Latest news, insights, and discussion on US and global drinking water regulations.

WATER INDUSTRY FEATURES, INSIGHTS, AND ANALYSIS

EPA Seeks Court‑Ordered Removal Of 4 PFAS Limits The U.S. EPA is testing a new procedural strategy to remove four PFAS drinking‑water limits from ongoing litigation, asking the D.C. Circuit Court of Appeals to invalidate those limits on the grounds that the EPA itself committed a procedural misstep when issuing the 2024 PFAS rule.
Putting The National Toxicology Program's Fluoride Review In Context Despite renewed public concern over fluoride and cognition, the National Toxicology Program’s findings focus on high‑fluoride groundwater conditions — not the controlled levels used in U.S. drinking water systems. Understanding that distinction is critical for utilities navigating policy questions and community expectations.
Opinion: Why PFAS Policymakers Should Read Past The Abstract When it comes to drinking water, sound public policy requires sound scientific research. Publication in a prestigious, peer-reviewed journal helps establish legitimacy for scientific claims in public discourse. But science is a social process, scientific standards of evidence vary across disciplines, and peer review does not guarantee validity. For readers who stop at the abstract, these distinctions can be easy to miss.
Planting The Seeds Of Inspiration: Eelgrass Restoration
Restoring eelgrass beds is critical because they provide habitat for many kinds of marine life, improve water quality by filtering out pollution, and the plant’s root system stabilizes the sediment on the seafloor, protecting shorelines from erosion.
PFAS Are Turning Up In The Great Lakes, Putting Water Supplies At Risk — Here's How They Get There No matter where you live in the U.S., you have likely seen headlines about PFAS being detected in everything from drinking water to fish to milk to human bodies. Now, PFAS are posing a threat to the Great Lakes, one of America’s most vital water resources.
Why Too Much Phosphorus In America's Farmland Is Polluting The Country's Water When people think about agricultural pollution, they often picture what is easy to see: fertilizer spreaders crossing fields or muddy runoff after a heavy storm. However, a much more significant threat is quietly and invisibly building in the ground.
Water In 2026: The Nexus Of Policy, Technology, And Resilience As water systems become more circular and complex, understanding and managing the subsurface — the hidden half of the water cycle — is becoming a critical enabler of resilience. This article explores the key trends shaping this new reality, from tackling “forever chemicals” to the water strategies redefining heavy industry.
PFAS In Pregnant Women's Drinking Water Puts Their Babies At Higher Risk, Study Finds
When pregnant women drink water that comes from wells downstream of sites contaminated with PFAS, known as “forever chemicals,” the risks to their babies’ health substantially increase, a new study found. These risks include the chance of low birth weight, preterm birth, and infant mortality.
PFAS Settlements: Debunking The Myths And Revealing What's Really At Stake For Water Utilities Misinformation and confusion could prevent some utilities from benefitting from the aqueous film-forming foam multidistrict litigation (AFFF MDL) settlements. Here are five common myths about the AFFF MDL PFAS settlements and how public water systems can make the most of this unprecedented funding opportunity.
When Chemistry Meets Water Innovation
Nobel-winning molecular materials are poised to reinvent purification, desalination, and reuse.

DRINKING WATER PRODUCTS

NeoTech D438™

The NeoTech D438™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

Cloth Media Filtration Removes Coal Ash And Coal Fines At Power Plants

Coal-fired power plants generate coal fines and coal ash from a number of sources, including coal combustion residuals (CCR), particularly fly and bottom ash from coal furnaces, and coal pile runoff during rain events. In support of an industry-wide effort to reduce, improve, and remove coal ash ponds, a variety of technologies have been tested and employed. Read the full application note to learn more.

SuperDisc™ Disc Filter

WesTech’s SuperDisc™ Disc Filter from Nordic Water is a Title 22 approved inside-out disc filter.The SuperDisc provides easy access for maintenance and has an efficient high pressure cleaning system. The small footprint and low head required for the filter provides an excellent option for tertiary retrofits, such as travelling bridge sand filters. The SuperDisc can produce reuse-quality effluent and total effluent phosphorus concentrations of less than 0.1 mg/L. Other applications include primary and secondary treatment, as well as a wide range of industrial applications. The SuperDisc filter is available as a freestanding unit with filter discs contained in a stainless steel tank and a version for installation in a concrete basin.

Disinfection Series

The NeoTech Aqua Disinfection Series is specially designed to disinfect water and is an essential component in advanced oxidation processes.

AOS Advanced Oxidation System

Highly effective against bacteria and viruses, the Advanced Oxidation System (AOS) is also well-suited for the decontamination of hard-to-treat organic contaminants such as pharmaceuticals and other micropollutants The AOS can be configured to deliver optimized performance for most water or wastewater treatment applications.

Potable Water Storage Unit: MSU-40

Minimize potable water hauling costs with modular onsite storage units from newterra – the leader in advanced camp water solutions.

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PFAS regulatory requirement-GettyImages-2220893562

EPA Seeks Court‑Ordered Removal Of 4 PFAS Limits

Putting The National Toxicology Program's Fluoride Review In Context

Despite renewed public concern over fluoride and cognition, the National Toxicology Program’s findings focus on high‑fluoride groundwater conditions — not the controlled levels used in U.S. drinking water systems. Understanding that distinction is critical for utilities navigating policy questions and community expectations.
HAAs In The EU: Monitoring For Haloacetic Acids Under The Drinking Water Directive

In this Q&A, Dr. Elke Süss of Metrohm addresses the urgent need for haloacetic acid testing in response to “one of the most significant updates to EU drinking water monitoring in recent years.”
PFAS Unpacked: Experts Answer Questions On EPA Rules, Funding, Treatment, And More

With the U.S. EPA's PFAS rules now in place, utilities are finding themselves with a growing number of questions regarding how to treat these chemicals, the potential costs, and much more. For answers, Water Online's chief editor, Kevin Westerling, hosted an Ask Me Anything session featuring Ken Sansone, Senior Partner at SL Environmental Law Group; Kyle Thompson, National PFAS Lead at Carollo Engineers; and Lauren Weinrich, Principal Scientist at American Water.
Monitoring Know-How For PFAS Regulations

A Q&A to explain and resolve issues confronting water suppliers as they endeavor to comply with the monitoring requirements of federal PFAS regulations.
Clearing LCRI Hurdles

Assessing what lies ahead in the 10-year race to go lead-free, otherwise known as the Lead and Copper Rule Improvements (LCRI).

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3 Utilities Turning Wastewater Into Opportunity With Advanced Treatment And Reuse

Read about three of the most pressing wastewater challenges utilities face today and how Stratmoor Hills, Key West Resort Utilities, and Beijing Water Group are using advanced treatment and reuse to overcome them.
Performance Test Services For UV Advanced Oxidation Systems

UV AOP performance verification requires a robust test matrix covering design, operating, and control conditions. This process includes on-site execution, sample analysis, and troubleshooting to achieve successful regulatory approval.
From Syringes To Wearables: Formulation's Impact

High‑concentration biologic formulations for prefilled syringes and on‑body devices enable easier self‑administration, reduce treatment burden, boost adherence, and address complex formulation challenges.
Hot Springs Combats Aging Infrastructure Challenges With Xylem Digital Solutions

The City of Hot Springs, Arkansas knows the challenges of dealing with aging infrastructure well. The city’s 143-year-old system covers 923 miles of water mains in rocky terrain, making it difficult to detect leaks. That is why the utility’s water department decided to act.
Photovoltaics

SWIR photoluminescence imaging enables fast, contactless inspection of photovoltaic materials, detecting defects and performance indicators with high efficiency, minimal preparation, and real-time imaging capability.
Characterizing Binding Interactions By ITC

Isothermal Titration Calorimetry is a powerful technique for analyzing biochemical binding events, which is crucial for understanding molecular interactions and enzyme kinetics in biomedical research.
A Risk-Based Approach To Plasmid DNA And mRNA Process Development

Balancing robust analytics and clinical readiness is key for early-phase pDNA and mRNA therapeutics amid structural complexity and regulatory challenges.
Conflict Of Interest: Implications For Clinical Research Sites

Amid scrutiny of the financial conflicts of interest in biomedical research, new federal rules aim to improve transparency and preserve the integrity of publicly funded research.
Microfiltration Membranes Lead The Way In Water Filtration

For water treatment professionals prioritizing precision and efficiency, hollow-fiber microfiltration membranes are revolutionizing the way industries and municipalities treat water.
System Performance Depends On Cleanliness

The Lee Company highlights contamination risks in fluidic systems, offering guidance on detection, prevention, safety screens, and ROB number comparisons to ensure long-term performance and reliability.
MBR vs. Conventional: Why Operator Experience Comes Down To Design, Not Membranes

This article isn’t about the theoretical benefits of MBR technology. It’s about what actually impacts day-to-day MBR operation—and what makes an MBR plant feel intuitive, stable, and predictable… or frustratingly complex.
PHI And Medical Devices: What Device Manufacturers Need To Know

Connected medical devices must treat Protected Health Information (PHI) protection as integral to patient safety and compliance. Understand the data flows and HIPAA requirements to design security.
From Carbon Supply To System Optimization Services: Calgon Carbon's Total Solutions Advantage With Field Services

While any company can claim to offer these services, WTPs need a total solutions provider that understands GAC technology as only a manufacturer can.
Oligonucleotide Purification And Synthesis

Examine how a 21‑mer oligo was synthesized and purified through systematic resin screening, method optimization, and successful scale‑up to build reliable, high‑purity chromatography workflows.

Clean Water Even During Disaster: Why U.S. Pipe Ductile Iron Pipe Is The Smart Choice For Public Health And Safety

Infrastructure must endure disasters to protect public health. Learn why ductile iron pipe offers fire resistance, seismic stability, and ensures clean, chemical-free water delivery when it is needed most.
Colorado Utility Removes PFCS From Well With Xylem's Ion Exchange System

Perfluoro compounds (PFCs), which are suspected carcinogens, are a growing concern for communities and a challenge that many water utilities need to address. When the Stratmoor Hills Water District detected PFCs in a seasonal well, the utility partnered with Evoqua, a Xylem company, to find a cost-effective solution.
Challenges In Ensuring Long-Term Water Quality (And How To Address Them)

Read about how mixers help prevent stratification, maintain consistent disinfectant distribution, and reduce sediment buildup, thereby mitigating public health risks associated with water storage.
Covalent Warhead Reactivity: A New Look At GSH Reactivity Assays

Understanding covalent warhead kinetics is key to reducing safety risks early in discovery. Learn about a new approach to GSH‑based measurements that offers clearer predictors of toxicity.

WATER INDUSTRY FEATURES, INSIGHTS, AND ANALYSIS

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