What 'Detected,' 'Median' and 'Range' Mean in the Sampling Record on This Page
The U.S. Geological Survey sampled 26 wells in Mobile County’s aquifer 122MOCN during June to August 2011. Manganese was detected in all samples, with concentrations ranging from 1.71 to 372.0 micrograms per liter and a median level of 10.75 micrograms per liter. Detected means manganese was measured in every well sampled—none fell below the measurement limit. Median refers to the middle value of the concentrations when arranged from lowest to highest, providing an average sense of manganese levels across the wells. The range shows the spread between the lowest and highest detected values, reflecting natural variations in groundwater chemistry within this area. None of these measurements exceeded federal health-based thresholds; the record simply documents what manganese levels were present in wells 14 to 68 feet deep.
What Changes for a Large Household, a Second Home, or a Seasonal Property
The experience of metallic taste may depend on household water use volume and patterns. A large household with higher daily water demand might notice taste issues sooner or require greater treatment capacity to maintain satisfactory water quality. For a second home or seasonal property, water stagnation during long absences can concentrate manganese and enhance metallic taste sensations when water is used again. Infrequent water flow can allow manganese to settle or oxidize locally, affecting taste at taps or appliances. Recognizing these dynamics helps in selecting or scaling treatment approaches to match household size and use habits.
How Seasonal or Multi-Year Variation Shows in the Record (Dates and Ranges Given)
This sampling occurred over a narrow summer period in 2011, capturing manganese levels during warmer months when groundwater chemistry may differ from cooler periods. Concentrations varied widely across wells, from very low to moderately high values, indicating spatial and temporal heterogeneity. While no multi-year trend is established from this single dataset, manganese levels can fluctuate seasonally due to changes in aquifer conditions like oxygen availability and water table depth. These fluctuations can influence the intensity of metallic taste complaints over different times of the year.
What Questions a Commercial or Industrial Operator Adds That a Household Does Not
Commercial or industrial water users typically evaluate manganese with consideration for equipment wear, process interference, or product quality impact beyond taste concerns. They may require detailed capacity planning for larger volumes, confirm regulatory compliance, and assess treatment efficacy for a variety of uses—boilers, cooling towers, manufacturing processes—which differ from residential priorities focused mainly on aesthetic water quality and appliance preservation. These users often demand more frequent or comprehensive testing and system performance documentation.
How to Judge Treatment Capacity Against the Household’s or Facility’s Daily Demand
For a household already using water treatment equipment but encountering persistent metallic taste, evaluating treatment capacity relative to daily water consumption is key. Treatment systems must keep pace with peak water use to avoid untreated water reaching taps. Households with fluctuating or increasing use should verify that their units accommodate current and potential future flow rates. Overextending treatment systems can reduce effectiveness against manganese, increasing the likelihood of noticeable metallic taste despite existing equipment.
Which Fixtures, Appliances or Processes Are Affected First and Why
Fixtures used continuously or with low flow, such as kitchen faucets, ice makers, and coffee machines, often reveal metallic taste before other points. Appliances with internal water storage or recirculation can accumulate manganese deposits affecting flavor. Showerheads and laundry equipment might exhibit effects later, partly due to dilution and flow patterns. Identifying where metallic taste appears first can help prioritize treatment locations or additional filtration steps for improved overall water quality experience.
Overall, the manganese levels identified in Mobile County’s aquifer 122MOCN wells show variability but remain below federal health thresholds. Households concerned about metallic taste should test their own water to confirm local manganese concentrations and consider matching treatment capacity to their water demand. The C-Series Metallic-Tasting Water Filter system ships ready to configure and is designed to address manganese-related taste issues effectively. Detailed government data from the U.S. Geological Survey remains the foundation for understanding area water quality context and guiding treatment decisions.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2011-08-11. 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 122MOCN aquifer (Mobile County): 26 results from 26 wells, median 10.75 ug/L, range 1.71-372.0 ug/L; none above any federal threshold