What the Measured Range of Manganese Means Against Federal Standards, and What It Does Not Mean
Between 2011 and 2017, US Geological Survey sampling of four wells in Johnson County's aquifer 111ALVM found manganese at levels ranging from 30.8 to 259.0 micrograms per liter, with a median of 237.5 micrograms per liter. None of these results exceeded any federal manganese thresholds. This means the manganese detections, while present, do not surpass levels designated for health concerns by federal guidelines. However, these findings do not indicate the exact manganese concentration in your home's water supply. Only a specific test of your well or water source can determine that.
How Sample Depth or Well Source Type Influences Expected Manganese Levels
The sampled wells in Johnson County ranged in depth from 17 to 177 feet. Variations in manganese concentration can depend on factors such as well depth and aquifer characteristics. Shallower wells sometimes show different manganese concentrations than deeper ones due to geological and chemical conditions. Since your home's well depth and local source may differ, the area data serves as a general indicator rather than a precise measurement of your water quality for manganese.
Why Aesthetic Secondary Standards Differ from Health-Based Limits for Manganese
Manganese is regulated with both health-based guidelines and secondary standards that address aesthetic factors such as staining or taste. Exceeding an aesthetic secondary standard does not mean the water is unsafe to drink; rather, it may cause issues like black staining on fixtures or an unpleasant metallic taste. Since the Johnson County samples did not exceed federal manganese limits, the detected manganese is not a health threat but could contribute to such aesthetic concerns if present in your water.
How the Documented Treatment Technology Removes or Neutralizes Manganese
The Autotrol Black Manganese Stains Filter uses specialized filtration technology designed to reduce manganese in residential water systems. It functions by trapping manganese particles and preventing the black staining and discoloration that manganese can cause. This system ships ready to configure and can complement existing equipment that may not fully keep up with manganese levels in your water supply, helping protect plumbing and improve water clarity.
The Order to Rule Things Out: From Cheapest Check to Laboratory Test
To understand your manganese concerns accurately, start with a basic visual inspection for black staining or discoloration on fixtures and laundry. Next, review any water quality reports from your local water provider or previous well testing records. Ultimately, a certified laboratory test on your specific water source is essential to measure manganese concentration and confirm treatment needs.
How Manganese Enters Groundwater and Distribution Systems in Johnson County
Manganese naturally occurs in the geology of Johnson County's aquifer 111ALVM. It dissolves into groundwater over time as water interacts with manganese-bearing minerals underground. This process explains the area detections found by the USGS. Manganese generally enters water before it reaches household plumbing, rather than through distribution system contamination.
Do Not Conclude From Area Data Alone That Your Water Matches These Levels
The manganese concentrations found in Johnson County aquifer 111ALVM provide a regional snapshot but do not define the manganese content in your home's water. Individual well conditions, depth, and water use vary widely. Testing your own water is the only way to determine your manganese level and whether treatment such as the Autotrol Black Manganese Stains Filter could benefit your household.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2017-08-28. 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 111ALVM aquifer (Johnson County): 5 results from 4 wells, median 237.5 ug/L, range 30.8-259.0 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.