12:56 PM

By Eric Russell erussell@pressherald.com Staff Writer

Public beaches along Maines coastline likely will be flooded with visitors this weekend as temperatures are expected to creep into the 90s.

click image to enlarge

More than two-thirds of the 61 beaches monitored by the DEP had no water quality issues in 2011, an improvement from 2010, when almost half of all beaches had at least one advisory.

John Patriquin / Staff Photographer

The ocean water at those 61 beaches, which collectively stretch more than 30 miles, will be the cleanest and safest it has been in four years, according to data released by the Maine Department of Environmental Protection.

The Maine Healthy Beaches program monitors recreational water quality as a way to protect public health. Its funded by the federal Environmental Protection Agency and receives staff support from the University of Maine Cooperative Extension/Sea Grant.

From Memorial Day through Labor Day, water samples are analyzed every week for the enterococcus bacteria, which indicates the presence of fecal contamination from humans and animals. If bacteria levels exceed limitations sets by the EPA, beach managers will post an advisory. If levels are extremely high, beaches have to be closed.

Last year, the program found that beach advisory days had declined by nearly 50 percent from the previous summer. More than two-thirds of the 61 beaches had no water quality issues in 2011, an improvement from 2010, when almost half of all beaches had at least one advisory.

More here:

DEP says Maine beaches cleanest in years