When scientists study a lake, they usually expect more people to mean more phosphorous in the water, often from fertilizer, detergents, septic systems, dog poop, and other human-related sources. And more phosphorous can mean more problems for water quality, as nutrient-hungry algae thrive when there is more phosphorus to feed them.
But between 1998 and 2022, something different happened in Lake Washington, even as the surrounding population boomed. Read more.
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