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What Manganese in Water Means for Miami-Dade County Residents

Many homeowners notice changes in their water and wonder if manganese could be involved. Manganese is a naturally occurring element found in groundwater, including in Miami-Dade County’s aquifer 112BSCNN. Understanding manganese levels in this aquifer can help residents recognize potential effects on their home water systems and determine when further testing is advisable.

Government Sampling Data on Manganese

The U.S. Geological Survey has gathered extensive groundwater samples from 61 wells in Miami-Dade County’s 112BSCNN aquifer over a period from March 2010 through March 2023. These wells, ranging from 14 to 273 feet deep, provide a broad view of manganese concentrations in the area.

• Manganese was detected in 103 out of 109 samples, with six below the reporting limit.
• The median manganese concentration was 5.32 micrograms per liter (µg/L).
• The range of manganese found extended from 0.27 µg/L to 96.7 µg/L.

Importantly, none of these samples exceeded any federal health-based thresholds, indicating that manganese levels measured do not represent a regulatory exceedance or safety violation in the region's groundwater.

What This Means for Your Household Water

While the regional data provides useful context, it cannot determine the exact manganese level in your own household water. Local conditions—such as your well depth, proximity to certain geological formations, and well maintenance—affect individual water quality. Therefore, testing your household well or municipal supply is necessary to understand manganese’s presence specifically in your water.

Manganese in water can contribute to noticeable effects such as a metallic or bitter taste, staining of plumbing fixtures or laundry, and discoloration. These are aesthetic and operational issues rather than health safety concerns when manganese is below federal limits.

Testing and Addressing Manganese at Home

To address manganese, first confirm its concentration and form through water testing. Tests should include total manganese concentration and information on whether manganese is dissolved or particulate, as this influences treatment options.

Once confirmed, a commonly recommended approach for manganese treatment in residential settings is air injection filtration designed to oxidize manganese, converting it into a solid form that can be filtered out. The WSP Whole House Iron & Sulfur Filter - All-In-One, 24x72" tank, uses AIR_INJECTION_IRON technology to target manganese and related metals in a single system that ships ready to configure for your water line.

• This technology improves water clarity and taste by removing manganese effectively.
• It reduces staining on fixtures and laundry caused by manganese deposits.
• A single unit handles manganese as well as iron and sulfur, helping manage multiple water quality concerns.

The system operates through a process where air oxidizes manganese compounds in water, which are then trapped by a filter medium inside the tank. It is designed for continuous use in residential water supplies and does not require external additions during operation.

Summary

Miami-Dade County’s aquifer 112BSCNN shows manganese is commonly present at levels below federal health thresholds, but noticeable manganese effects can occur in home water. Homeowners should test their own water to determine manganese concentration and its form, which guides treatment decisions. The WSP Whole House Iron & Sulfur Filter offers an air injection solution to manage manganese and improve water quality for residential use.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2023-03-23. 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 112BSCNN aquifer (Miami-Dade County): 109 results from 61 wells, median 5.32 ug/L, range 0.27-96.7 ug/L; none above any federal threshold

The documented solution

WSP Whole House Iron & Sulfur Filter - All-In-One, 24x72"