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EWG's Tap Water Database — 2019 UPDATE

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Manganese

City of Hollister

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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND70ND
2014ND150ND
201594.0 ppb52ND - 350.0 ppb
2016N/A00N/A
2017ND50ND

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
2012-09-261610-005-1045ND
2012-09-261610-002-1135ND
2012-09-261610-009-1220ND
2012-09-261610-007-1055ND
2012-09-261610-001-1125ND
2012-09-261610-006-1100ND
2013-09-101610-002-1120ND
2013-09-101610-005-0950ND
2013-09-101610-001-1055ND
2013-09-101610-006-0930ND
2013-09-101610-007-0940ND
2013-09-101610-009-1020ND
2013-09-101610-018-0838ND
2014-05-061610-006-1110ND
2014-05-061610-005-1210ND
2014-05-061610-007-1355ND
2014-05-061610-009-1255ND
2014-05-061610-001-1150ND
2014-09-161610-002-1135ND
2014-09-161610-006-1335ND
2014-09-161610-009-1230ND
2014-09-161610-005-1100ND
2014-09-161610-007-1050ND
2014-10-141610-005-0930ND
2014-10-141610-009-1105ND
2014-10-141610-001-1015ND
2014-10-141610-006-0910ND
2014-10-141610-007-0855ND
2015-09-161610-005-0847ND
2015-09-161610-006-0914ND
2015-09-161610-001-1035120.0 ppb
2015-09-161610-007-0900ND
2015-09-161610-009-1150350.0 ppb
2017-12-281610-005-0934ND
2017-12-281610-002-0900ND
2017-12-281610-001-0850ND
2017-12-281610-007-0958ND
2017-12-281610-006-1020ND