Understanding 'Detected,' 'Median,' and 'Range' in Iron Sampling Records for Aquifer 112DFSF
The U.S. Geological Survey sampled groundwater in the FIPS 170 area, aquifer 112DFSF, providing data from two wells between 2011 and 2017. Iron was detected in three out of five samples, showing a median concentration of 1.46 mg/L and a range from 0.45 to 181.0 mg/L. The term 'detected' means the presence of iron was measurable but does not indicate a violation or a problem by itself. The median reflects the middle concentration value, giving a central tendency, while the range shows the spread of concentrations measured in different samples. This area data does not specify the iron level in any individual household well, but it informs about the wider aquifer conditions where your water is drawn.
Additional Questions for Commercial or Industrial Water Users Compared to Households
Households often focus mainly on aesthetic and operational impacts of iron bacteria, such as staining and slime buildup in plumbing fixtures. Commercial or industrial users must examine these factors plus assess iron’s potential interference in processes, equipment fouling, and compliance with industry-specific water quality standards. They may need to evaluate continuous iron concentrations, iron bacteria growth rates, and treatment system throughput capacity. Households do not usually need these detailed operational parameters but benefit from clear knowledge of iron occurrence and consistent treatment effectiveness.
Key Information to Record Before Seeking Advice on Iron Bacteria Treatment
Before exploring solutions, note the following about your water supply and usage:
- Water source type (private well, municipal supply drawing from the aquifer)
- Existing equipment setup and any recurrent issues like staining or slime formation despite current treatment
- Daily household water consumption to estimate demand
- Results from your own water test focusing on iron concentration and presence of iron bacteria
- Any specific household water quality observations (taste, color, sediment)
Documenting this information helps clarify what challenges persist and guides appropriate product selection for your conditions.
Interpreting the Measured Iron Range Against Federal Secondary Standards and What This Means for Homeowners
The federal secondary standard for iron in drinking water is 0.3 mg/L, a guideline related to taste, staining, and plumbing effects, not health risks. In aquifer 112DFSF samples, two results exceeded this threshold, indicating potential aesthetic concerns in some wells but no safety violation. Homeowners experiencing slime or staining may see these effects when local iron concentrations surpass this aesthetic level. These data clarify that iron presence varies widely in this region and that individual well testing is essential to know your home’s iron level accurately.
Balancing Treatment Capacity with Household Daily Water Demands
When existing equipment cannot keep up with iron bacteria issues, it is important to consider if the treatment system can handle your household's specific daily water use volumes. Treatment devices designed for iron bacteria removal must have capacity aligned with your water flow and iron concentration levels to maintain effectiveness. Assessing both the iron load and how much water your household uses daily supports choosing a system that meets your needs reliably without being undersized or excessive.
Choosing a treatment solution like the Fleck Iron Bacteria & Slime Filter offers a documented approach to manage iron bacteria challenges in homes by addressing slime and staining concerns documented in regional sampling. It ships ready to configure for adapting to your setup.
In summary, regional groundwater sampling shows variable iron levels in Connecticut’s aquifer 112DFSF, with some measurements above aesthetic standards. Understanding these data, documenting your household water use and test results, and selecting treatment matched to your demand are key steps to resolving iron bacteria problems when current equipment falls short.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2017-09-06. 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 170): 5 results from 2 wells, median 1.46 mg/L, range 0.45-181.0 mg/L; 2 above an AESTHETIC secondary standard only (secondary standard 0.3 mg/L (aesthetic)) - not a health finding
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