Know Your Environment. Protect Your Health.

Manganese

Harris County MUD 422

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.

 

8

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
2019ND20ND
20207.41 ppb1512ND - 66.5 ppb
20215.23 ppb14639ND - 69.0 ppb
20227.80 ppb27985ND - 272.0 ppb
202314.1 ppb64ND - 23.5 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
2019-02-2819B2079-01ND
2019-02-2819B2079-02ND
2023-09-18C3I4160-0123.5 ppb
2023-09-18C3I4160-02ND
2023-09-18C3I4160-0319.9 ppb
2023-10-31C3J7640-0122.2 ppb
2023-10-31C3J7640-02ND
2023-10-31C3J7640-0318.9 ppb