Know Your Environment. Protect Your Health.

Manganese

Tualatin Valley Water District

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20185.95 ppb85ND - 19.0 ppb
20191.17 ppb32ND - 2.50 ppb
2020ND100ND
20211.17 ppb221.14 ppb - 1.20 ppb
2022ND10ND
2023ND10ND

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
2018-04-2520180426065019.0 ppb
2018-04-252018042606511.70 ppb
2018-07-172018071908690.910 ppb
2018-07-1720180719076810.00 ppb
2018-07-17201807190769ND
2018-09-17826001901-IND
2018-10-15201810170634ND
2018-10-1520181017061716.0 ppb
2019-01-152019011604561.000 ppb
2019-01-152019011604772.50 ppb
2019-10-01927402701AND
2020-01-21002104103ND
2020-02-25005603502-IND
2020-02-25005603501ND
2020-04-17010801201ND
2020-04-17010801202-IND
2020-08-26023903501ND
2020-08-26023903502-IND
2020-09-23026703501ND
2020-11-04030901102-IND
2020-11-04030901101ND
2021-05-13113302202-I1.14 ppb
2021-05-131133022011.20 ppb
2022-07-252206015-01ND
2023-09-2623-58713-IND