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EWG's Tap Water Database — 2021 UPDATE

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Barium

Rancho California Water District

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.

 

118

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201441.8 ppb174ND - 270.0 ppb
201552.0 ppb2524ND - 170.0 ppb
201655.8 ppb109ND - 120.0 ppb
201764.9 ppb2322ND - 280.0 ppb
201866.1 ppb3127ND - 210.0 ppb
201926.7 ppb122ND - 210.0 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
2014-01-164790-090-1039ND
2014-04-024790-084-1000ND
2014-04-024790-085-1030ND
2014-04-024790-086-1100ND
2014-04-034790-043-1015150.0 ppb
2014-04-094790-042-1122270.0 ppb
2014-05-284790-143-0930ND
2014-06-034790-025-0855ND
2014-07-104790-024-0840ND
2014-08-064790-143-0905ND
2014-08-074790-040-1010ND
2014-08-074790-095-0905ND
2014-09-044790-059-0935130.0 ppb
2014-10-024790-029-0940ND
2014-10-024790-041-1018ND
2014-10-094790-047-1000160.0 ppb
2014-12-094790-019-1000ND
2015-01-294790-142-103042.0 ppb
2015-02-204790-034-094525.0 ppb
2015-03-054790-028-093228.0 ppb
2015-03-114790-048-104825.0 ppb
2015-04-084790-046-085864.0 ppb
2015-04-164790-017-103040.0 ppb
2015-04-214790-018-0930170.0 ppb
2015-04-224790-053-120069.0 ppb
2015-04-224790-142-101541.0 ppb
2015-05-064790-143-105044.0 ppb
2015-05-144790-097-114559.0 ppb
2015-06-024790-045-1202ND
2015-06-024790-051-112230.0 ppb
2015-07-074790-015-100037.0 ppb
2015-07-144790-142-000036.0 ppb
2015-08-054790-143-113541.0 ppb
2015-08-074790-027-084075.0 ppb
2015-09-094790-058-101739.0 ppb
2015-09-104790-071-111352.0 ppb
2015-10-064790-065-104564.0 ppb
2015-10-144790-142-104539.0 ppb
2015-11-044790-035-124035.0 ppb
2015-11-044790-143-095550.0 ppb
2015-12-094790-038-0955130.0 ppb
2015-12-094790-046-092566.0 ppb
2016-01-134790-044-0900120.0 ppb
2016-01-204790-142-103062.0 ppb
2016-02-294790-150-183035.0 ppb
2016-03-154790-037-120065.0 ppb
2016-04-144790-142-110047.0 ppb
2016-05-114790-036-123051.0 ppb
2016-07-064790-031-1115ND
2016-07-254790-012-123085.0 ppb
2016-07-274790-142-113045.0 ppb
2016-11-094790-153-111048.0 ppb
2017-01-184790-090-112052.0 ppb
2017-02-034790-153-105044.0 ppb
2017-03-234790-142-105547.0 ppb
2017-04-114790-042-1045280.0 ppb
2017-04-114790-043-1000100.0 ppb
2017-04-114790-084-094036.0 ppb
2017-04-114790-085-104031.0 ppb
2017-04-124790-142-103040.0 ppb
2017-04-274790-086-102525.0 ppb
2017-05-044790-153-101021.0 ppb
2017-06-074790-025-092044.0 ppb
2017-07-114790-024-0945110.0 ppb
2017-07-134790-142-1035ND
2017-08-044790-040-084524.0 ppb
2017-08-094790-095-100096.0 ppb
2017-08-104790-153-121530.0 ppb
2017-09-014790-150-093053.0 ppb
2017-09-284790-059-0943140.0 ppb
2017-10-114790-041-110746.0 ppb
2017-10-174790-029-110158.0 ppb
2017-11-084790-150-144549.0 ppb
2017-11-224790-151-1100120.0 ppb
2017-12-134790-019-103847.0 ppb
2018-01-044790-142-124224.0 ppb
2018-02-074790-034-092328.0 ppb
2018-02-074790-150-124237.0 ppb
2018-02-074790-151-1148110.0 ppb
2018-03-074790-035-105038.0 ppb
2018-03-154790-018-1125170.0 ppb
2018-03-154790-048-105726.0 ppb
2018-04-134790-017-100049.0 ppb
2018-04-134790-053-120594.0 ppb
2018-04-254790-152-113529.0 ppb
2018-05-034790-051-102032.0 ppb
2018-05-034790-150-113031.0 ppb
2018-05-034790-151-1235100.0 ppb
2018-05-184790-097-091857.0 ppb
2018-05-234790-047-1004140.0 ppb
2018-06-074790-045-1100ND
2018-07-174790-152-1045210.0 ppb
2018-07-184790-015-090139.0 ppb
2018-08-094790-151-100096.0 ppb
2018-08-144790-150-091429.0 ppb
2018-08-154790-027-102970.0 ppb
2018-09-114790-071-085552.0 ppb
2018-09-134790-051-103528.0 ppb
2018-10-034790-152-1030200.0 ppb
2018-10-164790-065-090052.0 ppb
2018-10-174790-155-124049.0 ppb
2018-11-064790-150-0957ND
2018-11-064790-151-1116ND
2018-11-274790-143-0946ND
2018-12-144790-038-0815130.0 ppb
2018-12-174790-046-1210130.0 ppb
2019-01-094790-152-1100210.0 ppb
2019-01-094790-155-0930ND
2019-02-124790-153-1201ND
2019-02-194790-150-0958ND
2019-02-194790-151-0841ND
2019-03-264790-037-0950ND
2019-04-024790-155-1115ND
2019-05-014790-036-1015ND
2019-05-074790-012-0831110.0 ppb
2019-05-154790-044-0955ND
2019-07-014790-031-1052ND
2019-07-224790-155-0820ND