Which PFAS Compounds Carry 2024 Federal MCLs and Which Do Not?
Recent EPA monitoring records for the Bartow County public water system, which serves Cartersville through surface water, show that several per- and polyfluoroalkyl substances (PFAS) have been detected at low levels. Among these, six compounds now have federally enforceable maximum contaminant levels (MCLs) effective in 2024: PFOA and PFOS, each with an MCL of 4.0 nanograms per liter (ng/L) or parts per trillion (ppt); PFHxS, PFNA, and HFPO-DA, each with an MCL of 10 ng/L; and PFBS, which does not currently carry an MCL. The monitoring results showed no detections of PFOA, PFOS, PFHxS, PFNA, or HFPO-DA above their reporting levels, and no exceedances of the MCLs. Certain other fluorinated compounds such as PFBS, PFHxA, PFPeA, and PFBA were detected at low concentrations, but these do not have established federal MCLs at this time.
The Hazard Index for Mixtures of Newer Compounds, Explained Without a Health Claim
Though some fluorinated substances like PFBS, PFHxA, PFPeA, and PFBA lack individual MCLs, researchers recognize that exposure to various PFAS compounds simultaneously may have additive effects. Regulatory agencies evaluate these mixtures through a hazard index approach, estimating potential risk based on known toxicities without asserting direct health claims from detection data. In Bartow County’s water system records, concentrations of these compounds were detected at levels below thresholds associated with regulatory concern. Understanding the hazard index concept helps frame potential impacts, but it does not indicate that the public water supply poses any violation or documented health risk.
How PFAS Enter Groundwater or Distribution Systems in Bartow County
PFAS, often referred to as “forever chemicals” due to their persistence, can enter water sources through industrial discharges, use of firefighting foams, textile processing, and landfill leachate. In the Bartow County area, the public supply relies on surface water sources, which may be influenced by these factors in the broader watershed. PFAS compounds can migrate into surface water bodies and infiltrate treatment systems. The presence of low-level detections in monitoring reflects environmental background levels rather than contamination from localized point sources. Therefore, while the system supplies many households, individual well water may vary and should be tested separately if concern arises.
How the Pentair PFAS Forever Chemicals Filter Removes or Neutralizes PFAS
For homeowners evaluating treatment options against PFAS, the Pentair PFAS Forever Chemicals Filter offers a documented approach designed to reduce a broad spectrum of fluorinated compounds. This system uses specialized filtration media that captures and holds PFAS molecules, preventing them from passing into household water fixtures. By addressing multiple PFAS compounds simultaneously, this filter targets “forever chemicals” effectively within a residential setting. Since the unit ships ready to configure, it allows users to incorporate it into their water system to decrease PFAS levels at the point of use, complementing the absence of exceedances in municipal water records.
Which Fixtures, Appliances, or Processes Are Affected First and Why
Fluorinated compounds in water first impact drinking and cooking water, where filtration can most directly reduce exposure. Faucets and kitchen appliances such as ice makers or coffee machines benefit from point-of-use treatment because these locations deliver water for ingestion. Other household uses like bathing or washing may have less direct PFAS concern, though filters designed for the full house may also be available. Selecting the right approach depends on whether the homeowner seeks targeted reduction at drinking locations or broader system treatment, factoring in the compounds present, the scale of treatment desired, and cost considerations.
What You Should Not Conclude from Area Data Alone
The EPA’s detection results for Bartow County’s public water system provide valuable insight into regional PFAS presence but do not specify the exact concentrations in any individual household’s water. Detection above reporting levels means measurement occurred but is not a health violation or proof of unsafe water. No detected PFAS compounds exceeded federally established MCLs. For well owners or residents with separate water sources, testing is essential to determine actual exposure levels. While regional monitoring informs general water quality profiles, personal water decisions should be based on direct testing and professional guidance. Utilizing a treatment system such as the Pentair PFAS Forever Chemicals Filter can be a practical choice for those seeking an added layer of precaution against a range of fluorinated substances.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2026-06-03. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR5 monitoring (2023-2025) for BARTOW COUNTY (GA0150001), GA: 190 results across 10 listed contaminants, 13 detections above the reporting level; compared with the applicable federal MCL, none above
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