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Full‐scale sampling at 16 facilities illustrated that NDMA precursor concentrations, measured by adding chloramine under Uniform Formation Conditions (NDMAUFC), increased across biofiltration at 7 of 16 facilities (by 3–48 ng/L or 12%–296%) but stayed the same or decreased (by up to 5 ng/L or...
Reduction coagulation filtration using ferrous iron (Fe(II)‐RCF), or reduction filtration using stannous tin (Sn(II)‐RF), for the removal of hexavalent chromium (Cr(VI)) from drinking water represent attractive alternatives to ion exchange or reverse osmosis. With a new maximum contaminant level...
Hydraulic performance issues in drinking‐water biofilters have sometimes been associated with phosphorus limitation and increased production of extracellular polymeric substances in previous bench‐scale studies. However, field studies utilizing phosphorus supplementation to improve biofilter...
The formation of disinfection byproducts (DBPs) in finished drinking water is an ongoing challenge for public health agencies and water utilities. The Fourth Unregulated Contaminant Monitoring Rule data were used to assess the prevalence and drivers of haloacetic acids (HAAs)—a class of DBPs—in...
Following the 2021 Marshall Fire in Colorado, this study was conducted to better understand private well and plumbing damage and to develop public health guidance. More than 20 post‐fire drinking water well guidance documents with varied recommendations were found. Approximately 227 wells were...
This research provides new insights on the application of weak‐base (WB) anion exchange resins (AERs) for groundwater treatment of six perfluoroalkyl acids (PFAAs) with different properties. Continuous‐flow column adsorption and regeneration experiments involving WB, polyacrylic, and WB,...
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