Barium

City of American Canyon

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	ND	4	0	ND
2015	ND	4	0	ND
2016	ND	4	0	ND
2017	ND	3	0	ND
2018	33.5 ppb	4	4	23.0 ppb - 56.0 ppb
2019	35.7 ppb	3	3	29.0 ppb - 48.0 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
2014-01-14	9541-004-0820	ND
2014-04-08	9541-004-0830	ND
2014-07-08	9541-004-0825	ND
2014-10-14	9541-004-0815	ND
2015-01-13	9541-004-1020	ND
2015-04-14	9541-004-1045	ND
2015-07-14	9541-004-0815	ND
2015-10-15	9541-004-1010	ND
2016-01-12	9541-004-0730	ND
2016-04-12	9541-004-1230	ND
2016-07-13	9541-004-0950	ND
2016-10-11	9541-004-1040	ND
2017-01-10	9541-004-1105	ND
2017-04-11	9541-004-1030	ND
2017-07-11	9541-004-0820	ND
2018-01-09	9541-004-1500	28.0 ppb
2018-04-10	9541-004-1045	56.0 ppb
2018-07-10	9541-004-1310	23.0 ppb
2018-10-09	9541-004-0850	27.0 ppb
2019-01-08	9541-004-0840	30.0 ppb
2019-04-09	9541-004-0750	48.0 ppb
2019-07-09	9541-004-0845	29.0 ppb