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

WATER INDUSTRY FEATURES, INSIGHTS, AND ANALYSIS

The Devastating Legacy Of Algaecides: Why The Quick Fix Is Failing Our Lakes As warmer months approach, water management professionals must confront the compounding consequences of biocidal algae treatments.
What Is The Future Of Source Water Protection? Water utility managers and municipal leaders have long struggled amid the convergence of several threats to public water supplies. During a recent Water Online Live event, I sat with a panel of industry experts to examine the transition from reactive crisis management to a proactive, adaptive resilience framework.
Drinking Water Contaminated With 'Forever Chemicals' During Pregnancy Linked To An Increased Risk Of Childhood Asthma
While most of us are routinely exposed to low levels of PFAS, some communities are exposed to far higher levels from nearby pollution sources. A new study shows that in one of these at-risk communities, children were more likely to develop asthma if their mothers were exposed to very high PFAS levels during pregnancy.
The Pragmatic Shift In Source Water Protection: Moving From Symptom Management To Root-Cause Accountability A shift in how we approach source water protection is long overdue. Currently, we are trapped in a cycle of escalating costs, forced to treat symptoms like algae and invasive weeds expediently with chemicals while the underlying risk in the reservoir compounds. True risk management requires breaking this cycle.
The AWWA Said $2.4 Trillion. It Missed The Compound Interest. Einstein once said of compound interest, "He who understands it, earns it. He who doesn't, pays it." The same logic of compounding applies to the organic sediment accumulating on the floor of your drinking water reservoir. The longer you wait to address it, the more exponentially expensive it becomes to fix.
Designing Resilient PFAS Treatment Strategies For Water Agencies Water agencies across the U.S. are facing a rapidly evolving regulatory landscape for per- and polyfluoroalkyl substances (PFAS) that poses a conundrum: Should they take a cautious or aggressive approach to treating PFAS contamination in their water system?
The Future Of In Situ Chemical Oxidation For Targeted Solvent Destruction
The U.S. EPA’s 2026 trichloroethylene (TCE) compliance deadlines are now forcing a concrete shift toward source-zone destruction. In situ chemical oxidation (ISCO), sequenced with enhanced bioremediation, is proving to be the most credible path to groundwater contaminant rebound mitigation.
When Drinking Water Raises Bigger Questions About Brain Health And Environmental Risk
A new study linking certain groundwater sources to higher Parkinson’s risk underscores a broader question for the water sector: how environmental exposures in drinking water may influence long-term health.
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.

DRINKING WATER PRODUCTS

EPRO™ Commercial Reverse Osmosis (RO) Systems

EPRO™ Commercial Systems are designed to maximize water purification efficiency. Available models offer a choice of flow rates and configurations for removal of dissolved solids and other impurities from tap water or brackish water. Purified high-quality water is supplied to your application at existing point of use.

NeoTech D322™

The NeoTech D322™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

Ion Exchange Resins Reduce Pollution From Refineries

A single operational oil and gas refinery produces millions of gallons of contaminated wastewater a year, leading to environmental pollution concerns. Ion exchange resins are a metal- and ion-removal solution to help clean this wastewater for plant reuse or safe disposal. This application guide explains how resins can be used to demineralize refinery water in process, boiler, and cooling water applications.

PFAS HPLC Column

The new Ascentis® Express PFAS HPLC column, with its Fused-Core technology and a particle size of 2.7 μm, delivers fast and high-resolution separations with excellent selectivity, peak shape, and necessary retention to perform in EPA methods 537.1, 533 and 8327.

Potable Water Treatment Large Train System: PWT 500

For large camps with populations expected to exceed 2,000 people, newterra’s modular PWT-500 Potable Water Treatment Large Train System employs 40' containers dedicated to a specific, complimentary treatment process (e.g. greensand filtration, nanofiltration, etc.)

High Capacity BABA Compliant Filter Housing

Harmsco has developed a higher capacity filter housing that is BABA compliant, and it is available in a 3X, as well as a 5X model.

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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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Ozone Contactors: The Engineering Variable That Determines Oxidation Success

Ozone system performance hinges on reactor design, not generator size. Efficient mass transfer, hydraulic integrity, and contact time ensure consistent oxidation, reduced energy use, and reliable treatment results.
Case Study: Groundwater DWTP (AK) - DEXSORB Full-Scale

A DWTP client in Alaska detected elevated PFAS contamination levels in two groundwater wells supplying drinking water to 85 service connections. PFAS concentrations are provided in Table 1, where combined concentration of EPA PFAS6 was detected at 490 to 810 ppt.
The Engineer's Guide To Maximizing Dynamic Range In RF Testing

Learn practical strategies for improving RF dynamic range through noise reduction, linearity optimization, filtering, calibration, and advanced signal conditioning techniques.
How Climate Change Is Reshaping Surface Water Treatment Plant Design

Climate change is expanding source water variability beyond historical limits, forcing treatment plants to design for wider conditions—and making digital planning essential for resilient infrastructure decisions.
Designing For Growth: How To Build Modular Capacity Without Breaking Ground Twice

Learn how to design wastewater infrastructure that grows with demand. Modular systems allow phased capacity additions that match actual flow, avoiding the high cost of oversizing and eliminating the need for disruptive, repeated construction.
5 Misconceptions About PFAS Removal Technologies

This article will explore five common misconceptions about GAC and IX technologies for PFAS removal, helping utilities choose effective, site-specific treatment strategies for contaminated drinking water.
The Fifth Freedom: Redefining Utility Choice With WEAD by LeakZon

Discover how WEAD by LeakZon is designed not only to enhance your water network but to empower you with choice and control over your partnerships.
Selecting A Platform Filter For High Concentration mAbs

Read more about how Fujifilm Diosynth Biotechnologies evaluated a prime filter with challenging simulant solutions and how the experimental data confirmed superior performance, which demonstrated twice the throughput.
Keep Your Cool: The Importance Of Advanced Side Stream Filtration In Data Center Operation

Advanced side stream filtration protects sensitive cooling infrastructure in data centers, extending membrane life, reducing water and energy use, and preventing costly downtime caused by particulate-loaded cooling water.
The Role Of Ozone In Municipal Water Treatment

Discover why ozone, a powerful oxidant and sanitizer, has become a leading solution for addressing water quality challenges.
Nitrosamines: Assessing The Risk To Pharma Products

Nitrosamines are a serious risk in drug products, driven by the presence of secondary amines, conducive conditions, and nitrosating agents. Understanding these factors is key to risk mitigation and patient safety.
Mixing It Up: How Active Tank Mixers Help Rehabilitate Aging Water Systems

Aging water storage tanks face stratification and stagnation, threatening water quality. Active mixing ensures uniform disinfectant distribution, reduces flushing, and improves system reliability and regulatory compliance.
Accelerating The Seed Train: Enabling N-1 Intensification

Discover how N-1 intensification shortens production timelines and improves cell viability by replacing traditional filtration with automated, low-shear separation techniques to achieve higher seeding densities.
What Is A Digital Twin And Why Does It Matter For Water Management?

Digital water twins integrate real-time data to create dynamic simulations of physical networks. This collaborative technology empowers teams to visualize system behavior, predict potential issues, and optimize operations for improved reliability and resource management.

When Granular Activated Carbon Isn't Enough: Optimize Performance With A Multi-Barrier Approach

Learn why GAC alone may fall short in PFAS treatment — and how utilities can future-proof performance with multi-barrier strategies that tackle short-chain compounds, regulatory shifts, and rising operational risks.
GeoTree - First Aqueduct Water Pipeline Rehabilitated With GeoSpray Geopolymer For SDCWA

Critical water tunnels require efficient structural renewal to meet strict shutdown schedules. Certified geopolymer mortar provides a cost-effective, high-strength solution that eliminates groundwater infiltration and improves water quality while ensuring a 70-year service life for essential aqueduct systems.
Fast Action Keeps Treatment Plant In Compliance

Explore how rapid equipment replacement and peristaltic pump technology prevented regulatory violations at a major sanitation district. Learn how high-stakes infrastructure failures were resolved through strategic engineering support to ensure continuous delivery of safe 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.

WATER INDUSTRY FEATURES, INSIGHTS, AND ANALYSIS

DRINKING WATER PRODUCTS

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