In this episode Talking Under Water the co-hosts discuss the addition of microplastics to the EPA’s Sixth Contaminant Candidate List (CCL6), enforcement fallout from the Potomac interceptor sewer collapse, industrial wastewater sampling tied to a Tesla facility in Texas, and recent stormwater headlines across the U.S.  Show notes How EPA Regulates Drinking Water Contaminants CCL 6 Frequent Questions Drinking Water Contaminant Candidate List 6-Draft Drinking Water Contaminant Candidate List 6 (CCL 6) Docket Folder Water Research Foundation Project 5155 (Consumer messaging guidance, microplastics) Understanding microplastics in water: Fact vs. fiction (Brent Alspach video interview) WaterWorld subscription EPA, DOJ sue DC Water over Potomac Interceptor collapse Lab analysis details wastewater characteristics at Tesla-linked site in Texas Poll: Which wastewater process area will you focus on this year? Charleston seeks $4.6 million to replace flood-prone homes with rain gardens, retention ponds  Grand Canyon eases water restrictions as aging system challenges persist L.A. County captures record 120 billion gallons of stormwater, boosting local supply Timestamps 00:00 Cold open 00:48 Introduction 01:27 EPA/HHS joint initiative announced to address microplastics 02:13 What the CCL is and how EPA uses it 02:39 How EPA decides whether to regulate (three criteria) 04:02 Draft CCL6 overview (chemicals, microbes, and groups) 05:01 Public comment process + key deadline 05:54 STOMP program explained 09:02 Potomac interceptor collapse 11:05 Tesla-linked wastewater characteristics  13:03 Douglas County, NV stormwater utility and rate proposals 14:33 Charleston, SC buyouts + rain gardens/retention 15:34 Grand Canyon National Park water system update 16:05 LA County stormwater capture numbers 17:07 Housekeeping About the Podcast Talking Under Water is the premier podcast for the water industry, including municipal water and wastewater, residential water treatment, storm water management and erosion control. It is produced in coordination between Wastewater Digest (WWD), WaterWorld and Storm Water Solutions (SWS). The podcast covers topics under the One Water movement including the municipal and industrial water and wastewater, residential, stormwater and erosion control markets. Talking Under Water highlights news, trends, new technologies, industry discussions and interviews with experts across the municipal water industry. New episodes of the podcast are released every other week. Logo Images: Anatoly Tiplyashin / Romolo Tavani / stock.adobe.com.     Contact the Talking Under Water podcast editors by emailing [email protected] engaging with them on X @TUWpodcast. Join the conversation by commenting or using the hashtag #talkingunderwaterpod on social media.