{"id":7414,"date":"2024-03-08T11:31:18","date_gmt":"2024-03-08T17:31:18","guid":{"rendered":"https:\/\/www.iowawatercenter.org\/?post_type=portfolio&#038;p=7414"},"modified":"2024-03-08T11:31:18","modified_gmt":"2024-03-08T17:31:18","slug":"treatment-impacts-on-per-and-polyfluoroalkyl-substances-pfas-discharge-in-wet-weather-flows","status":"publish","type":"portfolio","link":"https:\/\/www.iowawatercenter.org\/portfolio\/treatment-impacts-on-per-and-polyfluoroalkyl-substances-pfas-discharge-in-wet-weather-flows\/","title":{"rendered":"Treatment Impacts on Per- and Polyfluoroalkyl Substances (PFAS) Discharge in Wet- Weather Flows"},"content":{"rendered":"<p>Per- and Polyfluoroalkyl Substances (PFAS) are a class of over 6,000 persistent,<br \/>\nbioaccumulative, mobile, and toxic environmental contaminants that are ubiquitous in<br \/>\nwastewater and stormwater. PFAS exposure is linked to adverse human health outcomes and<br \/>\nlethal and sublethal toxicity in aquatic species. PFAS discharges in wastewater effluent draw<br \/>\nincreasing scrutiny from states, including Iowa, and federal regulatory rule making is underway.<br \/>\nThe best-studied and most frequently regulated PFAS are perfluoroalkyl acids (PFAAs). PFAAs<br \/>\nare also the terminal transformation products of many precursor PFAS with more complex head<br \/>\ngroups. Wastewater treatment processes can transform many precursor species into PFAAs;<br \/>\nhowever, precursor species are less likely to be researched, monitored, or regulated than their<br \/>\nterminal transformation products.<br \/>\nWe propose to investigate whether shorter hydraulic retention times during wastewater treatment<br \/>\nwill result in less precursor transformation and therefore a greater discharge of PFAS which are<br \/>\n\u201cinvisible\u201d to standard measurement protocols. Proper accounting of often-unmeasured precursor<br \/>\nPFAS\u2014which may contribute to aquatic toxicity and can transform into terminal PFAAs in the<br \/>\nenvironment\u2014will provide a more comprehensive understanding of PFAS discharge to<br \/>\nenvironmental waters from stormwater and wastewater. This improved understanding will enable<br \/>\nmore informed treatment design and the establishment of effective and equitable regulations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Per- and Polyfluoroalkyl Substances (PFAS) are a class of over 6,000 persistent, bioaccumulative, mobile, and toxic environmental contaminants that are ubiquitous in wastewater and stormwater. PFAS exposure is linked to [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","portfolio_category":[10],"portfolio_tag":[],"class_list":["post-7414","portfolio","type-portfolio","status-publish","hentry","portfolio_category-statewide"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Treatment Impacts on Per- and Polyfluoroalkyl Substances (PFAS) Discharge in Wet- Weather Flows - Iowa Water Center<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.iowawatercenter.org\/portfolio\/treatment-impacts-on-per-and-polyfluoroalkyl-substances-pfas-discharge-in-wet-weather-flows\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Treatment Impacts on Per- and Polyfluoroalkyl Substances (PFAS) Discharge in Wet- Weather Flows - Iowa Water Center\" \/>\n<meta property=\"og:description\" content=\"Per- and Polyfluoroalkyl Substances (PFAS) are a class of over 6,000 persistent, bioaccumulative, mobile, and toxic environmental contaminants that are ubiquitous in wastewater and stormwater. 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