Fleck 1,4-Dioxane Filter

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What a Laboratory Test Report Indicates About 1,4-Dioxane in Your Water

When a water test report includes 1,4-dioxane, it lists measured concentrations usually in micrograms per liter (µg/L). These results indicate only what was detected in the sampled water and do not alone determine if water is safe or unsafe. For the public water system serving much of New Haven County, including Berlin, Cheshire, Meriden, Southington, and Wallingford, the EPA’s Unregulated Contaminant Monitoring Rule (UCMR3) results from 2013 to 2015 show occasional detections of 1,4-dioxane. Measurements ranged up to 0.62 µg/L with a median among detections of 0.49 µg/L. These detections reflect measurements made at the system level, not at individual taps.

How Public-System Records Differ from Private Well Testing

Public system data like that from the Meriden Water Division represents water quality in the distribution system serving tens of thousands of residents. These results come from surface water sources and multiple sampling points, providing a broad view of the water entering and circulating within the system. In contrast, private wells vary greatly by depth, geology, and local conditions. A private well’s 1,4-dioxane level can only be known from an individual test, as system data does not reflect a private well’s conditions or plumbing.

How the Fleck System Addresses 1,4-Dioxane in Household Water

To reduce 1,4-dioxane in household water, specialized treatment equipment designed for this contaminant is necessary. The Fleck 1,4-Dioxane Filter utilizes advanced filtration technology that targets and reduces 1,4-dioxane concentrations effectively. This system typically ships ready to configure for home water treatment, supporting demand-level needs with equipment suited to remove this contaminant from the water supply.

How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means

The Meriden Water Division’s UCMR3 monitoring included 24 samples collected between January 2013 and December 2014. Out of these, 3 samples detected 1,4-dioxane above the reporting level of 0.07 µg/L. While the number of samples provides useful data, it remains a snapshot in time and space and may not capture all variation. Small sample sizes mean that concentrations could fluctuate, and occasional detections do not indicate ongoing elevated levels everywhere in the system.

How Sample Depth, Well Depth or Source Type Changes What a Reader Should Expect

This public water system draws from surface water, which generally differs from well water in quality characteristics and contaminant profiles. Surface water can be influenced by runoff or contamination sources over a large catchment area. In private wells, 1,4-dioxane concentrations can be affected by well depth, local soil, and surrounding industrial activities. Household water treatment needs to consider source type because surface water and groundwater contaminants behave differently and require specific treatment approaches.

Why Aesthetic Secondary Standards Differ from Health-Based Limits, Applied to This Constituent

For 1,4-dioxane, the EPA has established a cancer risk reference concentration of 0.35 µg/L, which is not a regulatory maximum contaminant level but serves as a benchmark for health risk evaluation. Detected values in the Meriden Water Division sometimes surpass this reference concentration, but no federal maximum contaminant level exists for 1,4-dioxane, and therefore no violations occur. Secondary standards relate to taste, odor, or staining and do not apply to 1,4-dioxane, which is primarily a chemical contaminant assessed for health risks.

How Seasonal or Multi-Year Variation Shows in the Record (Dates and Ranges Given)

The documented data covers monitoring from 2013 through 2014, showing that 1,4-dioxane detections varied across sampling events. Seasonal changes affecting surface water quality, such as runoff or precipitation patterns, could influence contaminant levels, though the available data does not specify seasonal trends explicitly. Multi-year data remains limited to these two years, so ongoing monitoring would better define longer-term fluctuations.

For households in the affected New Haven County towns using the Meriden Water Division system, confirming your home's water 1,4-dioxane levels requires a private water test, as public data informs about system-wide presence only. To address any detected 1,4-dioxane in your household demand, the Fleck 1,4-Dioxane Filter offers a documented treatment method that ships ready to configure for home water treatment needs.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2014-12-16. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for Meriden Water Division (CT0800011), CT: 24 results across 1 listed contaminants, 3 detections above the reporting level; no federal MCL; EPA cancer risk reference concentration 0.35 ug/L