From pollution to fracking to dams and dredging, this year we’re highlighting issues that have a direct impact on our clean water, public health, and wildlife.

Will you send a message to Congress urging them to protect clean water? Take Action »

The Potomac River provides drinking water for over 4 million people in Maryland, Virginia, and the District. Enough so that the odds are pretty good that if you drank a glass of water or took a shower this morning, you were using water from the Potomac.

But it is threatened by pollution from agricultural and urban runoff which will only get worse if Congress rolls back national clean water protections. Take action to protect it »

Now is the time for you to get involved in protecting your water supply, and let public officials know that clean water is so important!

Help get the word out about America’s Most Endangered Rivers, and be part of the effort to protect our rivers and our clean water.

Here's how you can help »