Once again, lower than average winter rainfall has paired with exceptionally hot summer months and set California up for a disastrous wildfire season with the potential to surpass that of the historic 2018 fire season. Gov. Gavin Newsom announced on Monday that fires had burned through more than 1.4 million acres burned so far in 2020. That’s already well ahead of this time in 2019, when Cal Fire reports just shy of 28,060 acres burned.
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.
The Dog Days of Summer Proving Toxic to Pets
Harmful algal blooms made it into mainstream news this month following the death of dogs that reportedly that came into contact with the toxic blue-green algae that commonly grows in lakes and ponds during hot summer months.
The recent canine deaths and warning signs posted near water bodies from North Carolina to California demonstrate that current conditions are ideal for rapid cyanobacterial growth.