Seasonal and Multi-Year Variation in PFAS Levels in New Haven County Water
The Regional Water Authority in New Haven County, CT, serving over 418,000 residents including towns like Ansonia, New Haven, and Wallingford, draws its water from surface sources. Between September 2023 and June 2024, EPA monitoring identified several PFAS substances in this system's water. Measurements showed some detections of PFOA and PFOS above reporting limits, with PFOA levels reaching up to 0.0071 micrograms per liter and PFOS up to 0.0107 micrograms per liter. Other PFAS compounds showed no detections above their reporting thresholds. These figures reflect sampling over multiple months and represent federal observations rather than momentary tests of any individual home’s water supply.
Ordering Your Checks: From Basic to Certified Laboratory Testing
With existing water treatment equipment having failed, households seeking to understand their PFAS exposure should proceed in a logical order. First, verify the operational status of current equipment and review local water system data as documented by EPA. Next, simple water quality parameters can be checked to rule out common interferences. If concerns persist, the next step is to collect a certified laboratory test that quantifies PFAS compounds in your specific household water source. This approach helps differentiate between broad system trends and your home's unique water composition, guiding informed action.
Distinguishing Aesthetic Secondary Standards from Health-Based Limits in PFAS Monitoring
Government water data for New Haven County includes comparisons to federal Maximum Contaminant Levels (MCLs) set to protect public health. For example, the federal MCL for PFOA and PFOS is 4.0 nanograms per liter (ng/L). Detected levels in this system slightly exceeded that threshold in some tests, but detections do not equate to health violations or unsafe water by themselves. Aesthetic secondary standards, which govern taste, staining, or corrosion, differ from health-based MCLs and are not applicable here. Understanding this distinction clarifies public water system records and their implications for household water.
Comparing PFAS Data in New Haven County with Neighboring Areas Without Overinterpretation
When evaluating water quality records, it is important not to attribute regional sampling results directly to individual homes or neighboring counties without evidence. New Haven County’s Regional Water Authority has documented PFAS measurements specific to its service area; adjacent counties may have different water sources, sampling schedules, or environmental factors. Comparing numerical results side by side should be done carefully, recognizing that detections reflect measurement presence, not levels of risk or contamination at any given residence.
Maintaining the C-Series PFAS Forever Chemicals Filter for Consistent Performance
The C-Series PFAS Forever Chemicals Filter ships ready to configure in a household water system. Maintenance consists of regular filter element replacement based on water use and monitoring results to sustain effective PFAS reduction. This maintenance rhythm helps ensure that treatment capacity aligns with household needs, guarding against potential PFAS exposure when existing equipment is no longer effective.
In summary, New Haven County’s public water system has recorded PFAS detections with seasonal variation but no health-based violations. Households with failed equipment should methodically evaluate their water quality starting from simple checks through certified testing before considering replacement treatment like the C-Series system.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2024-06-11. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR5 monitoring (2023-2025) for REGIONAL WATER AUTHORITY (CT0930011), CT: 300 results across 10 listed contaminants, 15 detections above the reporting level; 8 results above a 2024 federal MCL