ANS protects land and water through policy and advocacy. Check out our current campaigns, letters & testimony, and opportunities to TAKE ACTION on our Conservation Blog:


Preventing Polluted Runoff: ANS works with Montgomery, Prince George’s, and Fairfax Counties, as well as DC, to help them develop and implement their plans for preventing polluted runoff.

In coalition with a broad network of partner organizations, we meet with the environmental agencies in each jurisdiction, advise them on how to meet their Clean Water Act permits, and help them design their programs to best reach neighborhoods and communities. We also meet with and work to influence state- and federal-level decision makers in agencies and the legislatures to improve the laws and policies that govern how development is managed!


Campaigning for Conservation Victories: ANS has a storied history as the oldest conservation organization in the Washington, DC region.

Today, we continue that tradition of advocacy by focusing on protecting the land and water of our local region.

We helped pass the Montgomery County pesticide lawn ban bill, advocated for transit-oriented development around Tyson’s Corner and, most recently, helped lead the coalition to Save Ten Mile Creek. Now we are keeping a close eye on the proposed Purple Line in Montgomery and Prince George’s Counties to ensure that it meets stringent county standards for managing polluted runoff into streams—if it gets built, it should be a Deep Green Purple Line.

ANS also protects land and water through community science, and by training people to be advocates and stewards for clean water.

RSS Recent Posts on the Conservation Blog

  • Protect the ecology of Fairfax County’s Angelico Branch July 12, 2019
    A re-development has been proposed for a property in Vienna that has advocates concerned about the implications for protected areas in Fairfax County. Today, this site is 6.7 acre lot with a single-family home in a wooded, residential part of the county. Part of the site has a conservation easement… Continue reading
    Renee Grebe
  • Nature-Friendly Ways to Combat Mosquitoes and Ticks July 1, 2019
    Guest post by Jane Houlihan, ANS member and Research Director, Healthy Babies Bright Futures  If mosquitoes are taking over your yard, consider doing battle without using yard-wide sprays. The twice-monthly spray services from mosquito control companies may be effective at killing mosquitoes and ticks, but they aren’t the best choice… Continue reading
    ANS Conservation Volunteer
  • What Lives in Long Branch? ¿Que vive en Long Branch? June 26, 2019
     (English)ANS and community partners in the Long Branch community of Silver Spring, MD, have been hosting a series of community engagement events. At our events, families near the Long Branch stream corridor have the opportunity to interact with their local stream in a new and innovative way. During the events, families… Continue reading
    Denisse Guitarra