Crozer Health's closing is already impacting emergency medical services in Delaware County, with first responders sounding the alarm.

Crozer-Chester Medical Center is home to the Crisis Center, which provides critical round-the-clock intervention and treatment to adults and children experiencing mental health episodes. The flagship hospital is also home to the Community Campus, which delivers outpatient drug and alcohol treatment, along with mental health care.

The closure of Crozer Health will have a devastating impact on the local economy and its businesses, according to the Delaware County Chamber of Commerce. Here's what we know.