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EWG's Tap Water Database — 2021 UPDATE

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Barium

City of Davis

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

 

82

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014112.2 ppb1813ND - 220.0 ppb
201598.1 ppb1610ND - 220.0 ppb
2016120.0 ppb1611ND - 230.0 ppb
201768.3 ppb126ND - 180.0 ppb
201842.7 ppb113ND - 170.0 ppb
201951.1 ppb93ND - 180.0 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
2014-08-055810-052-0935ND
2014-08-055810-002-0822180.0 ppb
2014-08-055810-004-0810220.0 ppb
2014-08-055810-006-0837130.0 ppb
2014-08-055810-009-1120170.0 ppb
2014-08-055810-010-0918120.0 ppb
2014-08-055810-014-0950110.0 ppb
2014-08-055810-015-1036180.0 ppb
2014-08-055810-016-0853ND
2014-08-055810-017-0909130.0 ppb
2014-08-055810-018-0753170.0 ppb
2014-08-055810-019-0737180.0 ppb
2014-08-055810-020-0657160.0 ppb
2014-08-055810-023-0720ND
2014-08-055810-024-1025160.0 ppb
2014-08-055810-025-1000ND
2014-08-055810-026-1014110.0 ppb
2014-08-055810-030-1059ND
2015-07-075810-004-1253220.0 ppb
2015-07-075810-052-0648ND
2015-07-075810-030-0919ND
2015-07-075810-026-1041ND
2015-07-075810-025-0832ND
2015-07-075810-024-1120160.0 ppb
2015-07-075810-023-0904ND
2015-07-075810-002-1333170.0 ppb
2015-07-075810-006-1115120.0 ppb
2015-07-075810-010-1148130.0 ppb
2015-07-075810-015-1321190.0 ppb
2015-07-075810-016-0957ND
2015-07-075810-017-1030130.0 ppb
2015-07-075810-018-0721160.0 ppb
2015-07-075810-020-0757160.0 ppb
2015-07-215810-009-0747130.0 ppb
2016-01-265810-019-1005180.0 ppb
2016-07-135810-030-0844ND
2016-07-205810-052-0843ND
2016-07-205810-026-0757110.0 ppb
2016-07-275810-019-0922200.0 ppb
2016-07-275810-020-0836180.0 ppb
2016-07-275810-004-0750230.0 ppb
2016-07-275810-006-0817130.0 ppb
2016-07-275810-010-1021150.0 ppb
2016-07-275810-015-0943220.0 ppb
2016-07-275810-023-0855ND
2016-07-275810-016-0846ND
2016-07-275810-017-1027160.0 ppb
2016-07-275810-024-0955190.0 ppb
2016-07-275810-018-0803170.0 ppb
2016-07-275810-025-1009ND
2017-03-205810-057-1120ND
2017-06-145810-057-0820ND
2017-08-025810-025-0925100.0 ppb
2017-08-025810-020-0805160.0 ppb
2017-08-025810-019-0823180.0 ppb
2017-08-025810-052-1115ND
2017-08-025810-026-0943130.0 ppb
2017-08-025810-006-0859120.0 ppb
2017-08-025810-018-0843130.0 ppb
2017-08-035810-030-0625ND
2017-09-205810-057-0910ND
2017-12-125810-057-0735ND
2018-02-145810-057-0925ND
2018-04-185810-028-0855ND
2018-08-155810-020-1001160.0 ppb
2018-08-155810-028-0720ND
2018-08-155810-030-0640ND
2018-08-155810-025-0755ND
2018-08-155810-019-0902170.0 ppb
2018-08-155810-018-0819140.0 ppb
2018-08-155810-057-0840ND
2018-08-155810-052-0930ND
2018-11-075810-028-0818ND
2019-02-065810-028-0820ND
2019-08-079590-028-1033ND
2019-08-079590-057-1200ND
2019-08-079590-052-1134ND
2019-08-079590-030-1008ND
2019-08-079590-025-1102ND
2019-08-089590-019-1033180.0 ppb
2019-08-089590-020-1103170.0 ppb
2019-08-089590-018-1010110.0 ppb