Tested Water

Manganese in Utah well water, by county

Manganese is widespread, over the limit in 15% or more of tested wells, in 5 of the 23 Utah counties with 10 or more tested wells. 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 Utah compares with the rest of the country

Across Utah, about 1 in 9 tested wells had manganese over the EPA health advisory of 0.3 mg/L (153 of 1,381). Across all tested wells in the US it's about 1 in 7. Utah is about average, so the county you live in tells you more than the state does.

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
Davis County 59
47% 28 of 59
Widespread
San Juan County 70
34% 24 of 70
Widespread
Uintah County 45
33% 15 of 45
Widespread
Emery County 13
23% 3 of 13
Widespread
Salt Lake County 226
19% 42 of 226
Widespread
Beaver County 61
10% 6 of 61
Worth checking
Kane County 12
8% 1 of 12
Worth checking
Millard County 98
7% 7 of 98
Worth checking
Juab County 28
7% 2 of 28
Worth checking
Iron County 107
7% 7 of 107
Worth checking
Summit County 37
5%* 2 of 37
Worth checking
Cache County 20
5% 1 of 20
Worth checking
Wasatch County 23
4% 1 of 23
Rare
Washington County 72
4% 3 of 72
Rare
Tooele County 163
4% 6 of 163
Rare
Utah County 88
3% 3 of 88
Rare
Box Elder County 47
2% 1 of 47
Rare
Grand County 62
0% 0 of 62
Rare
Morgan County 51
0% 0 of 51
Rare
Duchesne County 24
0% 0 of 24
Rare
Sanpete County 24
0% 0 of 24
Rare
Sevier County 12
0% 0 of 12
Rare
Wayne County 11
0% 0 of 11
Rare

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

  • Summit County: Almost all of these tests come from the US Geological Survey between 2000 and 2004 in one small part of the county, so this likely overstates it.

5 more Utah 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 Utah

1

Your county health department

Utah 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.

Utah's private well page
2

A lab Utah certifies

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

Labs certified by Utah
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 Utah

Questions people ask about manganese in Utah

Is there manganese in Utah well water?

Manganese is widespread, over the limit in 15% or more of tested wells, in 5 of the 23 Utah counties with 10 or more tested wells. Across Utah, about 1 in 9 tested wells had manganese over the EPA health advisory of 0.3 mg/L (153 of 1,381). Across all tested wells in the US it's about 1 in 7. Utah is about average, so the county you live in tells you more than the state does.

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

Use a lab certified by Utah 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 Utah'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: Department of Health and Human Services (Utah Public Health Laboratory) and local health departments.