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EWG's Tap Water Database — 2021 UPDATE

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Manganese

California Water Service - Bear Gulch

Manganese is a naturally occurring element that is common in food and drinking water. Excessive manganese exposures may impair children's attention, memory and intellectual capacity. Click here to read more about manganese.

MORE ABOUT THIS CONTAMINANT

 

30

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
2014N/A00N/A
2015N/A00N/A
2016ND80ND
2017ND90ND
2018ND40ND
20192.06 ppb85ND - 5.70 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 100 ppb

The EWG Health Guideline of 100 ppb for manganese was defined by the state of Minnesota as a health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the brain and nervous system.

ppb = parts per billion

All test results

Date Lab ID Result
2016-02-165810-907-1135ND
2016-02-165810-002-1045ND
2016-02-225701-002-1312ND
2016-03-075701-002-1459ND
2016-04-185701-002-1123ND
2016-05-025701-002-1328ND
2016-06-085701-002-1241ND
2016-06-305701-909-0849ND
2017-01-175701-002-1023ND
2017-02-085701-002-0939ND
2017-02-155810-002-1243ND
2017-02-155810-907-1256ND
2017-03-065701-002-1339ND
2017-05-105810-002-1337ND
2017-06-195701-002-1338ND
2017-11-275701-002-1112ND
2017-12-065701-002-1335ND
2018-01-085701-002-0931ND
2018-02-065701-002-1039ND
2018-02-075810-907-1213ND
2018-02-075810-002-1229ND
2019-01-305701-002-1241ND
2019-02-205810-907-1344ND
2019-02-265810-002-1416ND
2019-03-04A9B1204-040.470 ppb
2019-05-06A9D1985-045.30 ppb
2019-05-31A9E0239-040.520 ppb
2019-08-05A9G0868-044.50 ppb
2019-11-04A9J1821-045.70 ppb
2020-02-03ADA1055-040.500 ppb