Pentair PFAS Forever Chemicals Filter

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This week, many homeowners in Raleigh face an important choice: determining which technical approach to use for reducing PFAS chemicals in household water. Understanding local data and how it relates to your water system is essential to making an informed decision.

If You Consider How Source Type and Sample Depth Affect Water Expectations

Wake County's Bayleaf Master public water system draws from groundwater to serve roughly 16,700 residents through over 6,600 connections. Monitoring under the EPA's Unregulated Contaminant Monitoring Rule Phase 5 (UCMR5) found multiple PFAS compounds present in this groundwater source. Key compounds such as PFOA and PFOS were detected above their reporting levels in some samples, with a subset exceeding the 2024 federal maximum contaminant levels (MCLs) set at 4.0 ng/L. PFHxS also appeared above its reporting level with occasional detections surpassing the 2024 MCL of 10 ng/L.

These results describe the water system's supply, not the water inside any individual home. The sampling depth and the groundwater source influence what compounds are detected. Well depth, aquifer characteristics, and local environmental factors also shape what may be found at your tap. Homeowners should understand that system-wide detections do not necessarily reflect their home's water quality precisely.

If You Want to Know Which Fixtures or Appliances Are Most Impacted First

PFAS compounds do not break down easily and can affect any water contact point. However, fixtures and appliances that use or retain water continuously, such as refrigerators with ice makers, coffee machines, or point-of-use filters, can accumulate PFAS residues more noticeably. Treatment methods that filter at the point of entry or at specific faucets can reduce exposure in these areas. Understanding your household's water use patterns helps identify which fixtures will benefit most from targeted PFAS treatment technologies.

If You Consider the Role of Plumbing Material and Plumbing Age, Separate from the Source Water

While the source water contains detectable PFAS, plumbing materials and age generally do not contribute to PFAS levels. PFAS are synthetic chemicals usually introduced into water from environmental contamination rather than from pipes or fittings. However, plumbing condition can affect overall water quality and interact with treatment options, so maintaining plumbing integrity is recommended independently from PFAS concerns.

If You Want to Understand What 'Detected,' 'Median,' and 'Range' Mean in the Sampling Record

The terms in the EPA's data convey different aspects of water quality measurements:

• Detected means the instrument found the chemical above the minimum reporting level. It is not a violation or definitive measure of safety.
• Median of detected values represents the middle value of all detections, indicating typical concentration where present.
• Range shows the spread from lowest to highest detected values, highlighting variation over time or sampling points.

For example, PFOA detections ranged up to 0.0104 µg/L with a median of 0.0054 µg/L, while PFOS reached up to 0.0213 µg/L with a median of 0.0057 µg/L. These figures help assess typical exposures in the Bayleaf Master system but do not predict any individual household’s water exactly.

If You Are Considering What a Certified Laboratory Test Will Report and How to Interpret It

Testing your home's water through a certified laboratory is the only way to know your specific PFAS concentrations. Such tests measure individual PFAS compounds and report detected levels compared to reporting and regulatory limits. Understanding those results involves recognizing that detected levels are not inherently unsafe but can guide treatment decisions based on your household's risk tolerance and use patterns.

Choosing how to reduce PFAS relies on knowing your demand and water quality profile. The Pentair PFAS Forever Chemicals Filter ships ready to configure and uses documented technology to reduce PFAS effectively when matched to your measured water conditions. This system offers a practical solution to address PFAS concerns tailored to your home’s needs.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2025-09-04. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR5 monitoring (2023-2025) for BAYLEAF MASTER (NC0392373), NC: 2160 results across 10 listed contaminants, 238 detections above the reporting level; 39 results above a 2024 federal MCL