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EWG's Tap Water Database — 2021 UPDATE

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Manganese

City of Watsonville

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

 

114

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.08 ppb261ND - 28.0 ppb
2015ND110ND
2016ND110ND
20171.39 ppb231ND - 32.0 ppb
20181.82 ppb111ND - 20.0 ppb
2019ND80ND

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
2014-01-222385-031-1235ND
2014-02-182385-031-0825ND
2014-03-112385-031-1525ND
2014-03-199590-004-0800ND
2014-03-199590-005-0745ND
2014-03-199590-006-0800ND
2014-03-199590-007-0840ND
2014-03-199590-009-1100ND
2014-03-199590-010-0915ND
2014-03-199590-011-100028.0 ppb
2014-03-199590-012-0920ND
2014-03-199590-013-0835ND
2014-03-199590-014-0740ND
2014-03-199590-015-0805ND
2014-03-199590-016-0900ND
2014-03-199590-030-0900ND
2014-04-152385-031-1330ND
2014-04-292385-031-1235ND
2014-05-132385-031-1005ND
2014-06-162385-031-0930ND
2014-07-282385-031-0930ND
2014-08-112385-031-0935ND
2014-09-102385-031-0815ND
2014-10-202385-031-1250ND
2014-11-062385-031-1055ND
2014-12-082385-031-0945ND
2015-01-122385-031-0945ND
2015-02-032385-031-0900ND
2015-03-162385-031-0920ND
2015-04-132385-031-0920ND
2015-05-112385-031-1035ND
2015-06-082385-031-1000ND
2015-08-032385-031-0950ND
2015-09-232385-031-1225ND
2015-10-122385-031-1055ND
2015-11-022385-031-1115ND
2015-12-072385-031-0920ND
2016-01-112385-031-1105ND
2016-02-032385-031-1130ND
2016-03-142385-031-1455ND
2016-04-122385-031-1445ND
2016-06-082385-031-0958ND
2016-07-182385-031-1515ND
2016-08-012385-031-1120ND
2016-09-202385-031-1250ND
2016-10-122385-031-0830ND
2016-11-072385-031-1115ND
2016-12-082385-031-1350ND
2017-01-092385-031-1500ND
2017-02-072385-031-1030ND
2017-03-159590-004-1040ND
2017-03-159590-005-0905ND
2017-03-159590-006-0910ND
2017-03-159590-007-1100ND
2017-03-159590-009-1030ND
2017-03-159590-010-0955ND
2017-03-159590-011-1010ND
2017-03-159590-012-0935ND
2017-03-159590-013-0945ND
2017-03-159590-014-0825ND
2017-03-159590-015-1010ND
2017-03-159590-016-0840ND
2017-03-159590-030-110032.0 ppb
2017-04-102385-031-1230ND
2017-05-082385-031-1400ND
2017-06-052385-031-1420ND
2017-07-192385-031-1245ND
2017-08-022385-031-1535ND
2017-10-092385-031-1432ND
2017-11-132385-031-0945ND
2017-12-042385-031-1015ND
2018-01-172385-031-120020.0 ppb
2018-02-052385-031-1515ND
2018-03-132385-031-1000ND
2018-04-092385-031-1100ND
2018-05-072385-031-0900ND
2018-06-042385-031-1100ND
2018-07-162385-031-0900ND
2018-08-132385-031-1450ND
2018-09-182385-031-0935ND
2018-10-082385-031-0830ND
2018-11-072385-031-1355ND
2019-03-122385-031-1005ND
2019-04-242385-031-1130ND
2019-05-022385-031-1015ND
2019-06-052385-031-0835ND
2019-07-152385-031-1015ND
2019-08-122385-031-1130ND
2019-09-162385-031-1310ND
2019-10-072385-031-1410ND
2020-03-11202003130089ND
2020-03-11202003130096ND
2020-03-11202003130108ND
2020-03-112020031301584.50 ppb
2020-03-11202003130098ND
2020-03-1120200313012035.0 ppb
2020-03-112020031301054.50 ppb
2020-03-11202003130092ND
2020-03-11202003130103ND
2020-03-112020031301150.640 ppb
2020-03-11202003130123ND
2020-06-102020061200683.80 ppb
2020-09-16202009180241ND
2020-09-16202009180230ND
2020-09-16202009180229ND
2020-09-162020091802363.70 ppb
2020-09-16202009180228ND
2020-09-1620200918023931.0 ppb
2020-09-162020091802385.40 ppb
2020-09-16202009180240ND
2020-09-16202009180237ND
2020-09-162020091802310.710 ppb
2020-09-16202009180235ND
2020-11-04202011060127ND