A scenic stretch of the St. Croix River was one of 581 waterways Minnesota has added to its list of waters that don’t meet state pollution standards, according to a report released Wednesday.

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State environmental officials are considering changes to phosphorus regulations on three south-central Wisconsin lakes, a change that could cost wastewater treatment plants across the upper Wisconsin River basin millions of dollars in the coming decades.

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Nearly half of the land around Madison's five big lakes — 28 miles of shoreline, according to the Clean Lakes Alliance — is publicly owned.

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At first glance, it looks as if progress has slowed on keeping phosphorus pollution out of Madison's lakes.

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A U.S.-Canadian agency is considering additional ways to measure the safety of Great Lakes water for drinking and activities such as swimming and fishing.

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A coalition of farmers, conservation groups and others in Dunn County is working to improve the water quality in a watershed encompassing 1,900 square miles in Wisconsin.

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Dane County is accepting applications from local governments for a program that aims to provide money for projects that would help clean up urban runoff pollution.

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In a water cleanup effort more complex than any other in the nation, virtually every community in the 360-square-mile watershed around Madison has agreed to pool resources with farmers to eliminate nutrient-driven weed and algae growths that limit use of lakes and streams.

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The surface of the state's deepest natural lake was flat as Capt. Marty Valasek slowly piloted the 60-foot Escapade dinner boat 150 yards off Green Lake's shoreline.

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Gov. Scott Walker's administration has determined that complying with Wisconsin's phosphorus limits would cause substantial social and economic impacts.

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