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What does an arsenic laboratory test report actually list for Warren County's aquifer 112OTSH?

When a laboratory analyzes water for arsenic, the report shows the concentration measured in micrograms per liter (µg/L). For the Warren County area, aquifer 112OTSH, data from the U.S. Geological Survey includes four sampling results from three wells taken between July 2011 and November 2020. These results showed arsenic detected in three samples, with concentrations ranging from 0.13 to 0.24 µg/L, and one sample was below the reporting limit. These figures reflect measurements from wells 29 to 52 feet deep. Importantly, no recorded sample exceeded federal arsenic thresholds, meaning the area’s groundwater arsenic levels fall within regulatory guidelines.

How do seasonal or multi-year variations show in the arsenic sampling record?

The data spans nearly a decade, from mid-2011 to late 2020, indicating that arsenic concentrations in aquifer 112OTSH remain consistently low over time. Sampling across different years did not reveal sudden spikes or significant fluctuations beyond the reported range of 0.13 to 0.24 µg/L. This suggests that, while natural variations can occur, the arsenic levels in this aquifer have been relatively stable, without seasonal peaks or alarming upward trends documented in the public record.

How do sample depth and well depth affect what a homeowner should expect about arsenic in their water?

The samples referenced come from wells between 29 and 52 feet deep, a moderate depth typical for many residential settings. Arsenic concentrations can vary with well depth; generally, different geological layers may contain varying arsenic levels. Therefore, while these regional results provide a useful frame of reference, individual well water could differ depending on its exact depth and local conditions. Homeowners should obtain specific testing for their water source to determine personal arsenic levels accurately.

How should one compare Warren County's arsenic data with that of neighboring counties without overinterpreting the differences?

Comparing arsenic data across counties may show different median and range values, reflecting variations in geochemistry and sampling methods. However, each area’s data represents a general pattern rather than precise predictions for any individual well. Without direct testing of your own water, assumptions based on neighboring county data risk inaccurate conclusions. Use such comparisons only as a broad context, but rely on your own well’s laboratory results to guide decisions about water safety and treatment needs.

What information should a homeowner note before seeking guidance on arsenic water treatment?

Before exploring treatment options, record the following:

• The exact arsenic concentration found in your water from a certified laboratory test.
• The depth and type of your well or water source.
• Any recent changes in taste, appearance, or appliance performance related to water quality.
• The effectiveness and condition of your previous treatment equipment.

This information will clarify your water’s current state and support selecting a suitable solution, such as a Fleck Arsenic Filter, which ships ready to configure for residential use and is designed to address arsenic effectively.

What should a homeowner not conclude solely from Warren County area arsenic data?

Area-based arsenic data do not establish the safety or arsenic concentration of your individual well water. Detection of arsenic in regional samples is a measurement, not an automatic indication of contamination or health risk. Likewise, low levels in the aquifer region do not guarantee your well water is free from arsenic. Testing your own water with a qualified laboratory remains essential for identifying any arsenic concern. Also, previous treatment failure does not mean no effective option exists; products like the Fleck Arsenic Filter provide a documented means to reduce arsenic when needed.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2020-11-02. 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 112OTSH aquifer (Warren County): 4 results from 3 wells, median 0.17 ug/L, range 0.13-0.24 ug/L; none above any federal threshold