Three things are poisoning the lake.
Lake Winnipeg isn't dying on its own. It's being poisoned. It was named the most threatened lake in the world in 2013 by the Global Nature Fund, and the phosphorus loading has still not meaningfully declined. Phosphorus and nitrogen pour in through the Red River from agricultural runoff and wastewater. The highest concentrations hit the south basin near the river's mouth — the Red is the single biggest pipe feeding nutrients into the lake. The result: massive, toxic algal blooms that kill fish, threaten the fishery, and make the water unsafe to swim in.
Raw sewage spills into the river regularly. The 2024 Fort Garry Bridge pipe failure dumped 230 million litres. The 2002 North End plant failure dumped 427 million litres — still the largest on record. Winnipeg's sewage system overflows constantly, releasing billions of litres into the rivers that feed the lake.
Macro-debris — cars, tires, shopping carts, mattresses — sits on the riverbed, leaking motor oil, battery acid, heavy metals, and microplastics as it breaks down. We've pulled pushing 10 cars out of the river recently. Working alongside Submerged Underwater Services, we even recovered a stolen Toyota near Netley Creek that had been sitting at the bottom for almost two years, still full of mud, debris, and a purse. If we don't pull it out now, it breaks down. And once it breaks down, you can't get it out.