Pentair Arsenic Filter

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Government groundwater sampling in Gallatin County, Illinois, targeting aquifer 110QRNR, detected arsenic consistently across tested wells. Between June 2015 and August 2019, arsenic was found in every sample from eight wells, with concentrations ranging from 1.2 to 38.7 micrograms per liter (ug/L) and a median of 7.35 ug/L. None of these results exceeded federal arsenic thresholds. This data reflects area-wide conditions for wells 60 to 135 feet deep, not the arsenic levels in any individual household’s water.

How Arsenic Enters Groundwater in Gallatin County’s Aquifer

Arsenic naturally occurs in certain soils and rock formations within the 110QRNR aquifer region. Groundwater can dissolve arsenic from these geologic sources, leading to detectable levels in wells. Human activities such as agriculture or industrial processes may also influence arsenic concentrations, but the primary source in this area is geologic. Understanding this helps to contextualize the arsenic presence found in government sampling.

If Comparing Gallatin County to Nearby Counties, Do Not Assume Identical Arsenic Levels

While adjacent counties may share similar geologic features, arsenic levels in groundwater can vary significantly due to local geology and well depths. The range reported here—1.2 to 38.7 ug/L—applies specifically to Gallatin County’s aquifer 110QRNR. Data from neighboring regions might show lower or higher measures, but direct extrapolation to your household’s well water is not reliable without testing.

How Seasonal and Multi-Year Variations Appear in Gallatin County’s Arsenic Records

The measurements were collected during summer months over four years, showing that arsenic concentrations remained consistently detectable but fluctuated within the documented range. This suggests some natural variation, possibly influenced by water table levels or other environmental factors, but no abrupt spikes beyond federal guidelines have been recorded in this aquifer.

Understanding Your Certified Laboratory Test Report for Arsenic

A laboratory test specific to your household water is required to know your actual arsenic level. Such reports typically show numeric concentration in micrograms per liter, with detection limits indicating the lowest level the lab can reliably measure. Knowing these details aids in comparing your results against regional data and deciding on treatment needs.

What Does 'Detected', 'Median', and 'Range' Mean in This Sampling Record?

• Detected: Arsenic was measurable in all samples at or above the lab’s reporting threshold.
• Median: The middle value of the arsenic concentrations recorded was 7.35 ug/L, indicating typical levels in the sampled wells.
• Range: The lowest measured concentration was 1.2 ug/L and the highest was 38.7 ug/L, showing variation across wells and times.

These terms describe the regional monitoring data and do not indicate the safety or violation status of your water supply.

Should your household water testing indicate arsenic levels that warrant treatment, the Pentair Arsenic Filter system provides a documented solution. It ships ready to configure and uses technology designed to reduce arsenic levels effectively, helping to meet your water quality goals based on actual testing results.

This discussion restates that the groundwater data described here pertains to multiple wells sampled in Gallatin County’s aquifer 110QRNR within the stated period. For detailed information or updates, consult the U.S. Geological Survey groundwater data directly.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2019-08-08. 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 Arsenic in the 110QRNR aquifer (Gallatin County): 10 results from 8 wells, median 7.35 ug/L, range 1.2-38.7 ug/L; none above any federal threshold