Know Your Environment. Protect Your Health.

Manganese

Northwest Harris County Municipal Utility District 21

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.

 

5

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20192.70 ppb112.70 ppb
20205.10 ppb115.10 ppb
202114.0 ppb1114.0 ppb
202237.6 ppb1137.6 ppb
202310.9 ppb1110.9 ppb

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
2019-06-17AE707952.70 ppb
2020-03-24AF042695.10 ppb
2021-03-09AF4591414.0 ppb
2022-02-03AF8314237.6 ppb
2023-01-12AG2432010.9 ppb