Household Considerations for 1,4-Dioxane in AS Water: Federal Sampling Insights
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WSP Whole House 1,4-Dioxane Reduction System
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Interpreting Detection, Median, and Range in Federal Sampling Records
Detection Explained
In the EPA UCMR3 monitoring for Central ASG system, 'detected' means 1,4-Dioxane was measured above the method reporting level of 0.07 micrograms per liter (µg/L) in any tested sample. For this system, no detections exceeded that level during 2014-2015 sampling.
Median and Range Defined
Median represents the middle concentration value when all measurements are arrayed from lowest to highest, helping to understand typical levels. Range shows the lowest to highest values measured. Here, with no detections above 0.07 µg/L, the median and range suggest 1,4-Dioxane presence was below this detection threshold in all samples.
Household Symptoms Relevant and Irrelevant to 1,4-Dioxane
Symptoms Not Related to 1,4-Dioxane
Typical water discoloration, taste changes, or odors are not associated with 1,4-Dioxane, as it is a colorless, odorless chemical. Therefore, these sensory issues indicate other water constituents.
Absence of Direct Symptoms
There are no immediate or obvious physical symptoms in water use that would confirm 1,4-Dioxane presence or concentration, so reliance on testing is necessary.
Consideration of Seasonal and Multi-Year Variations
Sampling Dates and Period
The EPA data covers August 2014 through February 2015, capturing late summer to winter variations to some extent but not a full multi-year cycle.
Seasonal Fluctuation Insights
Within this period, no detection above 0.07 µg/L was recorded. This suggests stable low levels or absence during these months, though longer-term trends remain unmeasured.
Sample Size and Its Implications
Number of Samples and Connections
Sixty-six samples from the Central ASG public water system, serving many connections within the county, support the reported figures.
Interpretation of Sample Scope
While this provides a solid overview of the system’s water quality, individual household testing is necessary to determine specific well or tap water characteristics.
Effect of Fleck 1,4-Dioxane Filter on Treated Household Water
Treatment Outcome
Fleck 1,4-Dioxane Filter technology is designed to reduce this chemical in water, improving water quality where 1,4-Dioxane is a concern. Once configured, it significantly decreases 1,4-Dioxane concentration at the tap.
Technology Highlights
This system ships ready to configure and uses proven methods to address 1,4-Dioxane, helping households manage this constituent effectively.
Understanding Certified Laboratory Test Reports for 1,4-Dioxane
What the Report Shows
A certified laboratory test report lists 1,4-Dioxane concentration in micrograms per liter. Values below the detection limit (0.07 µg/L in EPA tests) are typically reported as non-detect.
How to Read the Results
Reports allow a household to verify their specific water conditions rather than rely solely on system-wide data. Concentrations at or above the EPA cancer risk reference concentration (0.35 µg/L) may warrant treatment consideration.
The EPA public water system record covers the broad service area for Central ASG system in AS, not individual household water. All data is from federal monitoring conducted between 2014 and 2015, publicly available from EPA's UCMR3 records.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-02-27. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Central ASG (AS9711948), AS: 66 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level