Which of the fluorinated compounds in this record now carry a 2024 federal MCL and which do not?
The 2024 federal maximum contaminant levels (MCLs) have been established for certain per- and polyfluoroalkyl substances (PFAS) in the Cleveland Public Water System, which uses surface water and serves over 1.3 million residents in Cuyahoga County. These enforceable limits specifically cover compounds including PFOA, PFOS, PFHxS, and PFNA, with MCLs set between 4.0 and 10 nanograms per liter (ng/L), equivalent to parts per trillion, depending on the compound.
Not all fluorinated compounds in the region’s monitoring are subject to these MCLs. For example, PFBS, PFHxA, PFPeA, PFBA, and PFHpA, while monitored, do not currently have federal MCLs. The federal survey data records no detections above the reporting levels for all these compounds, and, notably, no measurements exceed the established MCLs.
How to compare this area's record with a neighboring county's without overreading it?
EPA occurrence data reflect the public water system’s overall water quality but do not capture household-level variations. When comparing Cuyahoga County’s data to neighboring regions, it is important to consider the scope differences—this record documents system-wide sampling results, not individual wells.
Because local sources of PFAS and their concentrations can vary widely, an absence of detections above reporting levels in one county does not guarantee the same for the next. Differences in surface water sources, groundwater influence, and treatment practices all affect PFAS presence. Therefore, using these records to infer specific household water characteristics risks overinterpretation.
How public-system records differ from private-well testing in what they establish
Public water system sampling under EPA’s Unregulated Contaminant Monitoring Rule (UCMR5) is designed to assess regional water quality comprehensively. It provides a snapshot of the water delivered to all retail connections but does not measure individual home plumbing conditions or localized contamination.
In contrast, private well testing provides specific data for a single water source, which may differ significantly from the public system’s overall profile. Given your equipment failure, confirming your own water’s PFAS levels via lab testing is essential before choosing how to address the issue.
What the measured range means against the relevant federal standard, and what it does not mean
The EPA data for the Cleveland Public Water System from 2024 through mid-2025 show all PFAS compounds detected at levels below both reporting thresholds and established MCLs. This means the water system itself maintains PFAS levels within federally set limits.
It is crucial to emphasize, however, that detections at or below the reporting level represent measured presence only and are not violations or indicators of unsafe water. The data do not guarantee the absence of PFAS in individual home water, especially following equipment failure which can affect water quality on site.
How to judge treatment capacity against the household's or facility's daily demand
Once your home's PFAS removal equipment has failed, selecting replacement technology involves understanding your household’s daily water use. Treatment solutions vary in capacity, regeneration frequency, and maintenance needs.
The Fleck PFAS Forever Chemicals Filter ships ready to configure and is designed for residential use to reduce fluorinated compounds effectively. Evaluating your typical daily water usage helps ensure the system you choose maintains water quality without running out of treatment capacity prematurely.
What test should you order next, and what result would settle the question?
The best step to clarify your home's PFAS status is to have your tap water tested by a certified laboratory targeting the specific fluorinated compounds relevant to your region. A comprehensive test covering PFOA, PFOS, PFHxS, PFNA, and other common PFAS provides a clear profile of your water after equipment failure.
A result showing all compounds below detection would confirm that your household water aligns with the broader public system’s safe profile. If levels are found above detection, reconsidering treatment options like the Fleck PFAS Forever Chemicals Filter can provide peace of mind and ongoing protection.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2025-06-03. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR5 monitoring (2023-2025) for CLEVELAND PUBLIC WATER SYSTEM (OH1801212), OH: 160 results across 10 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level
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