In this episode of Talking Under Water, Mandy Crispin and Bob Crossen discuss the EPA’s proposal to establish a national primary drinking water regulation for perchlorate under the Safe Drinking Water Act. The hosts break down the proposed rule, monitoring requirements, cost implications, and what utilities should prepare for, plus give updates on PFAS treatment research and recent wastewater spills. Show Notes EPA proposes national drinking water rule for perchlorate Federal Register: Proposed national primary drinking water regulation for perchlorate What do the new PFAS MCLs mean for the water industry? Steps water systems can take to address perchlorate in drinking water (2020 EPA guidance document) New copper-aluminum layered double hydroxide technology offers sustainable PFAS remediation Georgetown isolates 42-inch wastewater line failure after San Gabriel River spill Houston reports wastewater spill exceeding 100,000 gallons following collection system failure Timestamps 00:00 – Cold open 00:54 – Introduction to episode and overview 01:32 – EPA proposal for perchlorate regulation explained 03:49 – Comparing perchlorate MCLs to PFAS standards 05:00 – Binning approach for monitoring frequency 07:21 – Waiver process for reduced monitoring 09:41 – Initial monitoring requirements and costs 10:02 – Public comment deadline and hearing details 11:04 – PFAS treatment research update 12:23 – Wastewater spill reports 15:29 – 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 (WW) and Stormwater Solutions (SWS). The podcast covers topics under the One Water movement including the municipal and industrial water and wastewater, residential, storm water 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.