Autotrol PFAS Forever Chemicals Filter

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The public water system serving Farmington in St. Francois County draws from groundwater and reports no detections exceeding federal maximum contaminant levels (MCLs) for PFAS compounds in recent EPA monitoring.

Hazard Index for Mixtures of Newer PFAS Compounds

UCMR5 Results for Farmington PWS

• 28 samples showed no detection of PFOA or PFOS above 0.004 µg/L (4 ng/L), the 2024 federal MCL.
• PFHxS was detected twice slightly above its reporting level but well below the 10 ng/L MCL.
• Single detections of PFPeA occurred just above its reporting level but with no MCL exceedances.

Interpreting the Mixture Factor

While multiple PFAS may be present at trace levels, the combination's hazard index depends on the sum relative to health benchmarks—not on any single detection reported here.

Differences Between UCMR5 and UCMR3 Monitoring

Expanded Compound List in UCMR5

• UCMR5 includes newer per- and polyfluoroalkyl substances beyond those in UCMR3, reflecting updated concerns and technical capabilities.
• Reporting levels in UCMR5 are lower, enabling detection of trace compounds previously unmeasurable.

Implications for Understanding Local Water Quality

This means that data from Farmington’s 2023-2025 sampling provides fresh insight into a wider range of fluorinated compounds, albeit at very low concentrations.

Distinguishing PFAS from Other Common Water Concerns

PFAS Versus Metals and Aesthetic Issues

• PFAS are synthetic substances with unique chemical stability, not related to metals like iron or manganese that can cause staining or taste changes.
• Detected levels in Farmington's system do not reflect typical problems like hardness or chloride-associated taste or corrosion.

PFAS Are Different from Microbiological or Organic Contaminants

They are persistent fluorinated chemicals, often called "forever chemicals," distinct from biological or organic contaminants that pose separate challenges.

How Plumbing Age and Materials Affect PFAS Presence

Source Water Versus Internal Plumbing

• Government data reflect source water in the distribution system but do not capture PFAS levels that might arise from household plumbing materials or fixtures.
• Older pipes or certain materials do not typically contribute PFAS to water; however, a private well’s profile could differ entirely.

Testing is Necessary for In-Home Water Quality

To determine your household’s actual PFAS content, a certified test of your tap water is essential, as system-wide data cannot provide individual results.

Granular Carbon Beds Versus Ion Exchange for PFAS Treatment

Granular Activated Carbon (GAC) Filtration

• Effective for a range of PFAS, including longer-chain compounds, by adsorbing them onto carbon surfaces.
• Requires replacement or regeneration after capacity limits are reached.

Ion Exchange Resins

• Target specific PFAS molecules with strong affinity, often achieving lower effluent levels.
• Also need timely media change to maintain performance.

The documented Autotrol PFAS Forever Chemicals Filter uses these technologies, shipping ready to configure for residential use.

Additional Considerations for Commercial or Industrial Water Users

Higher Volume Demand and Regulatory Compliance

• Commercial operators must consider treatment capacity aligned with daily water use far exceeding residential volumes.
• They may also face differing testing requirements and reporting to authorities.

Complex Mixtures and Source Characterization

Industrial users might need multi-location sampling to address variability and mixtures in groundwater or distribution inputs.

Recommended Testing to Know Your Household Water Quality

Ordering a certified lab test specifically for PFAS compounds in your home water will provide definitive data, enabling informed decisions about treatment needs.

A result below the detection limits established by federal methods would indicate levels consistent with the public water system's profile, helping you assess if an Autotrol PFAS Forever Chemicals Filter is appropriate.

Where this information comes from

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

On record: EPA UCMR5 monitoring (2023-2025) for FARMINGTON PWS (MO4010270), MO: 280 results across 10 listed contaminants, 3 detections above the reporting level; compared with the applicable federal MCL, none above