Per- and polyfluoroalkyl substances (PFAS) are turning up across the Golden State. The State Water Board released preliminary data in March 2020 which suggests around half of the 600 public water supply wells near landfills, military installations, and airports have detections of PFOA, PFOS, or other PFAS.
Life in Plastic: Determining Microplastics in Drinking Water
One microcosm of this public health concern has been the presence of microplastics in the environment, and the potential for these tiny particles to make their way into our food and water. Microplastics fall into two main categories—those that are manufactured as additives or for use in manufacturing and those that come from the degradation or breakdown of larger plastic particles.
Safe Recycled Water in a Petri Dish?
What makes bioanalytical screenings of interest are their sophisticated yet targeted approach to screening recycled water. Rather than requiring laboratory professionals to test for each individual contaminant to determine presence and approximate risk, bioassays screen for total bioactivity for a given pathway or mode of action, allowing analysts to characterize potential cumulative effects on the organisms without necessarily needing to know all the components of the samples. They are a meaningful counterpart to common testing methods, as they account for the fact that contaminants often work together additively, synergistically, or antagonistically to produce an effect that is harmful to humans and the environment.
DDW Sets New Response Levels for PFOA and PFOS
Yesterday, the State Water Resources Control Board (SWRCB) Division of Drinking Water (DDW) issued a press release regarding new Response Levels (RL) for PFOA and PFOS.
The RL for Perfluorooctanoic acid (PFOA) is now set at 10 parts per trillion (ppt)
The RL for Perfluorooctanoic sulfonate (PFOS) is now set at 40 ppt.
Previously California RL’s were set at the federal level of 70 ppt for PFOA and PFOS combined.
Babcock Labs is DoD AND California Accredited: PFAS Determinations in Non-Potable Water & Solids
On December 2, 2019, Babcock Laboratories, Inc. joined an elite group of laboratories in California accredited to analyze all PFAs by Department of Defense Quality Systems Manual (DoD QSM - version 5.1 or newer). On January 9th the CA Environmental Laboratory Accreditation Program (CA ELAP) added PFAS to Babcock Labs’ accreditation for analysis of Semi-volatile Organic Constituents in non-potable water—Field of Testing (FOT) 111. Babcock became one of a handful of laboratories in the State with the proper CA ELAP accreditation for PFAS required for all State regulatory work.
PFAS in CA: Phase I Results
This month the State Water Resources Control Board posted the first results of testing for perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) for nearly 600 drinking water supply wells. This testing was performed as part of a comprehensive effort to assess the presence of harmful per- and polyfluoroalkyl substances (PFAS)—coined “forever chemicals—in water systems and groundwater statewide.