E. coli or enterococci, which indicate fecal matter contaminating water, were detected at swim spots in New York state, Massachusetts, Michigan and elsewhere, authorities said.

Health officials issue warnings as bacteria and stormwater runoff contaminate beaches nationwide, closing popular swimming locations before the July 4th holiday.

Heading into the holiday weekend, 19 swimming spots in Vermont are under advisories for high cyanobacteria levels. Here's the full list. The following beaches and other swimming spots in Vermont are currently under bacteria alerts: Beaches can only become safe for swimming when their bacteria levels are back within the safe range,