130.0 ppb
2018-01-082104-003-0830110.0 ppb
2018-01-082104-004-1010160.0 ppb
2018-01-082104-005-1020130.0 ppb
2018-01-082104-006-1045140.0 ppb
2018-02-052104-003-0845110.0 ppb
2018-03-012104-003-0825120.0 ppb
2018-03-052104-004-1425160.0 ppb
2018-03-052104-005-1435130.0 ppb
2018-03-052104-006-1450140.0 ppb
2018-04-022104-002-0955100.0 ppb
2018-04-022104-003-0850130.0 ppb
2018-04-022104-004-1100190.0 ppb
2018-04-022104-006-1135190.0 ppb
2018-05-072104-003-1020140.0 ppb
2018-05-072104-004-1015210.0 ppb
2018-05-072104-005-1025170.0 ppb
2018-05-072104-006-1055190.0 ppb
2018-06-042104-003-0910130.0 ppb
2018-06-042104-004-1025210.0 ppb
2018-06-042104-006-1040210.0 ppb
2018-06-072104-005-1010170.0 ppb
2018-07-092104-002-0930ND
2018-07-092104-003-0930130.0 ppb
2018-07-092104-004-1000160.0 ppb
2018-07-092104-005-0925150.0 ppb
2018-07-092104-006-0940140.0 ppb
2018-08-062104-002-1025120.0 ppb
2018-08-062104-003-0830140.0 ppb
2018-08-062104-004-1125180.0 ppb
2018-08-062104-005-1135150.0 ppb
2018-08-062104-006-1150170.0 ppb
2018-09-102104-002-0920100.0 ppb
2018-09-102104-003-0900120.0 ppb
2018-09-102104-004-1020ND
2018-09-102104-005-1030140.0 ppb
2018-09-102104-006-1045ND
2018-10-082104-002-0945120.0 ppb
2018-10-082104-003-0845130.0 ppb
2018-10-082104-004-1055170.0 ppb
2018-10-082104-005-1110150.0 ppb
2018-10-082104-006-1130160.0 ppb
2018-11-052104-002-0945100.0 ppb
2018-11-052104-003-0845130.0 ppb
2018-11-052104-004-1045170.0 ppb
2018-11-052104-005-1055150.0 ppb
2018-11-052104-006-1110210.0 ppb
2018-12-032104-002-0945ND
2018-12-032104-004-1040160.0 ppb
2018-12-032104-005-1050140.0 ppb
2018-12-032104-006-1105140.0 ppb
2019-01-072104-002-1015110.0 ppb
2019-01-072104-004-1110160.0 ppb
2019-01-072104-005-1120140.0 ppb
2019-01-072104-006-1135150.0 ppb
2019-02-112104-004-1120160.0 ppb
2019-02-112104-005-1130140.0 ppb
2019-02-112104-006-1150160.0 ppb
2019-03-042104-002-1000130.0 ppb
2019-03-042104-004-1100180.0 ppb
2019-03-042104-005-1110160.0 ppb
2019-03-042104-006-1130170.0 ppb
2019-04-012104-002-0805150.0 ppb
2019-04-012104-003-1015130.0 ppb
2019-04-012104-004-1105170.0 ppb
2019-04-012104-005-1115150.0 ppb
2019-04-012104-006-1135160.0 ppb
2019-05-062104-002-0945140.0 ppb
2019-05-062104-003-0830160.0 ppb
2019-05-062104-004-1035180.0 ppb
2019-05-062104-005-1045160.0 ppb
2019-05-062104-006-1100170.0 ppb
2019-06-032104-002-1015120.0 ppb
2019-06-032104-003-0905150.0 ppb
2019-06-032104-004-1120170.0 ppb
2019-06-032104-005-1130150.0 ppb
2019-06-032104-006-1145160.0 ppb
2019-07-082104-002-1005150.0 ppb
2019-07-082104-003-0830160.0 ppb
2019-07-082104-004-1115190.0 ppb
2019-07-082104-005-1120160.0 ppb
2019-07-082104-006-1140180.0 ppb
2019-08-052104-002-0950140.0 ppb
2019-08-052104-003-0910160.0 ppb
2019-08-052104-004-1045170.0 ppb
2019-08-052104-005-1055150.0 ppb
2019-08-052104-006-1115150.0 ppb
2019-09-092104-002-1110140.0 ppb
2019-09-092104-003-0830160.0 ppb
2019-09-092104-004-1205190.0 ppb
2019-09-092104-005-1210160.0 ppb
2019-09-092104-006-1245180.0 ppb
2019-10-072104-002-1024ND
2019-10-072104-003-0855120.0 ppb
2019-10-072104-004-1104160.0 ppb
2019-10-072104-005-1122130.0 ppb
2019-10-072104-006-1146140.0 ppb
2019-11-042104-002-1000100.0 ppb
2019-11-042104-003-0950130.0 ppb
2019-11-042104-004-1105ND
2019-11-042104-005-1110ND
2019-11-042104-006-1125ND
2019-12-022104-004-1020ND
2019-12-022104-005-1030ND
2019-12-022104-006-1100ND
2019-12-042104-002-1010ND