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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Golden State Water Company - Ojai

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.

 

69

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND120ND
2016ND120ND
2017ND120ND
2018ND100ND
2019ND110ND

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
2014-01-022706-014-1020ND
2014-02-052706-014-1005ND
2014-03-052706-014-0940ND
2014-04-022706-014-1120ND
2014-05-072706-014-0915ND
2014-06-042706-014-0950ND
2014-07-022706-014-0905ND
2014-08-062706-014-0920ND
2014-09-032706-014-0925ND
2014-10-012706-014-0840ND
2014-11-052706-014-0910ND
2014-12-032706-014-1130ND
2015-01-072706-014-0930ND
2015-02-042706-014-1105ND
2015-03-042706-014-1120ND
2015-04-012706-014-0915ND
2015-05-062706-014-0930ND
2015-06-032706-014-0915ND
2015-07-012706-014-0915ND
2015-08-052706-014-1022ND
2015-09-022706-014-0858ND
2015-10-072706-014-0925ND
2015-11-042706-014-0900ND
2015-12-022706-014-1245ND
2016-01-072706-014-0950ND
2016-02-032706-014-1126ND
2016-03-022706-014-0950ND
2016-04-062706-014-1115ND
2016-05-042706-014-1200ND
2016-06-012706-014-0825ND
2016-07-062706-014-0945ND
2016-08-032706-014-0945ND
2016-09-072706-014-1140ND
2016-10-052706-014-0950ND
2016-11-022706-014-1142ND
2016-12-072706-014-1046ND
2017-01-109590-014-1056ND
2017-02-079590-014-1129ND
2017-03-079590-014-0958ND
2017-04-049590-014-1016ND
2017-05-029590-014-0843ND
2017-06-205867-014-1045ND
2017-07-195867-014-1340ND
2017-08-095867-014-1105ND
2017-09-065867-014-1518ND
2017-10-025867-014-1045ND
2017-11-035867-014-1053ND
2017-12-135867-014-1017ND
2018-01-085867-014-1345ND
2018-02-065867-014-1055ND
2018-04-025867-014-1020ND
2018-05-025867-014-1024ND
2018-06-055867-014-1112ND
2018-07-035867-014-1027ND
2018-08-065867-014-0934ND
2018-09-045867-014-1048ND
2018-10-025867-014-1025ND
2018-11-065867-014-1015ND
2019-01-025867-014-1101ND
2019-02-055867-014-0933ND
2019-05-065867-014-1334ND
2019-05-215867-014-1018ND
2019-06-035867-014-1140ND
2019-07-015867-014-1010ND
2019-08-065867-014-0932ND
2019-09-045867-014-0932ND
2019-10-075867-014-1441ND
2019-11-075867-014-1445ND
2019-12-035867-014-0953ND