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EWG's Tap Water Database — 2021 UPDATE

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Barium

California Water Service (CWS) - Visalia

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

 

132

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20144.06 ppb183ND - 41.9 ppb
20151.61 ppb242ND - 19.5 ppb
2016ND260ND
20176.25 ppb161ND - 100.0 ppb
2018ND210ND
20193.70 ppb271ND - 100.0 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
2014-01-215810-017-1152ND
2014-01-215810-023-0830ND
2014-04-025810-018-0815ND
2014-04-075810-024-0910ND
2014-05-125810-054-0942ND
2014-05-275701-075-135012.4 ppb
2014-06-105810-099-1210ND
2014-06-175701-182-125418.8 ppb
2014-07-075810-065-0900ND
2014-07-175810-066-1310ND
2014-09-155810-070-0842ND
2014-09-165810-182-0900ND
2014-09-225810-060-1005ND
2014-09-225701-060-101541.9 ppb
2014-09-225810-069-1245ND
2014-10-135810-022-0959ND
2014-10-155810-014-0840ND
2014-11-055810-076-1405ND
2015-01-185810-003-1327ND
2015-01-185810-015-1401ND
2015-01-265810-027-1200ND
2015-02-025810-016-1245ND
2015-02-025810-029-1200ND
2015-02-025810-156-0920ND
2015-02-045810-031-1000ND
2015-02-045810-044-1125ND
2015-04-065810-091-1115ND
2015-04-085810-030-1115ND
2015-05-115810-177-1016ND
2015-05-125810-045-1115ND
2015-05-215701-177-110019.2 ppb
2015-06-095701-182-091519.5 ppb
2015-06-125810-090-0802ND
2015-07-145810-026-0810ND
2015-07-165810-179-1110ND
2015-08-105810-040-1235ND
2015-08-135810-094-1210ND
2015-09-105810-089-1025ND
2015-09-105810-093-1005ND
2015-09-105810-098-1115ND
2015-11-045810-035-0800ND
2015-12-155810-064-1030ND
2016-01-125701-027-1205ND
2016-02-095810-057-0850ND
2016-03-075810-028-0810ND
2016-03-085810-061-1240ND
2016-03-105810-036-1240ND
2016-03-105810-159-1215ND
2016-03-145810-059-1130ND
2016-04-075810-067-1235ND
2016-05-035810-081-1259ND
2016-05-055810-046-1050ND
2016-05-055810-055-1025ND
2016-05-095810-012-1250ND
2016-05-245701-182-1010ND
2016-06-085810-056-1240ND
2016-06-085810-058-0950ND
2016-06-285810-167-1140ND
2016-07-125810-158-1240ND
2016-07-135810-010-0832ND
2016-07-215810-154-0955ND
2016-08-085810-053-1100ND
2016-08-115810-048-1005ND
2016-09-085810-080-1115ND
2016-09-085810-092-1045ND
2016-09-085810-166-1005ND
2016-11-075810-178-1200ND
2016-11-105810-037-0905ND
2017-01-095810-017-1105ND
2017-01-175810-023-0905ND
2017-04-105810-024-0855ND
2017-04-115810-018-1220ND
2017-05-085810-054-1000ND
2017-05-185810-043-0930ND
2017-07-055810-065-0850ND
2017-07-105810-066-1220ND
2017-08-175810-014-0805ND
2017-09-055810-047-1240100.0 ppb
2017-09-125810-064-1115ND
2017-09-135810-060-1245ND
2017-09-135810-069-1217ND
2017-09-135810-070-0912ND
2017-09-135810-182-0930ND
2017-10-115810-022-1210ND
2018-01-235810-015-1250ND
2018-02-065810-044-1250ND
2018-02-085810-029-1005ND
2018-02-085810-031-1110ND
2018-03-155701-028-1030ND
2018-03-155810-028-1040ND
2018-04-125810-030-1220ND
2018-04-195810-091-1400ND
2018-05-075810-045-1100ND
2018-05-105810-156-0920ND
2018-05-145810-027-1055ND
2018-06-265810-090-0830ND
2018-07-175810-179-1030ND
2018-07-185810-026-0925ND
2018-08-095810-040-0925ND
2018-08-095810-094-1050ND
2018-08-219590-089-1235ND
2018-09-135810-093-0820ND
2018-09-135810-098-0850ND
2018-11-145810-035-0815ND
2018-12-285810-087-0958ND
2019-02-145810-167-0915ND
2019-02-215810-057-1250ND
2019-03-115810-037-1040100.0 ppb
2019-03-145810-159-0930ND
2019-03-215810-036-1110ND
2019-03-215701-059-1035ND
2019-03-265810-059-1008ND
2019-04-015810-061-1222ND
2019-04-225810-067-0830ND
2019-05-135810-081-1125ND
2019-05-165810-046-1050ND
2019-05-165810-055-1010ND
2019-06-125810-056-1110ND
2019-06-125810-058-0945ND
2019-07-175810-010-0706ND
2019-07-175810-016-1146ND
2019-07-175810-154-1044ND
2019-07-175810-158-0933ND
2019-08-155810-048-1110ND
2019-08-165810-053-1110ND
2019-08-285810-016-1305ND
2019-08-295810-047-1030ND
2019-09-135810-092-1126ND
2019-09-135810-166-1040ND
2019-09-175810-080-1155ND
2019-10-175810-003-1225ND
2019-11-185810-178-1120ND