Estimated Population Served: 15,600 Summary of findings (August 7 – October 16, 2025): Cocaine (parent) / Benzoylecgonine (metabolite): Concentrations of the parent and metabolite fluctuated but stayed generally at or below regional and national averages. Benzoylecgonine had overall higher concentrations compared to cocaine. Fentanyl (parent) / Norfentanyl (metabolite): Fentanyl concentrations peaked mid-August, and both parent and metabolite concentrations remained below regional and national averages. Methamphetamine (parent) / Amphetamine (metabolite): Parent and metabolite concentrations remained relatively steady with concentrations below regional and national averages. Xylazine (parent) / 4-Hydroxyxylazine (metabolite): Xylazine was detected once in mid-August and 4-hydroxyxylazine was not detected. Trans-3’-Hydroxycotinine (metabolite of nicotine): Trans-3’-Hydroxycotinine concentrations were generally in line with regional and national averages through August but began trending downwards starting in September.