Samples and Wells Behind the Manganese Data
Number of Wells Sampled and Sampling Period
The U.S. Geological Survey collected manganese data from 11 separate wells in Champaign County's aquifer 112OTSH. These wells were sampled 12 times between July 2011 and October 2020.
Implications of a Small Regional Sample Set
With only a dozen samples, the data provides a general indication of manganese presence in this aquifer but does not represent every household water source. Individual well tests are necessary for precise manganese levels.
Depth and Source Variation Affecting Expected Manganese Levels
Sample Well Depths and Their Role
Sampled wells ranged from 20 to 87 feet deep. Variations in well depth can influence manganese concentration because shallower wells may interact with different minerals compared to deeper sources.
Differences in Aquifer Conditions Across and Within the Area
Manganese levels in groundwater vary naturally by location within the aquifer and over time, influenced by geological and chemical conditions unique to each well site.
Interpreting Certified Lab Reports for Manganese
How Concentrations Are Reported
Laboratory tests typically report manganese concentration in micrograms per liter (ug/L). In Champaign County, the median manganese level found was 25.0 ug/L, with detected amounts ranging from 1.46 to 85.3 ug/L.
Detection vs. Reporting Limits in Results
Out of 12 samples, manganese was detected in 4 results, while 8 results were below the laboratory’s reporting limit. Detection indicates the presence of manganese but does not automatically mean the water has a problem.
Additional Questions Commercial or Industrial Water Users Might Consider
Water System Scale and Usage Differences
Large-scale water users might require more detailed manganese analysis over time due to potential impacts on equipment or processes, but residential needs typically differ in scope.
Regulatory and Operational Considerations
Commercial operators may follow stricter guidelines and monitor manganese for operational efficiency, which are generally outside the scope of household water concerns.
Fixtures, Appliances, and Processes Impacted by Manganese
Where Manganese Effects Show Up First
Manganese can cause discoloration or staining on plumbing fixtures, laundry, and dishes. Appliances using water, such as coffee makers or humidifiers, may show deposits or stains over time.
Why Some Household Points Are More Susceptible
Fixtures with frequent water contact or those made from materials prone to staining often highlight manganese presence earlier than others.
What Not to Conclude from Area Manganese Data Alone
Area Data Is Not a Substitute for Testing Your Own Water
The data from Champaign County’s aquifer 112OTSH provides an overview but does not determine the manganese content in your household’s water source.
Manganese Presence Does Not Equate to Health or Safety Issues
The sampled manganese levels remain below federal thresholds, so detection in the area does not indicate unsafe water. Taste, staining, or appliance effects are the typical concerns related to manganese.
Options for Managing Manganese in Household Water
Addressing manganese issues can involve treatment solutions like the Pentair Black Manganese Stains Filter, which ships ready to configure to reduce manganese’s staining and aesthetic effects in your water.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2020-10-14. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.
On record: U.S. Geological Survey sampling of Manganese in the 112OTSH aquifer (Champaign County): 12 results from 11 wells, median 25.0 ug/L, range 1.46-85.3 ug/L; none above any federal threshold
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