--- title: | PFOS description: PFOS | --- [![pace logo header white](https://blog.pacelabs.com/hs-fs/hubfs/pace%20logo%20header%20white.png?width=600&height=410&name=pace%20logo%20header%20white.png) ![pace logo header](https://blog.pacelabs.com/hs-fs/hubfs/pace%20logo%20header.png?width=600&height=410&name=pace%20logo%20header.png)](https://www.pacelabs.com) - [Analytical + Environmental](https://www.pacelabs.com/analytical-environmental/) - [Life Sciences](https://www.pacelabs.com/life-sciences/) - [Professional Services](https://www.pacelabs.com/professional-services/) - [Blog](https://blog.pacelabs.com/keeping-pace-with-analytical-services) ###### 8 min read ## [Pace® News and Views - April 5, 2023](https://blog.pacelabs.com/en/pfas-blog/pace-news-and-views-apr-5-2023) By [Lindsay Boone, M.Sc.](https://blog.pacelabs.com/en/pfas-blog/author/lindsay-boone) on Apr 5, 2023 4:27:50 PM [![](https://blog.pacelabs.com/hubfs/news-1.jpg)](https://blog.pacelabs.com/en/pfas-blog/pace-news-and-views-apr-5-2023) On Tuesday, March 14, 2023, USEPA proposed the first-ever National Primary Drinking Water Regulations (NPDWR) for PFAS. In this edition of Pace® News and Views, we provide some thoughts on the proposed rule and catch up on some other important PFAS developments we think should be on everyone’s radar. ###### Topics: [PFOS](https://blog.pacelabs.com/en/pfas-blog/topic/pfos) [PFBS](https://blog.pacelabs.com/en/pfas-blog/topic/pfbs) [PFOA](https://blog.pacelabs.com/en/pfas-blog/topic/pfoa) [NPDWR](https://blog.pacelabs.com/en/pfas-blog/topic/npdwr) [PFNA](https://blog.pacelabs.com/en/pfas-blog/topic/pfna) [PFHxS](https://blog.pacelabs.com/en/pfas-blog/topic/pfhxs) [GenX Chemicals](https://blog.pacelabs.com/en/pfas-blog/topic/genx-chemicals) [HFPO-DA](https://blog.pacelabs.com/en/pfas-blog/topic/hfpo-da) [CCL6](https://blog.pacelabs.com/en/pfas-blog/topic/ccl6) [Landfills](https://blog.pacelabs.com/en/pfas-blog/topic/landfills) ###### 4 min read ## [Which PFAS will be regulated next?](https://blog.pacelabs.com/en/pfas-blog/which-pfas-will-be-regulated-next) By [Lindsay Boone, M.Sc.](https://blog.pacelabs.com/en/pfas-blog/author/lindsay-boone) on Feb 1, 2023 12:13:46 PM [![](https://blog.pacelabs.com/hubfs/PFAS%20Cloud-01-1.jpg)](https://blog.pacelabs.com/en/pfas-blog/which-pfas-will-be-regulated-next) Lately, we’ve all been watching and waiting for the EPA to publish its proposed MCLs (Maximum Contaminate Levels) for PFOA and PFOS and to designate these two compounds as hazardous substances under CERCLA (the Comprehensive Environmental Response, Compensation and Liability Act). These two actions will have a huge impact on everything from Public Water Systems, to manufacturing, to property sales. ###### Topics: [PFAS](https://blog.pacelabs.com/en/pfas-blog/topic/pfas) [UCMR 5](https://blog.pacelabs.com/en/pfas-blog/topic/ucmr-5) [PFOS](https://blog.pacelabs.com/en/pfas-blog/topic/pfos) [PFOA](https://blog.pacelabs.com/en/pfas-blog/topic/pfoa) [EPA](https://blog.pacelabs.com/en/pfas-blog/topic/epa) [CERCLA](https://blog.pacelabs.com/en/pfas-blog/topic/cercla) [CCL5](https://blog.pacelabs.com/en/pfas-blog/topic/ccl5) [MCLs](https://blog.pacelabs.com/en/pfas-blog/topic/mcls) [IRIS](https://blog.pacelabs.com/en/pfas-blog/topic/iris) ###### 8 min read ## [Pace® News and Views - January 25, 2023](https://blog.pacelabs.com/en/pfas-blog/pace-news-and-views-jan-25-2023) By [Lindsay Boone, M.Sc.](https://blog.pacelabs.com/en/pfas-blog/author/lindsay-boone) on Jan 25, 2023 2:24:32 PM [![](https://blog.pacelabs.com/hubfs/news-1.jpg)](https://blog.pacelabs.com/en/pfas-blog/pace-news-and-views-jan-25-2023) We’re less than a month into the new year, and plenty has happened in the world of PFAS contamination and testing . To help Pace® customers stay up to date, we’ve compiled the latest news and developments we think should be on everyone’s radar. ###### Topics: [PFAS](https://blog.pacelabs.com/en/pfas-blog/topic/pfas) [Drinking Water](https://blog.pacelabs.com/en/pfas-blog/topic/drinking-water) [UCMR 5](https://blog.pacelabs.com/en/pfas-blog/topic/ucmr-5) [PFOS](https://blog.pacelabs.com/en/pfas-blog/topic/pfos) [GenX](https://blog.pacelabs.com/en/pfas-blog/topic/genx) [PFBS](https://blog.pacelabs.com/en/pfas-blog/topic/pfbs) [PFOA](https://blog.pacelabs.com/en/pfas-blog/topic/pfoa) [EPA](https://blog.pacelabs.com/en/pfas-blog/topic/epa) [NPDES](https://blog.pacelabs.com/en/pfas-blog/topic/npdes) [TRI](https://blog.pacelabs.com/en/pfas-blog/topic/tri) [MCLs](https://blog.pacelabs.com/en/pfas-blog/topic/mcls) [WOTUS](https://blog.pacelabs.com/en/pfas-blog/topic/wotus) [Method 1633](https://blog.pacelabs.com/en/pfas-blog/topic/method-1633) ###### 5 min read ## [Pace® News and Views - January 19, 2023](https://blog.pacelabs.com/en/pfas-blog/pace-news-and-views-jan-19-2023) By [Lindsay Boone, M.Sc.](https://blog.pacelabs.com/en/pfas-blog/author/lindsay-boone) on Jan 19, 2023 1:44:17 PM [![](https://blog.pacelabs.com/hubfs/news-1.jpg)](https://blog.pacelabs.com/en/pfas-blog/pace-news-and-views-jan-19-2023) The PFAS contamination, testing, and regulatory landscape has been changing at breakneck speed as the U.S. EPA continues to implement its PFAS Strategic Roadmap for 2021-2024. To help Pace® customers stay up to date, we’re compiling the latest news and developments we think should be on everyone’s radar. ###### Topics: [PFAS](https://blog.pacelabs.com/en/pfas-blog/topic/pfas) [Drinking Water](https://blog.pacelabs.com/en/pfas-blog/topic/drinking-water) [PFOS](https://blog.pacelabs.com/en/pfas-blog/topic/pfos) [PFOA](https://blog.pacelabs.com/en/pfas-blog/topic/pfoa) [EPA](https://blog.pacelabs.com/en/pfas-blog/topic/epa) [PFBA](https://blog.pacelabs.com/en/pfas-blog/topic/pfba) [MCLs](https://blog.pacelabs.com/en/pfas-blog/topic/mcls) ###### 7 min read ## [PFAS Matters - CERCLA](https://blog.pacelabs.com/en/pfas-blog/pfas-matters-cercla) By [Paul Jackson](https://blog.pacelabs.com/en/pfas-blog/author/paul-jackson) on Nov 16, 2022 10:00:00 AM [![](https://blog.pacelabs.com/hubfs/CERCLA%20header.png)](https://blog.pacelabs.com/en/pfas-blog/pfas-matters-cercla)   ###### Topics: [PFAS](https://blog.pacelabs.com/en/pfas-blog/topic/pfas) [PFOS](https://blog.pacelabs.com/en/pfas-blog/topic/pfos) [PFOA](https://blog.pacelabs.com/en/pfas-blog/topic/pfoa) [CERCLA](https://blog.pacelabs.com/en/pfas-blog/topic/cercla) [Superfund](https://blog.pacelabs.com/en/pfas-blog/topic/superfund) ###### 7 min read ## [Pace® News and Views - September 21, 2022](https://blog.pacelabs.com/en/pfas-blog/pace-news-and-views-sept-21-2022) By [Paul Jackson](https://blog.pacelabs.com/en/pfas-blog/author/paul-jackson) on Sep 21, 2022 12:07:04 PM [![](https://blog.pacelabs.com/hubfs/news-1.jpg)](https://blog.pacelabs.com/en/pfas-blog/pace-news-and-views-sept-21-2022) The world of PFAS contamination, testing, and regulation has been moving forward at breakneck speed as the U.S. EPA continues to implement its PFAS Strategic Roadmap for 2021-2024. To help Pace® customers stay up to date, we’re compiling the latest news and developments we think should be on everyone’s radar. ###### Topics: [PFAS](https://blog.pacelabs.com/en/pfas-blog/topic/pfas) [AFFF](https://blog.pacelabs.com/en/pfas-blog/topic/afff) [PFOS](https://blog.pacelabs.com/en/pfas-blog/topic/pfos) [PFOA](https://blog.pacelabs.com/en/pfas-blog/topic/pfoa) [CERCLA](https://blog.pacelabs.com/en/pfas-blog/topic/cercla) [TRI](https://blog.pacelabs.com/en/pfas-blog/topic/tri) ###### 3 min read ## [EPA Issues New Health Advisories for 4 PFAS](https://blog.pacelabs.com/en/pfas-blog/pfas-health-advisories) By [Paul Jackson](https://blog.pacelabs.com/en/pfas-blog/author/paul-jackson) on Jun 16, 2022 4:00:52 PM [![](https://blog.pacelabs.com/hubfs/PFAS%20Health%20Advisories-05.png)](https://blog.pacelabs.com/en/pfas-blog/pfas-health-advisories) In 2016, the U.S. EPA issued drinking water health advisories (HAs) based on available toxicity data for PFOA and PFOS of 70 ppt, individually or combined. While HAs are non-enforceable, many states used the EPA’s guidance to set state-level rules and regulations. Then, in 2021, the EPA revised its risk assessment for PFOA and PFOS and released draft risk values to the EPA’s Science Advisory Board (SAB). ###### Topics: [PFAS](https://blog.pacelabs.com/en/pfas-blog/topic/pfas) [PFOS](https://blog.pacelabs.com/en/pfas-blog/topic/pfos) [GenX](https://blog.pacelabs.com/en/pfas-blog/topic/genx) [PFBS](https://blog.pacelabs.com/en/pfas-blog/topic/pfbs) [health advisories](https://blog.pacelabs.com/en/pfas-blog/topic/health-advisories) [PFOA](https://blog.pacelabs.com/en/pfas-blog/topic/pfoa) [All posts](https://blog.pacelabs.com/en/pfas-blog/all) #### Questions or Comments? ##### ANALYTICAL + ENVIRONMENTAL ANALYTICAL + ENVIRONMENTAL - [Analytical + Environmental](https://www.pacelabs.com/analytical-environmental/) - [Emergency Services](https://www.pacelabs.com/analytical-environmental/emergency-disaster/) - [Statement of Qualifications](https://blog.pacelabs.com/hubfs/Statement%20of%20Qualifications/Pace%20SOQ.pdf) ##### LIFE SCIENCES LIFE SCIENCES - [Life Sciences Page](https://www.pacelabs.com/life-sciences.html) - [CDMO/CRO Services](https://www.pacelabs.com/life-sciences/cdmo-cro-services/) - [Central Laboratory Services](https://www.pacelabs.com/life-sciences/central-laboratory-services/) - [Medical Device](https://www.pacelabs.com/life-sciences/medical-device/) ##### PROFESSOINAL SERVICES PROFESSOINAL SERVICES - [Professional Services](https://www.pacelabs.com/professional-services/) - [Regulatory & Compliance](https://www.pacelabs.com/professional-services/regulatory-and-compliance/) - [Scientific Staff](https://www.pacelabs.com/professional-services/scientific-staff/) - [Instrument Services](https://www.pacelabs.com/professional-services/instruments/) - [Facility Qualification](https://www.pacelabs.com/professional-services/facilities/) ##### OTHER OTHER - [Company](https://www.pacelabs.com/company/) - [Careers](https://www.pacelabs.com/careers/) - [Contact](https://www.pacelabs.com/contact-us/) - [Privacy Policy](https://www.pacelabs.com/legal-notice.html) Copyright © 2026 Pace®