How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means
The iron bacteria data for Suffolk County’s aquifer 211MAGT are drawn from U.S. Geological Survey groundwater sampling. This dataset includes 33 iron concentration results from 29 separate wells, collected over a thirteen-year span from June 2012 through September 2025. These wells range between 200 and 900 feet deep, providing a meaningful look at iron presence across a range of groundwater depths in this area. While 29 wells may seem limited, it offers a substantial basis for observing regional iron trends, though it cannot confirm conditions in any single household well.
How to Compare This Area's Record with a Neighbouring County's Without Overreading It
When comparing Suffolk County’s iron data to nearby regions, it is important to remember that differences in aquifer composition, well depths, and local geology can cause variation in iron levels. This record reflects only the wells sampled within Suffolk County aquifer 211MAGT and should not be used to assume conditions in adjacent counties. Similarly, a detection or variation in iron concentrations regionally does not predict the exact water quality at any residence. Decisions should focus on local test results rather than broad area comparisons alone.
How the Documented Treatment Technology Removes or Neutralises the Constituent
Iron bacteria contribute to staining, slime buildup, and potentially reduced efficiency of household water equipment, particularly when existing treatment struggles to keep up. The C-Series Iron Bacteria & Slime Filter is designed to reduce iron bacteria and associated slime by using filtration technology that targets the biological and particulate forms of iron that standard equipment may miss. It ships ready to configure for residential plumbing systems, providing a specialized approach to managing iron bacteria without relying solely on traditional methods.
How the Constituent Enters Groundwater or the Distribution System in This Region
In Suffolk County, iron naturally occurs in the aquifer beneath the surface. The iron measured in groundwater primarily originates from the dissolution of iron-bearing minerals in the soil and rock surrounding the aquifer 211MAGT. Iron bacteria thrive on this dissolved iron as a nutrient source, leading to slime formation and biofilm growth inside well casings and plumbing. These processes happen underground and can carry iron bacteria into residential water systems, resulting in buildup beyond what typical treatment handles efficiently.
A Worked Example: Reading the Record's Median and Range as a Homeowner Would
The median iron concentration across sampled wells in Suffolk’s aquifer 211MAGT is 207 micrograms per liter (µg/L), with reported values ranging from 6.4 up to 25,400 µg/L. Of the 33 samples, iron was detected in 20 results and below the reporting limit in 13. This wide range indicates variability in local conditions rather than a single uniform level. A homeowner seeing this range should understand that their well’s iron concentration could fall anywhere within it, underscoring the need for individual water testing to determine the best treatment options.
Why Aesthetic Secondary Standards Differ from Health-Based Limits, Applied to This Constituent
Federal secondary standards for iron address factors like taste, staining, and corrosion, which impact household comfort and plumbing longevity but do not represent health risks. No sampled result in this dataset exceeded federal secondary standards, meaning the iron concentrations detected in the area are not considered unsafe from a health perspective. However, even iron levels below these aesthetic thresholds can still promote iron bacteria growth, which may degrade water quality in other ways important to homeowners.
Closing: The Single Test Homeowners Should Order and What Result Would Settle the Question
To address iron bacteria concerns effectively, the essential step is a certified laboratory analysis of your own well water that quantifies iron concentration specifically. Knowing your well’s iron levels and the presence of iron bacteria allows for targeted treatment decisions. A test result showing elevated iron or bacterial slime signals the need for more advanced filtration solutions like the C-Series Iron Bacteria & Slime Filter, while lower results might confirm adequacy of existing equipment.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-09-17. 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 Iron in the 211MAGT aquifer (Suffolk County): 33 results from 29 wells, median 207.0 ug/L, range 6.4-25400.0 ug/L; none above any federal threshold