Tested Water

Manganese in Georgia well water, by county

Manganese has turned up often in 1 of the 12 Georgia counties with 10 or more tested wells, but those results likely overstate it, because of who tested the wells, when or where. A county's share tells you how likely a problem is nearby. Only a test of your own well tells you what's in it.

How Georgia compares with the rest of the country

Across Georgia, about 1 in 33 tested wells had manganese over the EPA health advisory of 0.3 mg/L (14 of 460). Across all tested wells in the US it's about 1 in 7. That's less often than in the country as a whole. Counties still differ, so check yours below.

Why it matters: High levels over many years may affect the nervous system, and babies are more sensitive to it. It also leaves black stains.

Manganese dissolves out of rock and soil, especially in water with little oxygen.

Manganese in tested wells, county by county

Share of each county's tested wells with at least one result over the EPA health advisory of 0.3 mg/L. Counties need 10 or more tested wells to be listed. Widespread means 15% or more, worth checking 5 to 15%, rare under 5%.

CountyWells testedWells over the limitLevel
Cobb County 23
43%* 10 of 23
Widespread
Camden County 13
8% 1 of 13
Worth checking
Dougherty County 30
0% 0 of 30
Rare
Decatur County 24
0% 0 of 24
Rare
Glynn County 24
0% 0 of 24
Rare
Richmond County 21
0% 0 of 21
Rare
Sumter County 21
0% 0 of 21
Rare
Turner County 13
0% 0 of 13
Rare
Tift County 12
0% 0 of 12
Rare
Gwinnett County 11
0% 0 of 11
Rare
Worth County 11
0% 0 of 11
Rare
Chatham County 10
0% 0 of 10
Rare

* Likely overstated. These shares come from a narrow set of wells, so they probably run high for the county as a whole:

  • Cobb County: All of these tests come from the US Geological Survey between 2002 and 2006 in one small part of the county, so this likely overstates it.

98 more Georgia counties have 1 to 9 tested wells for manganese, too few to rate.

Download this table (CSV) ยท Free to reuse under CC BY 4.0

Where to get your well tested for manganese in Georgia

1

Your county health department

Georgia doesn't run a statewide free testing program that we know of. Some county health departments test wells or sell kits, so call yours first.

Georgia's private well page
2

A lab Georgia certifies

Ask for manganese by name. Results from a certified lab count for a home sale or a loan.

Labs certified by Georgia
3

A mail-in kit

Fill the bottles at your kitchen tap and mail them back. We mark the kits that include manganese.

Compare kits

Keep reading about wells in Georgia

Questions people ask about manganese in Georgia

Is there manganese in Georgia well water?

Manganese has turned up often in 1 of the 12 Georgia counties with 10 or more tested wells, but those results likely overstate it, because of who tested the wells, when or where. Across Georgia, about 1 in 33 tested wells had manganese over the EPA health advisory of 0.3 mg/L (14 of 460). Across all tested wells in the US it's about 1 in 7. That's less often than in the country as a whole. Counties still differ, so check yours below.

Where can I get my well tested for manganese in Georgia?

Use a lab certified by Georgia for drinking water, or a mail-in kit that includes manganese from a certified lab. Some county health departments test wells too, so call yours first.

See Georgia's list of certified labs, or compare mail-in kits.

Where these numbers come from

  • Lab tests: Water Quality Portal (USGS and EPA), well samples since 2000. A well counts as over if any of its tests was over the EPA health advisory of 0.3 mg/L. Wells tested for studies and monitoring, not a random sample of homes.
  • Likely overstated: our own check of who tested the wells, when and where. How we check.
  • State programs and links: University of Georgia Cooperative Extension (labs certified by Environmental Protection Division).