San Diego County started utilizing a DNA-based ocean-water testing expertise Wednesday, meant to supply quicker outcomes and earlier warnings when micro organism attain unhealthy ranges alongside the county’s coast.
County staff and elected officers gathered in Imperial Seashore Wednesday morning to unveil the expertise.
County Board of Supervisors Vice Chair Nora Vargas stated the county plans to broaden its use of the droplet-digital polymerase chain response testing expertise to greater than 70 miles of shoreline the county samples and exams to guard the general public.
“I’m completely satisfied to announce with in the present day’s sampling, San Diego turns into the primary coastal county within the nation to implement the ddPCR methodology for seaside water sampling,” she stated. “Quicker outcomes are going to permit the county to difficulty or elevate seaside advisories on the identical day samples have been collected. And it reduces the time the general public may unknowingly be in danger and when the water is contaminated.”
The brand new system will let the county pattern seaside water within the morning, get outcomes and warn the general public by the afternoon as a substitute of the following day.
Imperial Seashore’s waters usually endure from excessive micro organism ranges largely on account of sewage runoff from neighboring Tijuana and water contact closures are routinely issued. The issue generally extends up Silver Strand towards Coronado.
Officers stated the DNA-based system is extra delicate to micro organism ranges than the older methodology, which required rising bacterial cultures from water samples in petri dishes. The county’s Public Well being laboratory and the state carried out a side-by-side research of how the DNA testing in comparison with the petri dish system in 2019.
In February, the California Division of Public Well being gave the brand new system its ultimate laboratory approval.
Metropolis Information Service contributed to this text.