Regulations and Legislation

  1. EPA Seeks Court‑Ordered Removal Of 4 PFAS Limits 2/23/2026
    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.
  2. Putting The National Toxicology Program's Fluoride Review In Context 2/13/2026
    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.
  3. HAAs In The EU: Monitoring For Haloacetic Acids Under The Drinking Water Directive 11/7/2025
    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.”
  4. Monitoring Know-How For PFAS Regulations 10/31/2024

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

  5. Clearing LCRI Hurdles 10/31/2024
    Assessing what lies ahead in the 10-year race to go lead-free, otherwise known as the Lead and Copper Rule Improvements (LCRI).
  6. A Tiny Bit Of PFAS 7/12/2024

    In the most recent edition of Water Innovations, there is not a single article focused on PFAS. That wouldn't be exceptional if not for the fact that discussion around per- and polyfluoroalkyl substances has so thoroughly dominated the water space lately. And yet, I penned this as an intro to the edition — just "a tiny bit of PFAS" content — because a small portion of PFAS is of the utmost importance in terms of treatment, policy, and cost.

  7. How CERCLA Complicates The PFAS Problem 8/29/2023

    As states and the federal government attempt to crack down on the proliferation of PFAS and their health consequences with a spate of new regulations, there is one significant upcoming ruling that will have tremendous impact for compliance and costs: the final rule on PFAS CERCLA designation.

  8. Complete PFAS Removal: Are Current Proposals Enough? 6/21/2023
    In this Q&A, a PFAS expert shares his viewpoints on the direction of regulations, as well as what can and should be done to root out so-called "forever chemicals" for good.
  9. Pioneering Utility Shares Insights On PFAS Treatability 4/11/2023

    Horsham Water was one of the earliest and hardest hit by PFAS contamination. Due to their experience, they are also among the best at treating to very low levels. Learn about the "Horsham Standard" and what drinking water utilities can expect as they endeavor to meet the pending national standard.

  10. The Water Industry Reacts To Proposed PFAS Regulations For Drinking Water 3/14/2023

    With the U.S. EPA’s recent announcement proposing maximum contaminant levels (MCLs) for certain PFAS, stakeholders throughout the water industry — representing utilities, industry, the environment, legal interests, and public health — were quick to offer their opinions.