What's in Your Water?

With new EPA proposals for PFAS regulations and ongoing concerns about microplastics and pharmaceuticals, understanding what's in your drinking water is increasingly relevant. We explore the latest updates and what they mean for your home water quality.

So, what's in your water? This natural curiosity is more relevant than ever, especially with recent updates from the U. S. Environmental Protection Agency (EPA) on drinking water standards for 'forever chemicals' like PFAS, and ongoing discussions about microplastics and pharmaceuticals. A recent GlobeScan survey from April 2026 even highlighted water pollution as the top environmental concern worldwide, reflecting a collective desire for clear answers. Adding to this awareness, we've also seen widespread beach advisories this week across the United States due to elevated bacteria levels, reminding us all how interconnected water quality truly is.

So, what's in your water? Let's begin with PFAS, often called 'forever chemicals' due to their persistence in the environment. These compounds have been widely used in various products and are now a significant focus for water regulators. In May 2026, the EPA proposed modifications to the 2024 national drinking water standards for PFAS. Notably, these proposals suggest repealing limits on four specific PFAS types—GenX, PFHxS, PFNA, and PFBS—citing issues with the original regulatory procedure. While this might sound concerning, the EPA intends to uphold existing Maximum Contaminant Levels (MCLs) for PFOA and PFOS, both set at a very low 4 parts per trillion (ppt). They are, however, proposing to extend the compliance deadline for eligible water systems by two years, from 2029 to 2031, acknowledging the complexities public water systems face in implementing new treatments. Public input is still vital here, with hearings scheduled for July 7, 2026, and comments accepted until July 20, 2026. Furthermore, nearly $1 billion in grant funding has been made available to states to help address PFAS and other emerging contaminants, which is a positive step towards bolstering infrastructure and treatment capabilities. Another area gaining increasing attention is microplastics. These tiny plastic particles, shed from everyday items, are pervasive in our environment.

In a significant move on April 2, 2026, the EPA, in collaboration with the Department of Health and Human Services (HHS), officially designated microplastics as a priority contaminant group in its draft Sixth Contaminant Candidate List (CCL 6) for drinking water, a list that identifies contaminants for potential future regulation under the Safe Drinking Water Act. This marks the first time microplastics have received such elevated status, paving the way for focused research and potential future regulation under the Safe Drinking Water Act. The HHS has also launched a substantial $144 million program, STOMP (Systematic Targeting of Microplastics), dedicated to studying microplastics in both human bodies and drinking water, highlighting the commitment to understanding their impact.

Similarly, pharmaceuticals are now under heightened scrutiny. Also included as a priority contaminant group on the EPA's draft CCL 6 in April 2026, the presence of medicine residues in drinking water sources is being carefully evaluated. To aid in this, the EPA released human health benchmarks for 374 pharmaceuticals in March 2026, providing crucial tools for states and water systems to assess risks and prioritize monitoring efforts.

Beyond these emerging concerns, more traditional contaminants like nitrates, arsenic, and disinfection byproducts, such as Trihalomethanes (THMs), remain consistent priorities for public health. We also face the ongoing challenge of aging water infrastructure, which the American Water Works Association (AWWA) highlighted as the most pressing issue in its 2026 'State of the Water Industry' report.

For you, as a homeowner, these developments reinforce the importance of being informed about your local water supply. Public water systems are obligated to provide annual Consumer Confidence Reports (CCRs) that detail local water quality and identified contaminants. Reviewing these reports is an excellent first step. Given the evolving nature of contaminants like PFAS, microplastics, and pharmaceuticals, many homeowners are also considering in-home water filtration solutions. While public water systems work diligently to meet current and future regulations, a certified home water filter can offer an additional layer of assurance, addressing specific concerns you might have about your tap water. Look for certifications from independent organizations like NSF International, which ensure filters meet specific contaminant reduction standards. Staying informed and proactive about your water quality is a worthwhile endeavor. As the science and regulatory landscape continue to evolve, our collective understanding and commitment to safe, clean water will guide us forward.