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EWG's Tap Water Database — 2021 UPDATE

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Bromide

Zone 7 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

 

264

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014257.7 ppb3939120.0 ppb - 480.0 ppb
2015217.9 ppb292990.0 ppb - 360.0 ppb
2016217.0 ppb474750.0 ppb - 600.0 ppb
2017181.7 ppb4236ND - 580.0 ppb
2018253.3 ppb5150ND - 680.0 ppb
2019219.6 ppb5654ND - 550.0 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-065100-001-0945170.0 ppb
2014-01-065100-006-1120380.0 ppb
2014-01-065100-008-0915200.0 ppb
2014-01-065100-012-1240480.0 ppb
2014-02-035100-001-1025270.0 ppb
2014-02-185100-008-0950250.0 ppb
2014-03-245100-001-1000120.0 ppb
2014-03-245100-008-1045150.0 ppb
2014-04-075100-001-0940130.0 ppb
2014-04-075100-008-1120140.0 ppb
2014-05-055100-001-0930130.0 ppb
2014-05-055100-008-1035130.0 ppb
2014-06-095100-001-1000120.0 ppb
2014-06-095100-008-1035130.0 ppb
2014-06-105100-005-1000230.0 ppb
2014-06-105100-011-1040270.0 ppb
2014-06-115100-006-0825400.0 ppb
2014-06-115100-013-0930420.0 ppb
2014-06-165100-007-0910350.0 ppb
2014-06-175100-012-1125460.0 ppb
2014-06-195100-019-0935190.0 ppb
2014-07-075100-001-1000250.0 ppb
2014-07-075100-008-1015250.0 ppb
2014-08-045100-001-0950260.0 ppb
2014-08-045100-008-1035280.0 ppb
2014-08-115100-005-0920280.0 ppb
2014-08-115100-011-0940260.0 ppb
2014-09-085100-001-0840180.0 ppb
2014-09-085100-006-1150410.0 ppb
2014-09-095100-007-0930380.0 ppb
2014-09-105100-005-0830290.0 ppb
2014-09-105100-011-0800270.0 ppb
2014-10-065100-001-1110150.0 ppb
2014-10-065100-008-0825270.0 ppb
2014-11-035100-001-0935300.0 ppb
2014-11-035100-008-0930300.0 ppb
2014-11-135100-017-0905200.0 ppb
2014-12-085100-001-0905300.0 ppb
2014-12-085100-008-1045300.0 ppb
2015-01-055100-001-0935180.0 ppb
2015-01-055100-008-0945190.0 ppb
2015-02-025100-008-095590.0 ppb
2015-03-025100-001-1005120.0 ppb
2015-03-035100-017-0825150.0 ppb
2015-03-245100-019-1005190.0 ppb
2015-04-135100-001-0850110.0 ppb
2015-04-135100-008-0840110.0 ppb
2015-05-045100-001-0945120.0 ppb
2015-05-045100-008-1025110.0 ppb
2015-06-225100-001-1100340.0 ppb
2015-06-225100-008-0845240.0 ppb
2015-06-245100-019-0845180.0 ppb
2015-06-255100-017-0955130.0 ppb
2015-06-265100-005-0905280.0 ppb
2015-06-265100-007-0930360.0 ppb
2015-07-065100-001-0855340.0 ppb
2015-07-065100-008-1036310.0 ppb
2015-08-035100-001-0920330.0 ppb
2015-08-035100-008-1010320.0 ppb
2015-09-085100-001-0930280.0 ppb
2015-09-085100-008-1030300.0 ppb
2015-09-105100-017-0910170.0 ppb
2015-10-055100-001-0950260.0 ppb
2015-10-055100-008-0920280.0 ppb
2015-11-025100-001-0927180.0 ppb
2015-11-025100-008-0925220.0 ppb
2015-11-235100-017-1110160.0 ppb
2015-12-075100-001-0930270.0 ppb
2016-01-045100-001-0930310.0 ppb
2016-02-015100-001-1405170.0 ppb
2016-02-035100-012-1050420.0 ppb
2016-02-095100-005-0855280.0 ppb
2016-02-095100-011-0842250.0 ppb
2016-03-035100-006-1100410.0 ppb
2016-03-035100-017-0935180.0 ppb
2016-03-075100-001-092570.0 ppb
2016-03-295100-007-1245360.0 ppb
2016-03-305100-020-103090.0 ppb
2016-04-045100-005-1044250.0 ppb
2016-04-045100-008-090560.0 ppb
2016-04-045100-013-1425600.0 ppb
2016-04-045100-019-1135150.0 ppb
2016-04-065100-012-1105440.0 ppb
2016-04-065100-020-1155180.0 ppb
2016-05-025100-019-1225200.0 ppb
2016-05-045100-001-082550.0 ppb
2016-05-045100-008-120050.0 ppb
2016-05-195100-007-0900350.0 ppb
2016-05-195100-017-0945130.0 ppb
2016-05-195100-020-1058140.0 ppb
2016-06-025100-005-0820260.0 ppb
2016-06-065100-001-093560.0 ppb
2016-06-065100-008-102560.0 ppb
2016-07-115100-001-092090.0 ppb
2016-07-115100-007-1220420.0 ppb
2016-07-115100-008-101080.0 ppb
2016-07-115100-020-1317240.0 ppb
2016-07-135100-017-1035180.0 ppb
2016-07-135100-019-0920170.0 ppb
2016-08-015100-001-1005100.0 ppb
2016-08-015100-008-0955100.0 ppb
2016-08-015100-020-1340210.0 ppb
2016-08-105100-005-1250260.0 ppb
2016-09-125100-001-0955210.0 ppb
2016-09-125100-008-1025190.0 ppb
2016-09-195100-007-1130440.0 ppb
2016-09-195100-017-1207200.0 ppb
2016-10-105100-001-0915290.0 ppb
2016-10-105100-008-0930280.0 ppb
2016-10-135100-012-1400400.0 ppb
2016-11-075100-001-111770.0 ppb
2016-11-075100-008-1115280.0 ppb
2016-11-145100-017-1045170.0 ppb
2016-12-055100-001-090050.0 ppb
2016-12-055100-008-0925250.0 ppb
2017-01-045100-013-1000580.0 ppb
2017-01-045100-017-0945180.0 ppb
2017-01-235100-008-0930100.0 ppb
2017-01-235100-012-1030470.0 ppb
2017-01-235100-020-1125180.0 ppb
2017-02-145100-008-102340.0 ppb
2017-02-145100-020-1455120.0 ppb
2017-02-155100-001-104540.0 ppb
2017-03-135100-001-0900ND
2017-04-105100-001-0910ND
2017-04-125100-017-1110150.0 ppb
2017-05-015100-001-0930ND
2017-05-015100-008-112840.0 ppb
2017-06-055100-001-091020.0 ppb
2017-06-055100-006-1410450.0 ppb
2017-06-055100-007-1420430.0 ppb
2017-06-055100-008-1004ND
2017-07-105100-007-1010440.0 ppb
2017-07-105100-019-1135220.0 ppb
2017-07-115100-001-0935ND
2017-07-115100-008-0955ND
2017-07-115100-017-1210140.0 ppb
2017-07-125100-012-0900510.0 ppb
2017-07-135100-013-0915520.0 ppb
2017-07-315100-020-1040130.0 ppb
2017-08-095100-001-101540.0 ppb
2017-08-095100-008-103540.0 ppb
2017-09-055100-001-090030.0 ppb
2017-09-055100-008-094740.0 ppb
2017-09-255100-005-1010280.0 ppb
2017-10-025100-001-091530.0 ppb
2017-10-025100-008-101030.0 ppb
2017-10-035100-005-1055270.0 ppb
2017-10-035100-013-1025580.0 ppb
2017-10-035100-017-0950160.0 ppb
2017-10-055100-006-0935410.0 ppb
2017-10-055100-007-1015480.0 ppb
2017-10-165100-019-1255270.0 ppb
2017-11-065100-001-091540.0 ppb
2017-11-065100-008-105060.0 ppb
2017-12-045100-001-090050.0 ppb
2017-12-045100-008-094560.0 ppb
2018-01-225100-001-0946150.0 ppb
2018-01-255100-005-1335290.0 ppb
2018-02-055100-012-0905660.0 ppb
2018-02-055100-013-0850630.0 ppb
2018-02-055100-017-0950150.0 ppb
2018-02-065100-001-0958100.0 ppb
2018-02-065100-005-0912270.0 ppb
2018-02-065100-011-0855210.0 ppb
2018-02-285100-006-0945430.0 ppb
2018-02-285100-008-1100100.0 ppb
2018-03-075100-001-1123100.0 ppb
2018-03-075100-008-1010110.0 ppb
2018-04-095100-001-113760.0 ppb
2018-04-095100-008-102060.0 ppb
2018-04-095100-017-1035140.0 ppb
2018-04-105100-005-1240290.0 ppb
2018-04-105100-011-1215200.0 ppb
2018-04-105100-019-0925290.0 ppb
2018-04-115100-006-1010420.0 ppb
2018-04-115100-012-1040590.0 ppb
2018-04-115100-013-0940620.0 ppb
2018-05-075100-001-151560.0 ppb
2018-05-075100-008-133040.0 ppb
2018-06-045100-001-092060.0 ppb
2018-06-045100-008-101060.0 ppb
2018-07-095100-001-122560.0 ppb
2018-07-095100-005-1350270.0 ppb
2018-07-095100-008-092560.0 ppb
2018-07-095100-013-0930580.0 ppb
2018-07-095100-017-1120170.0 ppb
2018-07-095100-019-1000230.0 ppb
2018-07-115100-006-0935420.0 ppb
2018-07-115100-011-0900210.0 ppb
2018-08-065100-001-093560.0 ppb
2018-08-065100-008-092570.0 ppb
2018-08-075100-007-0845530.0 ppb
2018-09-105100-001-0830270.0 ppb
2018-09-105100-008-0840270.0 ppb
2018-09-255100-020-1314140.0 ppb
2018-10-085100-001-082570.0 ppb
2018-10-085100-008-0959280.0 ppb
2018-10-085100-012-1200490.0 ppb
2018-10-085100-019-1140310.0 ppb
2018-10-095100-017-0900150.0 ppb
2018-10-105100-007-1435510.0 ppb
2018-10-105100-020-1415260.0 ppb
2018-12-035100-008-1010230.0 ppb
2018-12-035100-020-1005ND
2018-12-045100-013-0920680.0 ppb
2018-12-045100-019-1000290.0 ppb
2018-12-175100-001-0923220.0 ppb
2019-01-075100-005-1215240.0 ppb
2019-01-075100-008-1017260.0 ppb
2019-01-075100-012-1100420.0 ppb
2019-01-075100-017-1025130.0 ppb
2019-01-075100-020-1150100.0 ppb
2019-01-085100-007-0910420.0 ppb
2019-01-085100-011-1015190.0 ppb
2019-01-085100-019-0940260.0 ppb
2019-02-045100-008-1028160.0 ppb
2019-03-045100-008-090780.0 ppb
2019-04-085100-007-1130430.0 ppb
2019-04-085100-008-092530.0 ppb
2019-04-085100-017-0916160.0 ppb
2019-04-095100-006-0920410.0 ppb
2019-04-095100-012-0935400.0 ppb
2019-04-095100-013-0955550.0 ppb
2019-04-095100-019-1040280.0 ppb
2019-05-065100-001-085030.0 ppb
2019-05-065100-008-121530.0 ppb
2019-06-035100-001-0940ND
2019-06-035100-008-0910ND
2019-07-085100-005-1015270.0 ppb
2019-07-085100-007-0950380.0 ppb
2019-07-085100-011-0945220.0 ppb
2019-07-085100-013-1015540.0 ppb
2019-07-085100-020-1130260.0 ppb
2019-07-095100-006-1145440.0 ppb
2019-07-095100-017-0925120.0 ppb
2019-07-095100-019-1045380.0 ppb
2019-07-105100-001-101020.0 ppb
2019-07-105100-008-111520.0 ppb
2019-08-055100-001-110540.0 ppb
2019-08-055100-008-091530.0 ppb
2019-08-055100-012-0905390.0 ppb
2019-08-055100-020-0935160.0 ppb
2019-09-095100-001-084040.0 ppb
2019-09-095100-008-100550.0 ppb
2019-10-075100-001-132530.0 ppb
2019-10-075100-005-1150280.0 ppb
2019-10-075100-006-0900410.0 ppb
2019-10-075100-007-0830380.0 ppb
2019-10-075100-008-121030.0 ppb
2019-10-075100-011-1050230.0 ppb
2019-10-075100-012-1015380.0 ppb
2019-10-075100-013-0945530.0 ppb
2019-10-075100-020-0920220.0 ppb
2019-10-085100-017-0830140.0 ppb
2019-10-085100-019-1015390.0 ppb
2019-11-045100-001-085540.0 ppb
2019-11-045100-008-103060.0 ppb
2019-12-025100-008-100670.0 ppb
2019-12-025100-020-0850230.0 ppb
2019-12-035100-017-1155140.0 ppb
2019-12-035100-019-1340350.0 ppb
2019-12-105100-017-1100130.0 ppb
2019-12-105100-019-0942320.0 ppb