Grassroots environmental justice
Working for the protection of the natural heritage of the Alleghenies.
Helping local people save local land
Allegheny Plateau Audubon Society
Dedicated to Biodiversity
Allegheny Valley Trails Association
Works to acquire abandoned railways in the Allegheny River watershed and rehabilitate them into multipurpose, non-motorized recreational trails.
Audubon Society of Western Pennsylvania
The premier non-profit, environmental education organization in southwestern Pennsylvania.
Serving Butler, Lawrence, Mercer, and Venango Counties
Nature... Essential to our quality of life.
Bowman's Hill Wildflower Preserve
A sanctuary and educational resource for conservation and stewardship.
Preserving art and the environment in the Brandywine Valley since 1967.
Watershed Conservation. Environmental Education.
Brodhead Watershed Association
Protecting Our Water
Environment for the Future
Conservation and education in Bradford County
Central Pennsylvania Conservancy
Conserving natural resources and open space
Public Policy Research Education and Advocacy
Protecting Everyone's Right to Breathe Clean Air
Promoting conservation and restoration of natural resources in central Pennsylvania
Promoting the conservation and preservation of natural, cultural, and historic resources and encouraging prudent land-use practices in the Kiski-Conemaugh River Basin.
Conservation Voters of Pennsylvania
Advocates for sound environmental and conservation policies, works to elect environmentally friendly candidates to public office, and then holds them to their promises.
Dedicated to protecting lands and waters in and near the Tunkhannock Creek Watershed
Cumberland Valley Rails-to-Trails Council
Developing the 11-mile Cumberland Valley Trail, from Shippensburg to Newville, in Cumberland County PA.
Delaware Highlands Conservancy
Conserving our natural heritage & quality of life in partnership with landowners & the communities of the Upper Delaware region.
Delaware Valley Fern & Wildflower Society
Encouraging the enjoyment of ferns and wildflowers.
Dedicated to Mine Land Reclamation, Conservation and Economic Development in the Wyoming Valley of Luzerne County, Pennsylvania
Protecting natural resources through land and water conservation, providing sanctuary for wildlife, and preserving scenic beauty.
Supporting communities threatened by polluting energy and waste technologies.
Protecting our precious natural resources for generations to come.
French & Pickering Creeks Conservation Trust
Preserving and protecting endangered land and natural resources in northern Chester County.
French Creek Valley Conservancy
Dedicated to maintaining and enhancing the exceptional water quality, natural habitat, biological diversity and recreational opportunities of the French Creek Watershed in Northwest Pennsylvania.
Friends of Allegheny Wilderness
Fostering an appreciation of wilderness values and benefits, and working with local communities to ensure that increased wilderness protection is a priority of the stewardship of the Allegheny National Forest.
Friends of the Chemung River Watershed
Rich history and beauty.
A volunteer organization, formed by local citizens
Preserving the natural beauty and wildness of the Wissahickon Valley
Friends of White Clay Creek State Park
Protection and preservation of the park and surrounding creek valley
Dedicated to the preservation of the White's Woods Nature Center as a natural area for future generations.
Greater Wyoming Valley Audubon Society
Membership area includes most of Luzerne and Wyoming Counties.
Conserving birds of prey worldwide by providing leadership in raptor conservation science and education, and by maintaining Hawk Mountain Sanctuary as a model observation, research and education facility.
Preserving our natural and historic heritage.
Working for conservation in western Allegheny County
Sharing a vision of clean water, beautiful vistas and special places in the Raccoon Creek Watershed preserved forever.
Empowering Pennsylvanians to make our communities clean and beautiful.
Providing, preserving, protecting and promoting recreational hiking trails and hiking opportunities in Pennsylvania.
Nature preserve, ecological field research station and public environmental education facility located in the Pocono Mountains of northeastern Pennsylvania
Lackawanna River Corridor Association
Involving citizens of our watershed with conservation and stewardship of the River, its tributaries and water resources
Dedicated to the identification, conservation and protection of the Lake Erie region’s unique natural and cultural resources
Dedicated to the preservation of Lancaster County's (PA) rapidly diminishing supply of natural land
Land Conservancy of Adams County
Preserving the rural lands and character of Adams County, Pennsylvania
Protecting cultural, historical & environmental resources
Allentown, Bethlehem, Easton area
Working to protect and preserve significant ecological sites in its home region for present and future generations.
London Britain Township Land Trust
Preservation, conservation, and stewardship of historic sites and open space, including important agriculturally productive lands and natural areas.
Preserving the natural and historic resources of Lower Merion, Narberth, and the surrounding area.
A chapter of the National Audubon Society with members in Lycoming and Clinton Counties, Pennsylvania.
Land Preservation and Environmental Education
Moms Clean Air Force - Pennsylvania Chapter
Moms working in Pennsylvania to fight for clean air and a stable climate.
Working hard to protect Mt. Nittany from commercial and residential development
Protects the forests, fields, wetlands, and streams that are essential to the sustainability and quality of life in eastern Pennsylvania and southern New Jersey.
Nature Conservancy - Pennsylvania Chapter
Honoring the importance of home.
Helping landowners conserve their property and helping communities develop smart growth strategies for the benefit of their citizens.
Northcentral Pennsylvania Conservancy
Conserves working farms and forests by partnering with private landowners on conservation easements and land acquisitions.
Open Land Conservancy of Chester County
Preserving Open Space In Our Community
Statewide, citizen-based environmental advocacy
Protecting and preserving the natural, agricultural, and historic resources of Pennsbury Township.
Connecting people with nature
Pennsylvania Environmental Council
Conservation through Cooperation
Pennsylvania Environmental Defense Foundation
Litigating for Our Environment
Pennsylvania Native Plant Society
Advocating conservation of native plants and their habitats and promoting the increased use of native plants in the landscape.
Pennsylvanians Against Fracking
A statewide coalition of groups united in the mission of achieving a ban on fracking in the commonwealth.
Pennsylvania Resources Council
Working to protect the environment since 1939.
Pennypack Ecological Restoration Trust
A nonprofit conservancy headquartered in Huntingdon Valley, Pennsylvania, 15 miles northeast of Philadelphia.
Serving Erie, Crawford and Warren Counties
Quittapaphilla Audubon Society
Serving Lebanon County and parts of Dauphin, Berks, and Lancaster Counties
Preserving our quality of life
SEEDS - Sustainable Energy Education and Development Support
Promotes energy efficiency, renewable energy and sustainable living.
Observe and Conserve. Clarion, Forest, Jefferson and Venango Counties
Sierra Club - Pennsylvania Chapter
The only member-led statewide environmental organization in Pennsylvania.
Our region. Our resources. Our future.
Appreciating birds and the natural world of Southwestern Pennsylvania.
Promoting appreciation and stewardship of the local natural environment through education and active participation.
Washington County Watershed Alliance
Represents the upper Chartiers Creek Watershed in Washington County, Pennsylvania.
Protecting Pennsylvania’s special places
Western Pennsylvania Conservancy
Enriching your relationship with the natural world since 1932
Dedicated to acquiring and preserving rural and rustic lands
Creating lasting connections to nature since 1973.
Working to protect the rural beauty of the 28,000 acres surrounding Willistown, Pennsylvania.
We inspire and engage diverse communities of people to protect, steward, and enjoy the land and waterways of the Wissahickon Valley.
Philadelphia and Montgomery Counties