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EWG's Tap Water Database — 2021 UPDATE

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Barium

San Jose Water Company

Barium is a mineral present in rocks, soil and water. High concentrations of barium in drinking water increase the risk of cardiovascular disease and hypertension.

MORE ABOUT THIS CONTAMINANT

 

174

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014160.7 ppb2921ND - 310.0 ppb
2015118.2 ppb2213ND - 290.0 ppb
2016142.6 ppb3825ND - 330.0 ppb
2017151.4 ppb2821ND - 310.0 ppb
2018137.5 ppb2418ND - 290.0 ppb
2019105.2 ppb3321ND - 290.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 700 ppb

The EWG Health Guideline of 700 ppb for barium was defined by EWG as benchmark that protects against harm to the kidneys and the cardiovascular system.

EPA Maximum Contaminant
Level (MCL) 2,000 ppb

The legal limit for barium, established in 1991, was based on a 10-week study of barium exposure in 11 adult male volunteers. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-071610-067-0905160.0 ppb
2014-01-081610-136-0913ND
2014-01-131610-093-0850200.0 ppb
2014-02-041610-002-0820ND
2014-02-041610-023-0915110.0 ppb
2014-02-101610-173-1355150.0 ppb
2014-03-041610-113-0925290.0 ppb
2014-03-061610-178-0845220.0 ppb
2014-03-071610-074-1020ND
2014-03-121610-170-0900280.0 ppb
2014-03-121610-171-0930310.0 ppb
2014-03-171610-141-1031190.0 ppb
2014-04-031610-033-1050230.0 ppb
2014-04-081610-086-1055280.0 ppb
2014-06-031610-169-0815ND
2014-06-101610-179-0915240.0 ppb
2014-06-111610-108-0950280.0 ppb
2014-07-081610-133-0912ND
2014-07-101610-172-1000240.0 ppb
2014-08-061610-003-0820ND
2014-08-141610-114-0845230.0 ppb
2014-08-181610-109-1005280.0 ppb
2014-09-231610-027-0845160.0 ppb
2014-11-031610-102-0859ND
2014-11-051610-030-1230200.0 ppb
2014-11-051610-094-0940280.0 ppb
2014-12-021610-068-1020140.0 ppb
2014-12-031610-116-1250190.0 ppb
2014-12-031610-138-0950ND
2015-01-071610-108-1140290.0 ppb
2015-01-071610-175-1140290.0 ppb
2015-01-131610-074-1108ND
2015-01-131610-085-0905ND
2015-03-031610-112-1105250.0 ppb
2015-03-041610-024-1120120.0 ppb
2015-03-051610-156-0922210.0 ppb
2015-03-111610-125-0925ND
2015-03-121610-180-1006ND
2015-03-121610-183-1215220.0 ppb
2015-04-081610-181-0915210.0 ppb
2015-04-131610-016-0930110.0 ppb
2015-05-141610-128-0846ND
2015-05-141610-130-0918ND
2015-06-031610-134-1022ND
2015-07-161610-116-0900180.0 ppb
2015-08-051610-072-1100ND
2015-08-131610-029-1020140.0 ppb
2015-08-261610-156-1120200.0 ppb
2015-09-021610-111-0840190.0 ppb
2015-09-241610-090-1145190.0 ppb
2015-10-201610-126-0840ND
2016-01-071610-185-0955ND
2016-01-071610-186-0933ND
2016-01-121610-187-1410ND
2016-02-041610-107-1024280.0 ppb
2016-02-041610-131-1130ND
2016-02-081610-142-0926220.0 ppb
2016-02-081610-143-0935200.0 ppb
2016-02-111610-004-0910ND
2016-02-181610-117-1202240.0 ppb
2016-02-221610-031-0846210.0 ppb
2016-02-221610-034-0910190.0 ppb
2016-02-231610-025-0900110.0 ppb
2016-02-231610-085-1100ND
2016-02-241610-135-1055ND
2016-02-241610-137-1132ND
2016-02-251610-005-1230200.0 ppb
2016-03-011610-070-1015ND
2016-03-011610-101-0920ND
2016-03-021610-093-0955210.0 ppb
2016-03-021610-118-1350210.0 ppb
2016-03-031610-088-0855190.0 ppb
2016-03-171610-168-0930ND
2016-03-171610-176-1105290.0 ppb
2016-03-281610-022-1332130.0 ppb
2016-03-281610-129-1210ND
2016-03-281610-177-0940180.0 ppb
2016-04-141610-184-0830120.0 ppb
2016-05-041233-198-1200300.0 ppb
2016-05-241610-075-1130ND
2016-06-141610-092-1015210.0 ppb
2016-06-151610-144-1030170.0 ppb
2016-06-151233-199-1300180.0 ppb
2016-06-201610-093-1020180.0 ppb
2016-06-231610-067-1100160.0 ppb
2016-07-261233-198-1230300.0 ppb
2016-08-251233-194-1200280.0 ppb
2016-10-031233-196-1100330.0 ppb
2016-12-151233-195-1200330.0 ppb
2017-01-111610-108-0947240.0 ppb
2017-01-111610-109-1010270.0 ppb
2017-01-121610-002-0830ND
2017-01-171610-023-0920120.0 ppb
2017-01-171610-027-0950110.0 ppb
2017-01-171610-085-1150ND
2017-01-181610-068-1055170.0 ppb
2017-01-181610-172-1335230.0 ppb
2017-01-261610-086-1415280.0 ppb
2017-01-261610-170-1115310.0 ppb
2017-01-311610-094-1215210.0 ppb
2017-01-311610-169-0805ND
2017-01-311610-178-1250220.0 ppb
2017-01-311610-179-1520220.0 ppb
2017-02-011610-173-1355110.0 ppb
2017-02-021610-138-0900ND
2017-02-081610-133-1150110.0 ppb
2017-02-161610-030-1130190.0 ppb
2017-02-271610-172-1335230.0 ppb
2017-03-221610-102-0800ND
2017-03-231610-171-0630270.0 ppb
2017-03-281610-110-1130260.0 ppb
2017-03-281610-141-0830180.0 ppb
2017-03-291610-033-0830220.0 ppb
2017-05-101610-003-0840100.0 ppb
2017-05-241610-140-1020190.0 ppb
2017-06-291610-136-1000ND
2017-12-141610-074-1350ND
2018-01-091610-030-1110220.0 ppb
2018-01-101610-029-0905140.0 ppb
2018-01-111610-156-0940180.0 ppb
2018-01-171610-074-1305ND
2018-01-181610-126-1249110.0 ppb
2018-01-181610-134-1200110.0 ppb
2018-01-181610-137-1154ND
2018-01-221610-085-1057100.0 ppb
2018-01-241610-101-1450ND
2018-01-241610-180-1335ND
2018-01-251610-125-1130ND
2018-01-251610-128-1200110.0 ppb
2018-01-251610-130-1055ND
2018-01-251610-175-1345290.0 ppb
2018-01-301610-142-0940190.0 ppb
2018-01-311610-090-1115240.0 ppb
2018-01-311610-181-1210230.0 ppb
2018-02-011610-111-1010170.0 ppb
2018-02-011610-183-1220230.0 ppb
2018-02-071610-112-0924200.0 ppb
2018-03-061610-024-1345120.0 ppb
2018-04-261610-113-1310270.0 ppb
2018-08-161610-114-1107210.0 ppb
2018-08-161610-116-0935180.0 ppb
2019-01-141610-074-1340ND
2019-01-161610-199-0915170.0 ppb
2019-01-231610-022-0910130.0 ppb
2019-01-241610-025-1200ND
2019-01-241610-168-1325ND
2019-01-301610-004-0900ND
2019-01-301610-070-0950ND
2019-01-301610-185-1152ND
2019-01-311610-085-0846ND
2019-02-051610-107-0905260.0 ppb
2019-02-051610-108-0923230.0 ppb
2019-02-051610-178-1200230.0 ppb
2019-02-071610-117-1040230.0 ppb
2019-02-141610-186-0932ND
2019-02-211610-088-0935180.0 ppb
2019-02-211610-131-1000ND
2019-02-211610-176-1130290.0 ppb
2019-02-281610-129-0945100.0 ppb
2019-02-281610-143-0945190.0 ppb
2019-03-061610-135-1130ND
2019-03-061610-144-1420180.0 ppb
2019-03-071610-173-1045170.0 ppb
2019-03-141610-177-1135190.0 ppb
2019-03-141610-187-1335ND
2019-03-211610-031-1121230.0 ppb
2019-03-211610-067-1315180.0 ppb
2019-03-211610-184-1017120.0 ppb
2019-03-251610-034-1100190.0 ppb
2019-03-261610-136-1329ND
2019-03-271610-093-1430200.0 ppb
2019-12-121610-141-08550.190 ppb
2019-12-121610-142-10000.200 ppb
2019-12-161610-144-09150.180 ppb