This week, families in Bucks County face the decision of selecting the right water treatment equipment to address concerns about PFAS—per- and polyfluoroalkyl substances, sometimes called 'forever chemicals'—detected in their public water system's supply.
1. Firefighting foam, textile finishing and landfill sources: which fits this region's record
The NWWA Warrington Township system serving Bucks County relies on surface water sources. The PFAS compounds commonly linked to firefighting foam, textile finishing, and landfills were monitored under EPA’s UCMR5 program from 2023 to 2025. The data show no detectable levels of PFOA, PFOS, PFHxS, PFNA, HFPO-DA, PFBS, PFHxA, PFPeA, or PFHpA above reporting thresholds in 40 samples. Only PFBA—perfluorobutanoic acid—was detected in two samples at very low levels. This pattern aligns with limited regional PFAS presence from industrial or landfill sources, suggesting such contamination sources have minimal impact on system water quality here.
2. Why PFOA and PFOS are measured in nanograms per litre and what four decimal places mean
PFAS compounds like PFOA and PFOS are measured in nanograms per litre (ng/L), equivalent to parts per trillion (ppt). Detecting concentrations at four decimal places such as 0.004 µg/L (4 ng/L) reflects advanced analytical methods capable of identifying extremely low amounts of these chemicals. The federal maximum contaminant levels (MCLs) for PFOA and PFOS are set at 4.0 ng/L, indicating regulatory attention to even trace quantities. Understanding this unit scale is critical for interpreting what detection means relative to health-based standards.
3. How many samples and wells stand behind the figures, and what a small sample means
The public water system’s PFAS data is based on 40 monitoring results from the system as a whole, covering 8,788 connections and over 21,500 residents. These are federal occurrence survey samples, not individual residential tests, and do not represent every tap or well in Bucks County. A smaller number of samples or sampling points limits resolution about spatial variability, so individual household water quality can differ from system-wide averages. Homeowners must still test their own tap water to know precise local concentrations.
4. Which fixtures, appliances or processes are affected first and why
Fluorinated compounds in water can affect household fixtures where water contacts internal surfaces or is consumed, such as kitchen faucets, water dispensers, and ice makers. Because PFAS resist breakdown, they accumulate in water that passes through filters or softeners that do not specifically target these substances. Prioritizing treatment for drinking and cooking water outlets helps reduce exposure since these points usually concentrate consumption and ingestion.
5. What the measured range means against the relevant federal standard, and what it does not mean
The data for Bucks County’s public water system shows no PFAS compounds at or above their federal MCLs. Detection above the minimum reporting level, such as small amounts of PFBA, indicates presence but not a violation or unsafe condition. These measurements do not imply that individual tap water is free of PFAS, nor do they suggest health risks on their own. They serve as a benchmark for assessing whether advanced treatment might be beneficial.
6. How to judge treatment capacity against the household's or facility's daily demand
Selecting treatment equipment for PFAS depends on matching filter capacity with household water use. Consider peak daily water demand from faucets and appliances affected first, as well as ongoing consumption patterns. Treatment systems designated for PFAS, such as the Fleck PFAS Forever Chemicals Filter, ship ready to configure and offer scalable capacity options. Accurately measuring your household’s water flow and volume needs ensures effective treatment without oversizing.
Understanding these six steps helps Bucks County residents make informed choices about managing PFAS in their water. The Fleck PFAS Forever Chemicals Filter provides a documented option designed to address fluorinated compounds directly, calibrated to your household’s daily water demand and the characteristics of your local water supply. Testing your own water remains essential to tailor treatment accurately to your home’s conditions.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2025-10-22. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR5 monitoring (2023-2025) for NWWA WARRINGTON TOWNSHIP (PA1090070), PA: 400 results across 10 listed contaminants, 2 detections above the reporting level; compared with the applicable federal MCL, none above