While many Maine lakes are getting plenty of action this summer from swimmers and boaters, biologists have spotted something else that’s no fun at all. Some lakes are turning green and not in a good way. State biologists were on East Pond in Smithfield Thursday where they say the color change is being caused by algae growth. The warm temperatures and amount of phosphorus that’s getting into the water are contributers. Barbara Welch says East Pond is one of the worst cases in the state right now. Soil erosion is a big part of the problem. Welch says, “The fertilizer, dog waste, washing away the streets, oil, grease, the dirt. It’s getting into the lakes and those are all really high in phosphorus.” Biologists are encouraging people who live along the lake and in a watershed to take action to help clean up the water. Experts say better water quality can be accomplished by: preventing soil erosionusing trees and shrubs to filter runoffusing less fertilizer and pesticidesmaintaining septic systemsdisposing of chemicals properly”It’s going to take the actions of everybody who lives in the watershed, not just along the shore, but wherever water drains into the lake.” Welch says.