Know Your Environment. Protect Your Health.

Manganese

Walla Walla Water Division

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.556 ppb92ND - 3.00 ppb
20190.209 ppb112ND - 2.00 ppb
20200.140 ppb31ND - 0.420 ppb
2021ND10ND
2022ND50ND
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-01-023.00 ppb
2018-01-16ND
2018-01-23ND
2018-02-082.00 ppb
2018-03-28ND
2018-04-11ND
2018-04-16ND
2018-09-20ND
2018-11-20ND
2019-01-16ND
2019-01-29ND
2019-02-20ND
2019-03-04ND
2019-03-190.300 ppb
2019-04-10ND
2019-04-25ND
2019-05-08ND
2019-09-11ND
2019-10-22201910230375ND
2019-11-252.00 ppb
2020-01-212020012204200.420 ppb
2020-05-20202005210309ND
2020-07-08202007090292ND
2021-08-244292300ND
2022-02-164247536ND
2022-02-164247539ND
2022-05-234299747ND
2022-08-024335727ND
2022-11-214384535ND