PFAS in Drinking Water: What the New Federal Rollback Proposals Mean for Your Home

When you pour a glass of water from your kitchen tap, you probably expect it to be safe. Drinking water is one of those everyday essentials that rarely prompts a second thought. However, concerns about PFAS contamination have brought renewed attention to what may be lurking in water supplies across the country.

In addition, the proposed federal rollbacks to parts of the EPA’s 2024 PFAS drinking water regulations have sparked debate about how these chemicals should be monitored and regulated.

What Are PFAS, and Why Are They Called “Forever Chemicals”?

Per- and polyfluoroalkyl substances (PFAS) are a group of human-made chemicals present in thousands of consumer and industrial products. You can find them in items such as non-stick cookware, stain-resistant carpets, food packaging, cosmetics, laundry detergents and waterproof clothing like raincoats.

The widespread use of PFAS stems from their unique characteristics. They’re exceptionally resistant to heat, oil, water and grease. Unfortunately, the same qualities that make them useful in manufacturing also make them difficult to remove from the environment.

Unlike many substances that naturally break down over time, PFAS can remain in soil, groundwater and surface water for years. Some may persist for decades, which is why they are commonly known as “forever chemicals”.

Once released into the environment, PFAS can travel through waterways and eventually enter drinking water supplies. Industrial facilities, airports, military sites and manufacturing plants have all been identified as potential sources of contamination. Even if you live far from these locations, PFAS can still find their way into local water systems through groundwater movement and environmental runoff.

Why Are Health Experts Concerned About PFAS Exposure?

PFAS contamination has become a significant public health issue because these chemicals can accumulate in your body over time. Small exposures from your drinking water may not seem concerning on their own. However, repeated exposure over many years can increase the amount of PFAS present in your bloodstream. In fact, current science suggests there may be no safe level of exposure for some PFAS compounds.

Exposure to certain PFAS has been linked to a range of potential health concerns, including:

• Developmental issues in infants and children, including low birth weight and accelerated puberty,
• Increased risk of certain cancers, including kidney and testicular cancer,
• Weakened immune system, which may reduce the body’s ability to respond to illness,
• Thyroid disruption, affecting metabolism and hormone function,
• Liver and kidney damage, 
• Reproductive issues, such as decreased fertility.

This growing body of evidence is one reason experts and federal regulators have focused so heavily on reducing PFAS exposure through drinking water. 

How Do the Proposed Rollbacks Differ From Current EPA Standards?

Under the EPA’s 2024 drinking water rule, six PFAS compounds were regulated. These include PFOA, PFOS, PFHxS, PFNA, PFBS and HFPO-DA. The rule set strict limits of 4 parts per trillion (ppt) for PFOA and PFOS, as well as limits for several other PFAS compounds. Public water systems are required to complete monitoring by 2027 and meet the standards by 2029.

The proposed rollback would narrow the focus considerably. If finalized, federal drinking water limits would apply only to PFOA and PFOS. Regulations covering other compounds would be removed. Water utilities would no longer be required to install treatment systems specifically for those chemicals.

The proposal would also give water systems more time to meet the 4 ppt limits for PFOA and PFOS. Instead of complying by 2029, utilities could request an additional two years, extending the deadline to 2031

Supporters say these changes would give municipalities more flexibility and time to fund treatment projects. On the other hand, critics argue that fewer regulated chemicals and longer compliance timelines could make an already invisible problem harder to identify and address.

How Can Homeowners Protect Themselves From PFAS Contamination?

Research suggests that at least one PFAS compound has been detected in 45% of U.S. drinking water samples. While regulatory decisions continue to progress, there are steps you can take to better understand and manage potential PFAS contamination in your home.

PFAS Testing

Many public water systems publish annual water quality reports that can provide useful information about contaminants detected in local water supplies. Reviewing these reports can help you understand whether PFAS have been identified in your area.

If you rely on a private well, however, you may want to consider having it tested privately. Private wells are not subject to the same monitoring requirements as public water systems. This leaves much of the responsibility for water quality in homeowners’ hands.

PFAS testing can help confirm if your water is clean and free of these chemicals. However, it’s important to do laboratory testing, since these forever chemicals require specialized equipment and analysis performed by certified laboratories.

Many PFAS testing kits allow you to collect a sample at home and mail it to a lab for evaluation. You can also contact your local health department, water utility or environmental agency to learn about testing options available in your area.

Filters

There are also multiple filtering options you can choose from:

• Activated carbon filtration: This system uses carbon materials to capture contaminants as water flows through the filter. Many homeowners choose this type of PFAS water filter because it’s widely available and can reduce many forms of PFAS contamination. It’s also available in various formats, such as countertop units, under-sink filters and whole-house systems.
• Reverse osmosis systems: Reverse osmosis forces water through an extremely thin membrane under pressure, which allows water molecules to pass through and trap contaminants. In addition to addressing PFAS, it can remove a range of other impurities commonly found in drinking water.
• Ion exchange: Ion exchange systems use small resin beads that attract and capture PFAS compounds as water passes through the treatment system. This technology has become increasingly popular because it can effectively remove certain short-chain PFAS, which may be more difficult for some filtration methods to address.

Keep in mind the performance of the PFAS filter you choose depends on the system design and the specific contaminants present in your water. For example, you could use ion exchange on its own or combine it with activated carbon or reverse osmosis for a more comprehensive water treatment.

Why Is Proactive Testing and Filtration Important Regardless of Federal Policy?

One of the biggest challenges with PFAS contamination is its invisibility. Since they don’t change the taste, smell or appearance of your drinking water, you could pour a perfectly clear glass from your kitchen tap and have no way of knowing whether they’re present.

In many ways, this is what makes PFAS different from more familiar household water concerns. Hard water is present in 85% of American homes, but many homeowners eventually notice telltale signs such as mineral buildup on faucets, cloudy glassware or reduced appliance efficiency. PFAS, on the other hand, leaves no clues. More often than not, testing is the only way to know if they’re contaminating your water and whether you need to consider additional filtration.

Regulations are important, but they’re only one part of the equation. Even when new standards are introduced, implementing them takes time. Water systems may need years to complete infrastructure upgrades, conduct monitoring programs and install treatment technologies.

Making the Invisible Visible

The discussion surrounding forever chemicals is likely to continue for years as scientists learn more about PFAS and policymakers debate how best to regulate them. While proposed rollbacks may affect timelines, monitoring requirements or the scope of federal oversight, they don’t change the nature of the problem itself.

PFAS remain difficult to detect without testing. Exposure can occur without any obvious warning signs. Therefore, taking the initiative to test and filter your water can help you better understand and manage potential risks.