CONTAMINANT REMOVAL RESOURCES

• 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?

• Designing For Harmful Algal Blooms (HABs) In Surface Water Treatment Plants

  The Toledo water crisis exposed treatment gaps, highlighting harmful algal blooms as a core design challenge requiring flexible, multi-barrier systems and scenario-based planning.

• The Future Of Surface Water Treatment In Critical Infrastructure: Why Digital Planning Is No Longer Optional

  Surface water supplies most urban drinking water, but rising variability and contamination are straining ageing infrastructure—making digital planning tools essential for resilient, future-ready treatment systems.

• Your Chlorine Sensor Is Lying to You — Here's 65 Days Of Proof

  The operators at Compton Durville Water Treatment Works thought their chlorine dosing was under control. Their Siemens Depolox membrane sensor showed residuals right at setpoint. The PID loop was doing its job. On paper, everything looked fine. It wasn't. 

• EPA's Proposed Perchlorate Regulation: What It Means For Treatment Engineers And Oxidation Strategies

  EPA’s proposed perchlorate regulation challenges utilities to integrate advanced oxidation and separation technologies, enabling reliable removal, regulatory compliance, and flexible treatment for emerging contaminants.

• Setting Global Standards: Inside North America's Only Full-Scale UV Disinfection Validation Facility

  Portland's industry-leading facility reaches 100 reactor validations in 23 years.
• Electrocoagulation Unlocked

  Despite electrocoagulation's demonstrated effectiveness, developing a reliable, low maintenance reactor with sufficient water processing volume has proven to be a significant engineering challenge.

• Custom Tank Designs That Actively Manage PFAS Mass Transfer Zone (MTZ) — And Why It Matters More Than Ever

  As utilities prepare for the pending 4-ppt PFAS drinking water MCL, many are discovering that legacy lead/lag designs—workhorses for decades when treating contaminants in the ppm and ppb range—simply are not optimized for the parts per trillion-level (ppt) precision PFAS demands.

• Ion Exchange (IX) Systems

  Ion exchange (IX) is a tried-and-true method of removing metals and other inorganic compounds from water. Arsenic, cadmium, chromium, copper, lead, nickel, selenium, radionuclides, and zinc are just a few examples of the compounds that our ion exchange systems have removed from water.
• Ozone And PFAS: The Overlooked Tool In A National Water Crisis

  Ozone is a vital pre-treatment for PFAS mitigation. It oxidizes precursors and co-contaminants, significantly extending the service life of downstream GAC and membrane systems.