In Douglas County, Nebraska, the U.S. Geological Survey collected 100 manganese samples from 24 groundwater wells located within aquifer 112SDGVD between August 2010 and June 2025. Every sample detected manganese, with concentrations ranging from 0.25 to 2,450 micrograms per liter (µg/L) and a median of 354.5 µg/L. Importantly, none of these samples exceeded any federal health-based thresholds, indicating no recorded manganese violations in the area aquifer.
If you want to reduce manganese from your household water, how the documented treatment technology works
The Autotrol Black Manganese Stains Filter addresses manganese by filtering out manganese particles from water before it reaches your taps. Its specialized system targets manganese compounds that commonly cause staining and aesthetic issues, effectively reducing visible discoloration and deposits on fixtures and laundry. This technology works through a filter medium designed to trap manganese, allowing your household water to improve in appearance and quality without chemical additives.
If you consider the seasonal and multi-year variation observed in manganese levels in Douglas County
The sampling period from 2010 to 2025 shows that manganese concentrations in the local aquifer can vary widely, from low single digits up to thousands of micrograms per liter. These fluctuations reflect natural changes in groundwater chemistry influenced by seasonal recharge, water table shifts, and possibly changes in land use. Therefore, the manganese level in your water may change over time, emphasizing the importance of periodic testing rather than relying solely on historical data.
If you want to understand how sample depth, well depth, or source type affects manganese expectations
The wells sampled ranged in depth from 22 to 246 feet. Manganese levels can vary at different depths within the aquifer because manganese concentration often depends on geochemical conditions such as redox potential and organic matter at specific depths. Shallow and deep wells may display different manganese levels even within the same area. This means that your household water's manganese concentration can differ from area data depending on your well’s depth and construction.
If you are examining the role of plumbing materials and age separate from manganese source water
While your source water may contain manganese, plumbing components can influence how manganese appears in household water. Older pipes or fixtures with mineral buildup can react with manganese, sometimes causing staining or accelerated deposits inside your plumbing system. However, plumbing does not create manganese; it only interacts with what is present in your water. Addressing manganese at the source combined with appropriate plumbing maintenance can improve overall water quality.
If you wish to understand why aesthetic secondary standards differ from health-based limits for manganese
Manganese is regulated differently for aesthetic considerations such as taste, staining, or discoloration rather than for direct health risks at typical concentrations found in Douglas County. The manganese range found in area samples does not surpass federal health limits, but levels above aesthetic secondary standards can cause visible stains and affect water’s appearance or taste. This distinction is important: exceeding an aesthetic benchmark is not a health violation but can still impact user experience.
If you want to know how public-system records differ from private-well testing for manganese
Public water system data, like the U.S. Geological Survey’s sampling, offers a broad overview of manganese in Douglas County aquifers. However, your private well’s manganese concentration may differ significantly due to localized geology and well characteristics. Only direct analysis of your own water sample can confirm your manganese level. Public records serve as a helpful reference, but private well testing is essential for an accurate household water profile.
To definitively determine the manganese concentration in your household water, order a comprehensive water test that includes manganese measurement. A quantitative result will clarify if manganese levels in your water warrant treatment. If you find manganese is causing staining or aesthetic problems, the Autotrol Black Manganese Stains Filter ships ready to configure for residential use, equipped to reduce manganese effectively and improve your household water’s appearance.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-06-13. 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 112SDGVD aquifer (Douglas County): 100 results from 24 wells, median 354.5 ug/L, range 0.25-2450.0 ug/L; none above any federal threshold
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.