Know Your Environment. Protect Your Health.

Manganese

Gonzales County Water Supply Corporation

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.

 

54

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201819.5 ppb229.60 ppb - 29.3 ppb
20193.68 ppb43ND - 8.50 ppb
20206.75 ppb4212ND - 46.3 ppb
202128.3 ppb1128.3 ppb
20222.00 ppb32ND - 4.30 ppb
20231.75 ppb21ND - 3.50 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
2018-02-08AE1293729.3 ppb
2018-12-12AE486119.60 ppb
2019-01-09AE491818.50 ppb
2019-01-09AE491823.60 ppb
2019-01-09AE49183ND
2019-03-05AE570862.60 ppb
2020-01-21AE942526.60 ppb
2020-03-0420C1297-04ND
2020-03-0420C1297-10ND
2020-03-0420C1297-09ND
2020-03-0420C1297-0832.2 ppb
2020-03-0420C1297-0726.7 ppb
2020-03-0420C1297-06ND
2020-03-0420C1297-0540.6 ppb
2020-03-0420C1297-03ND
2020-03-0420C1297-02ND
2020-03-0420C1297-01ND
2020-03-10AF019482.20 ppb
2020-06-02Q2021789010ND
2020-06-02Q2021789009ND
2020-06-02Q202178900828.2 ppb
2020-06-02Q2021789007ND
2020-06-02Q202178900612.1 ppb
2020-06-02Q2021789004ND
2020-06-02Q2021789003ND
2020-06-02Q2021789002ND
2020-06-02Q2021789001ND
2020-06-02Q2021789005ND
2020-08-18Q203296900621.8 ppb
2020-08-18Q2032969010ND
2020-08-18Q2032969009ND
2020-08-18Q203296900829.2 ppb
2020-08-18Q2032969007ND
2020-08-18Q2032969005ND
2020-08-18Q2032969004ND
2020-08-18Q2032969003ND
2020-08-18Q2032969002ND
2020-08-18Q2032969001ND
2020-12-07Q2048651001ND
2020-12-07Q2048651010ND
2020-12-07Q2048651009ND
2020-12-07Q204865100826.1 ppb
2020-12-07Q2048651007ND
2020-12-07Q204865100646.3 ppb
2020-12-07Q2048651005ND
2020-12-07Q2048651004ND
2020-12-07Q2048651003ND
2020-12-07Q204865100211.4 ppb
2021-01-13AF3904028.3 ppb
2022-02-09AF839241.70 ppb
2022-04-20AF938214.30 ppb
2022-09-30AG15629ND
2023-03-15AG33164ND
2023-03-29AG347453.50 ppb