Complex sentence: The Ricolin is the largest tributary of Janon, receiving effluent from the sewage treatment plant in St. Jean Bonnefonds, with about 2,800 inhabitants in 2010.
Split into simpler sentences: The Ricolin is the largest tributary of Janon. It receives effluent from the sewage treatment plant in Saint-Jean-Bonnefonds, which had about 2,800 inhabitants in 2010.