Pentair Black Manganese Stains Filter

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What Laboratory Reports Reveal About Manganese in Coconino County Groundwater

Laboratory results from a set of twenty groundwater samples collected between July 2017 and April 2026 in Coconino County's 310COCN aquifer indicate manganese was detected in all samples. Concentrations varied from 39.0 to 410.0 micrograms per liter (µg/L), with a median of 105.5 µg/L. These samples were drawn from wells ranging between 600 and 1150 feet deep. None of the reported manganese levels exceeded any federal health-based thresholds. It is important to understand that these data reflect area-wide groundwater quality in this aquifer, not the manganese concentration in any individual household water supply. Only a laboratory test of your own well can establish the specific manganese levels you face.

How Manganese Enters Groundwater in This Region

Manganese is a naturally occurring element commonly present in sedimentary rock formations and soil within the Coconino County area. Over long periods, manganese dissolves into groundwater as it moves through manganese-bearing minerals in the aquifer. The variability in concentration observed in sampled wells reflects local geological differences and well depths within the 310COCN aquifer. Seasonal and hydrological factors may also influence manganese levels. When drawn from deep wells, manganese presence can still be significant due to mineral dissolution along the water’s path.

How the Pentair Black Manganese Stains Filter Treats Manganese

This treatment approach uses specialized filtration media designed to remove dissolved manganese from household water. The system operates via processes that oxidize manganese, converting it into particulate form that can be trapped and removed by the filter matrix. The filter ships ready to configure for connection in your water system, enabling reduction of manganese-related discoloration and staining issues often associated with elevated manganese. This technology addresses manganese without the use of chemicals or complex water treatment operations.

Why Aesthetic Secondary Standards Differ from Health-Based Limits for Manganese

Manganese has both health-based limits set by federal authorities and secondary standards focused on aesthetic impacts such as taste, color, and staining. The samples cited fall below any federal health-based thresholds, indicating no health concern from this data set. However, manganese at elevated levels can cause water discoloration, a metallic taste, and black staining on plumbing fixtures and laundry. Secondary standards are designed to manage such nuisance effects but are not health risk indicators. Homeowners concerned about staining or taste may consider treatment even when health-based thresholds are not exceeded.

How Water Source Depth and Well Characteristics Affect Manganese Levels

The sampled wells in this aquifer ranged from 600 to 1150 feet deep, reflecting a substantial interval over which manganese can dissolve into groundwater. Typically, deeper wells may encounter different water chemistry profiles than shallower sources, sometimes with increased manganese concentrations due to prolonged contact with manganese-containing minerals. Variations in well construction, water withdrawal rates, and aquifer characteristics can also influence manganese levels encountered at a household tap. Testing your water provides the definitive concentration in your system.

Additional Questions Relevant to Larger or Seasonal Household Use

Households with large water use demand or seasonal properties may face different considerations regarding manganese treatment. High water volumes may require larger capacity filtration systems to maintain effective manganese removal performance. For seasonal properties, stagnant water can sometimes lead to increased particulate deposition including manganese oxides, necessitating periodic system flushing or maintenance. Understanding your daily and peak water usage helps in selecting a treatment configuration that suits these demands.

When choosing among equipment classes suitable for manganese removal, consider the specific manganese concentration your water test reveals and your household water use patterns. The Pentair Black Manganese Stains Filter is designed to meet such residential needs directly and ships ready to configure.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2026-04-30. 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 310COCN aquifer (Coconino County): 20 results from 3 wells, median 105.5 ug/L, range 39.0-410.0 ug/L; none above any federal threshold