Seasonal and Multi-Year Variation in Gwinnett County Manganese Records
Sampling Dates and Range
Water samples from Gwinnett County’s aquifer 320CRSL were collected over a three-year span from June 10, 2010, to June 18, 2013. This collection covered 17 results from 9 separate wells at depths between 280 and 600 feet.
Observed Concentration Range
Manganese was detected in every sample with concentrations ranging from 0.54 to 215.0 micrograms per liter (ug/L), showing variability but consistent presence. The median concentration was 134.0 ug/L across samples.
Evaluating Treatment Capacity Relative to Household Daily Demand
Match Equipment Capability to Water Usage
When considering equipment, assess your household's average daily water use. Treatment systems should comfortably handle peak daily volumes without performance degradation, ensuring effective manganese removal throughout.
Consider Fluctuations in Water Use
Account for seasonal or temporary changes in demand, such as irrigation or guests, to avoid undersized capacity that may reduce manganese treatment effectiveness.
Sources and Entry Points of Manganese in Local Groundwater
Geological Origins
Manganese in Gwinnett County groundwater originates naturally from the aquifer’s mineral content, filtered through geological formations at considerable depths (280–600 ft).
Distribution System Impact
Unlike surface water or distribution-related contamination, this manganese presence is primarily due to natural aquifer composition, not from pipe materials or system corrosion.
Data to Record Before Seeking Treatment Advice
Water Test Results
Have recent, well-specific manganese concentration results on hand from certified testing to understand your actual water quality, as regional data alone cannot specify your household’s condition.
Water Usage Metrics
Know your daily water consumption in gallons to help select treatment equipment sized properly for demand.
Well Characteristics
Record your well depth and source type to compare with regional sampling depths and anticipate manganese levels accordingly.
Influence of Sample and Well Depth on Expected Manganese Levels
Depth Correlation
Samples taken from 280 to 600 feet show manganese presence, suggesting deeper wells in the aquifer may also contain manganese within this observed regional range.
Variability Within the Aquifer
Even within the same aquifer, manganese concentration can vary, emphasizing the importance of site-specific testing rather than relying solely on regional data.
Conclusion: Treatment Aligned with Your Household Demand
For residential water users in Gwinnett County facing manganese at levels typical of aquifer 320CRSL, systems like the Autotrol Black Manganese Stains Filter ship ready to configure and can be matched to daily water demand for effective manganese reduction. Choosing equipment scaled to your household’s actual use ensures optimal performance and water quality improvement.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2013-06-18. 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 320CRSL aquifer (Gwinnett County): 17 results from 9 wells, median 134.0 ug/L, range 0.54-215.0 ug/L; none above any federal threshold
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