Pokemon the Series Season 19 Episode 15 A Watershed Moment!

Ash and his friends decide to take a break and enjoy a relaxing day at a nearby river. As they play in the water, they notice that the river is becoming polluted and filled with garbage. They quickly realize that the nearby town is dumping their waste into the river, causing harm to the Pokemon and other wildlife that reside there.

Determined to make a difference, Ash and his friends team up with a passionate local activist named Zipp to clean up the river and stop the town's illegal dumping. Along the way, they encounter a group of Pokemon who have been affected by the pollution and are in need of rescue.

With the help of their own Pokemon and Zipp's knowledge of the river, Ash and his friends work together to create a plan to stop the pollution and save the affected Pokemon. Through their efforts, they hope to inspire change in the town and encourage others to take action to protect the environment.

As they work towards their goal, Ash and his friends also learn important lessons about the importance of taking care of the environment and working together to make a positive impact.

Overall, "A Watershed Moment!" is a heartwarming episode that highlights the importance of environmental conservation and the power of teamwork. It also serves as a reminder that small actions can make a big difference in protecting the world around us.