How the UCMR5 Survey Differs from UCMR3 in Which Compounds It Looked For and at What Level
The EPA's Unregulated Contaminant Monitoring Rule, known as UCMR, tracks emerging contaminants including PFAS, or per- and polyfluoroalkyl substances, often referred to as 'forever chemicals.' In the current UCMR5 survey (2023-2025), Waterford Township's public water system, which serves over 73,000 people from groundwater sources, was monitored for a wider range of PFAS compounds than in the earlier UCMR3. In particular, UCMR5 included PFHxS, PFNA, HFPO-DA, PFBS, PFHxA, PFPeA, PFBA, and PFHpA, in addition to PFOA and PFOS.
The survey uses detection thresholds (reporting levels) such as 0.004 micrograms per liter (µg/L) or 4 nanograms per liter (ng/L) for PFOA and PFOS, providing a detailed picture of presence but not safety or compliance. Importantly, no measured concentrations in Waterford's system exceeded the upcoming federal maximum contaminant levels (MCLs) set for 2024. This expands understanding beyond what UCMR3 offered by encompassing more compounds and slightly different detection criteria.
Firefighting Foam, Textile Finishing and Landfill Sources: Which Fits This Region's Record
PFAS contamination can originate from industrial uses including firefighting foam, textile finishing, and landfill leachate. Assessing Waterford's 24 monitoring results reveals detections were rare and very low. For example, PFHxS was detected in one instance at 0.0065 µg/L, well below any health-based threshold.
The limited detections suggest none of these common sources have heavily impacted Waterford's groundwater supply. If industrial or municipal practices involving firefighting foam or textile operations had significantly contributed, more frequent or higher detections might appear in the survey data. Similarly, landfill leachate influence would typically show a broader array of PFAS compounds at elevated levels, not observed here.
What Questions a Commercial or Industrial Operator Adds That a Household Does Not
While households focus on residential water quality and personal health, commercial and industrial water users must consider regulatory compliance, volume treatment costs, and potential impacts on processes and equipment. They often require more extensive chemical analysis beyond federal monitoring to address operational risks and legal obligations.
Households benefit from knowing regional sampling results but should confirm their specific water through private testing. Unlike commercial users, they do not usually face regulatory reporting but may prioritize taste, staining, and long-term chemical exposure reduction. Treatment choices differ accordingly.
The Role of Plumbing Material and Age, Separate from the Source Water
Water quality detected at the system level reflects groundwater source conditions, but household plumbing can further affect water characteristics. Older pipes or fittings may introduce metals or other substances unrelated to PFAS.
PFAS compounds, being stable and resistant to degradation, primarily come from source water or distribution system contamination rather than plumbing materials. Therefore, choosing a treatment class specifically targeting PFAS focuses on source contamination rather than plumbing age.
How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means
The Waterford Township system’s UCMR5 survey includes 24 PFAS measurements taken from groundwater sources serving over 24,000 connections. Although this provides a valuable snapshot, it represents a limited dataset relative to all water sources in the area.
Small sample sizes can miss localized fluctuations or private well conditions. Individual homeowners interested in precise knowledge should consider certified laboratory testing of their own water supply, since system-wide measurements cannot substitute for specific household data.
What Test to Order and the Result That Would Settle the Question
To determine the appropriate class of treatment for PFAS in your household water, order a comprehensive PFAS panel through an EPA-certified laboratory targeting the compounds monitored by UCMR5. This test will measure concentrations in nanograms per liter (parts per trillion) for compounds such as PFOA, PFOS, PFHxS, and others relevant to the Waterford system.
A result showing no detections above reporting levels aligns with regional data and suggests standard water treatment methods suffice. Detecting any PFAS, even at low levels, supports consideration of specialized treatment technology designed to address 'forever chemicals.'
One documented technology suitable for residential use is the Pentair PFAS Forever Chemicals Filter. This system ships ready to configure and is engineered specifically to reduce PFAS compounds effectively, complementing informed decision-making based on test results and regional monitoring data.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2023-09-11. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR5 monitoring (2023-2025) for WATERFORD TOWNSHIP (MI0006910), MI: 240 results across 10 listed contaminants, 1 detections above the reporting level; compared with the applicable federal MCL, none above