Sources of Iron in Groundwater of Connecticut's FIPS 160 Aquifer
Iron found in groundwater in this area commonly originates from natural geological formations where iron-bearing minerals dissolve into aquifers over time. The aquifer 112DFSF supplying parts of FIPS 160 experiences these natural leaching processes contributing to measured iron presence. This dissolution is influenced by factors such as pH, oxygen availability, and aquifer composition rather than contamination events.
Extent and Sampling of Wells Underlying Iron Data
The iron data presented here comes from six samples collected from three wells ranging in depth from 13 to 273 feet between 2011 and 2017. While this provides an initial regional indication, the limited number of wells means the data may not capture the full variability within the entire aquifer. Individual well conditions may differ and require specific testing for accurate characterization.
Understanding Secondary Aesthetic Standards Versus Health-Based Limits
Iron in water is governed by secondary standards concerned chiefly with taste, staining, and appearance rather than health safety. None of the samples from these wells exceeded federal health-based limits. This distinction clarifies that detection and the range of iron found here do not imply health risk but rather aesthetic issues such as rust stains or metallic taste.
Influence of Plumbing Materials and Home Age on Iron Effects
Household plumbing can impact the manifestation of iron and rust beyond source water levels. Older pipes or certain metals may exacerbate staining or discoloration through interaction with iron. This means that even if well water iron is moderate, home plumbing characteristics can intensify visible signs and influence treatment needs.
Interpreting Certified Laboratory Test Reports for Iron
A certified lab test for household water typically reports iron concentration in micrograms per liter (µg/L) or milligrams per liter (mg/L). Results may include terms like 'detected' when iron is measured above reporting limits, a 'median' value indicating a central tendency among samples, and a 'range' describing the lowest and highest concentrations found. Understanding these terms helps in evaluating water quality reports without misconstruing detection as a violation.
Meaning of Detected, Median, and Range in the Government Sampling Record
In this sampling, iron was detected in five out of six results with a median value of 7.4 µg/L and a range from 0.136 to 11.4 µg/L. 'Detected' means iron was measurable; 'median' reflects the middle value of all samples, and the 'range' shows variation between lowest and highest concentrations. None of these measurements were above federal health-based limits, confirming iron presence but not indicating noncompliance or safety concern.
The iron and rust data summarized here represents regional results for groundwater within the FIPS 160 aquifer 112DFSF in Connecticut, based on U.S. Geological Survey monitoring. For precise water management in your home, individual water quality testing is essential. To address iron and rust, the Pentair Orange Iron & Rust Stains Filter ships ready to configure and offers a solution documented for these conditions as encountered in similar residential applications.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2017-09-08. 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 112DFSF aquifer (FIPS 160): 6 results from 3 wells, median 7.4 ug/L, range 0.136-11.4 ug/L; none above any federal threshold
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