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What do 'detected', 'median', and 'range' mean in the public water PFAS sampling record for Area 05?

A laboratory test report for PFAS lists whether specific compounds were detected above very low reporting levels. In the EPA’s survey of the SAGANING public water system serving Area 05, multiple PFAS substances such as PFOA, PFOS, PFHxS, PFNA, and others were tested. The terms in the record mean the following:

• Detected: The instrument found a measurable amount above a defined minimum reporting level. A detection does not indicate a violation or unsafe condition; it means the compound was measurable.
• Median: The middle value in the reported data set, showing a typical detected level if any were found. In this record, medians are not applicable since all results were non-detected.
• Range: The spread from lowest to highest measured value. Since all PFAS were below reporting levels here, the range is effectively below detection.

How would a homeowner read the median and range from this PFAS sampling data?

The EPA data for SAGANING’s system shows no detections of any PFAS above reporting limits in four separate tests conducted over 2025. This means the median and range values for PFOA, PFOS, PFHxS, and other listed compounds are all below the lowest detectable amount. For a homeowner, this indicates the public system’s water tested well below federal health advisory levels for these substances during sampling.

What should you note before seeking advice on PFAS water treatment for your home?

Before exploring treatment options, keep these points ready:

• The name and identification number of your water system (here, SAGANING 050593203)
• Dates and number of PFAS samples taken
• The specific compounds tested and their detection status (all non-detected in this case)
• Whether your home water is from the public supply or a private source requiring independent testing

What does the measured range tell you compared to federal PFAS standards, and what does it not tell you?

The federal maximum contaminant levels (MCLs) for PFAS compounds like PFOA and PFOS set legal thresholds for safe drinking water starting in 2024. In this system’s data, no PFAS was detected above the lowest reporting levels, all well below MCLs. This demonstrates compliance and no recorded health-based violations by the EPA. However, the absence of detection in public water does not guarantee individual household water is the same. Private wells or local plumbing conditions can differ and require separate testing.

What is the suggested order to rule out PFAS concerns before considering treatment?

Begin by confirming your water source. If served by SAGANING public water system, its records show no PFAS detection. If your water comes from a private well or other sources, the next step is to obtain a certified laboratory test specifically for PFAS compounds. Avoid assuming presence or absence based on area data alone. If PFAS are detected at levels of concern in your water, then consider treatment options designed for these substances.

How do seasonal or multi-year variations appear in the PFAS sampling record for Area 05?

The EPA’s UCMR5 sampling for SAGANING took place between February and November 2025, encompassing multiple dates to capture possible fluctuations. The consistent non-detection across these months suggests stable, very low levels of PFAS throughout this period with no notable seasonal spikes. Long-term monitoring helps identify any changes over time, which so far have not been observed here.

For homeowners in Area 05 measuring PFAS in their water, the Fleck PFAS Forever Chemicals Filter ships ready to configure to address PFAS when detected at concerning levels. Its technology targets the removal of multiple PFAS compounds, helping ensure your household water meets your expectations for safety and quality.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2025-11-03. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR5 monitoring (2023-2025) for SAGANING (050593203), 05: 40 results across 10 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level