Know Your Environment. Protect Your Health.

Manganese

Harris County Municipal Utility District 23

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.

 

4

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20188.64 ppb1714ND - 51.5 ppb
20197.14 ppb121103ND - 54.6 ppb
20203.30 ppb221.60 ppb - 5.00 ppb
20215.23 ppb14639ND - 69.0 ppb
20227.80 ppb27985ND - 272.0 ppb
20233.15 ppb221.60 ppb - 4.70 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
2020-03-11AF022041.60 ppb
2020-03-11AF022055.00 ppb
2023-01-17AG246144.70 ppb
2023-04-06AG357451.60 ppb