Know Your Environment. Protect Your Health.

Manganese

City of Stamford

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201816.0 ppb1116.0 ppb
20191.90 ppb111.90 ppb
20201.30 ppb111.30 ppb
20211.50 ppb111.50 ppb
20221.10 ppb111.10 ppb
20236.00 ppb221.70 ppb - 10.3 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
2018-03-21Q181187600116.0 ppb
2019-03-05Q19092050011.90 ppb
2020-03-10Q20095520041.30 ppb
2021-03-09Q21060610021.50 ppb
2022-03-03Q22074760021.10 ppb
2023-03-14Q23100460031.70 ppb
2023-08-23222540410.3 ppb