Government sampling by the U.S. Geological Survey found manganese present in all tested samples from Worcester County’s 300CRSL aquifer, with concentrations ranging from 16.2 to 728.0 micrograms per liter (ug/L) and a median value of 133.7 ug/L. These findings come from six results across two wells collected between August and September 2018. None of these samples exceeded federal thresholds for manganese.
What Does 'Detected,' 'Median,' and 'Range' Mean in This Record?
'Detected' means manganese was measured in every sample taken—none fell below the reporting limit. The 'median' concentration, 133.7 ug/L, represents the middle value when all sample results are ordered, providing a typical concentration found in this area. The 'range' (16.2 to 728.0 ug/L) shows the lowest and highest values recorded, indicating variability in manganese levels across sampled wells and times.
What You Should Write Down Before Asking About Treatment
Before seeking advice on manganese treatment, collect any recent water tests specific to your well or tap. Note the date, sampling method, and reported manganese concentration. If available, also record water use patterns, well depth, and any visible or taste-related manganese effects such as staining. These details help tailor treatment approaches accurately.
What a Certified Laboratory Test Reports and How to Read It
A certified lab test for manganese quantifies the concentration in micrograms per liter (ug/L). Interpretation focuses on whether levels are typical for the area or unusually high. Since manganese is not a health-based contaminant at typical concentrations but can affect taste and appearance, lab results guide aesthetic treatment decisions rather than safety concerns.
How Many Samples and Wells Stand Behind These Figures, and What a Small Sample Means
The data for Worcester County’s 300CRSL aquifer represent six measurements from two distinct wells over several weeks in 2018. This limited sampling provides an area snapshot rather than a comprehensive profile of all local wells. Individual wells may vary considerably; thus, personal water testing is essential for precise assessment and treatment decisions.
How Treated Water Can Differ at the Tap Using Documented Technology
The Fleck Black Manganese Stains Filter is designed to reduce manganese concentrations effectively, mitigating common issues like staining or off-colors in water. When configured in a household water system, it filters manganese out to improve water clarity and appearance without impacting health-based water quality. This system ships ready to configure with your home water supply.
While manganese in Worcester County groundwater is commonly detected, its concentration varies, and no federal thresholds were exceeded in sampled wells. Therefore, area data alone should not lead to assumptions about your well’s manganese level or water quality. Only direct testing of your home’s water can accurately identify manganese concentration and inform appropriate treatment options.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2018-09-10. 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 300CRSL aquifer (Worcester County): 6 results from 2 wells, median 133.7 ug/L, range 16.2-728.0 ug/L; none above any federal threshold