Fleck PFAS Forever Chemicals Filter

Buy Now

View full details

Water Supply Overview in Barrow, North Slope Borough

The community of Barrow receives water from a surface water source managed by the Barrow Utilities & Electric Cooperative, serving about 4,900 people through 1,254 connections. This surface water is treated and distributed to homes, where residents might consider additional treatment options for specific contaminants such as PFAS, often known as per- and polyfluoroalkyl substances or 'forever chemicals'.

Hazard Index and PFAS Mixtures

PFAS Compounds Are Monitored Separately and Together

The EPA's unregulated contaminant monitoring (UCMR5) reports multiple PFAS compounds in Barrow's system, including PFOS, PFHxS, PFHxA, PFPeA, PFBA, and PFHpA. These are fluorinated compounds that do not degrade easily in the environment, earning their nickname 'forever chemicals'. While individual measurements are provided, a combined hazard index considering mixtures of these newer compounds helps understand potential cumulative presence without making health-based conclusions.

Granular Carbon Beds vs. Ion-Exchange Resins for PFAS Removal

How Granular Activated Carbon Works

Granular activated carbon filters remove some PFAS compounds by adsorbing them onto carbon surfaces. This method is effective particularly for longer-chain PFAS such as PFOS and PFOA.

Ion-Exchange Resins and Targeted Removal

Ion-exchange resins selectively bind PFAS molecules and may target a broader range of compounds, including shorter-chain substances detected in Barrow's water. Both technologies are documented for PFAS reduction but differ in capacity and the spectrum of chemicals addressed.

Ruling Out PFAS Concerns: Testing and Cost Considerations

Begin with Local System Monitoring Data

Reviewing public water system monitoring results provides a baseline understanding but does not specify an individual home's water quality. EPA findings show detections at levels varying by compound but do not establish individual household concentrations.

Consider Comprehensive Laboratory Testing

For precise PFAS analysis at a residence, a certified laboratory test of the home's water supply is necessary. This step is more expensive but provides definitive data to guide treatment choices.

Evaluate Simple Pre-Treatment Checks

Checking for other water quality parameters and potential sources of PFAS contamination in the home may guide the need for specialized filters without immediate laboratory testing.

Understanding Aesthetic Secondary Standards and Health-Based Limits for PFAS

Aesthetic Concerns Differ from Health Criteria

There are secondary standards related to taste, staining, or corrosiveness in water quality that are separate from EPA’s health-based maximum contaminant levels (MCLs) for PFAS. These secondary standards address consumer experience but do not imply health risk.

Federal MCLs for PFAS in Barrow's Water

The EPA's current health-based MCLs set limits for compounds like PFOS and PFOA at 4.0 nanograms per liter (4 parts per trillion). Barrow's monitored PFOS levels showed some detections above the reporting level but below or near these MCL figures. These measurements reflect system-level monitoring, not individual household water.

Sample Size and Data Interpretation

Number of Samples and Wells Behind the Data

Barrow's water system conducted 12 samples per compound during the 2023-2025 monitoring period. This sample count offers a snapshot rather than exhaustive data, reflecting the system's surface water source across seasons.

Implications of Limited Sample Size

A small number of samples means detected levels may vary over time and do not guarantee exact exposure at all taps. Homeowners should consider periodic testing to assess their specific water quality.

Summary of Decision Path for Residential PFAS Measures

This overview guided through the local water system's PFAS detection data, explaining the complexities of measuring mixtures and distinguishing technologies documented for reducing fluorinated compounds. Homeowners can start by reviewing local system data, explore individual water testing, and then consider equipment like the Fleck PFAS Forever Chemicals Filter that ships ready to configure for home use, providing targeted treatment of these 'forever chemicals'.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2024-12-03. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR5 monitoring (2023-2025) for BARROW UTILITIES & ELEC. COOP., INC. (BU (AK2320078), AK: 120 results across 10 listed contaminants, 23 detections above the reporting level; 8 results above a 2024 federal MCL