Data / Nonprofits / Wisconsin / Milwaukee / Environment
Environment nonprofits in Milwaukee, WI: 49 registered with the IRS
49 environment nonprofits are registered with the IRS in Milwaukee, WI, 46 of them 501(c)(3) charities; the 26 that report revenue took in $26.5 million. The largest by revenue: Urban Ecology Center Inc ($8.4 million), Friends of Schlitz-Audubon Center Inc ($4.6 million), Milwaukee Parks Foundation ($1.6 million).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|
| Urban Ecology Center Inc | 501(c)(3) | 1992 | $8.4 million | $41.2 million | 2025-08 |
| Friends of Schlitz-Audubon Center Inc | 501(c)(3) | 1977 | $4.6 million | $8.8 million | 2025-06 |
| Milwaukee Parks Foundation | 501(c)(3) | 2020 | $1.6 million | $1.1 million | 2025-12 |
| Milwaukee Water Commons Inc | 501(c)(3) | 2019 | $1.5 million | $1.6 million | 2024-12 |
| Fund for Lake Michigan Inc | 501(c)(3) | 2022 | $1.4 million | $801,568 | 2025-12 |
| Reflo | 501(c)(3) | 2015 | $1.4 million | $1.1 million | 2024-12 |
| Harbor District Inc | 501(c)(3) | 2015 | $1.1 million | $1.8 million | 2025-06 |
| Milwaukee Riverkeeper | 501(c)(3) | 1996 | $974,877 | $621,675 | 2025-09 |
| Midwest Bikeshare Inc | 501(c)(3) | 2013 | $870,629 | $1.2 million | 2024-12 |
| Groundwork Milwaukee Inc | 501(c)(3) | 2007 | $570,865 | $267,171 | 2024-12 |
| Southeastern Wisconsin Watersheds Trust Inc | 501(c)(3) | 2010 | $498,776 | $317,182 | 2024-12 |
| Forest Home Historic Preservation Association Inc | 501(c)(3) | 1986 | $483,947 | $1.2 million | 2024-12 |
| Victory Garden Initiative Inc | 501(c)(3) | 2013 | $406,023 | $491,709 | 2025-12 |
| Bus for Outdoor Access and Teaching | 501(c)(3) | 2018 | $374,506 | $151,244 | 2025-11 |
| Citizens for A Better Wisconsin Inc | 501(c)(4) | 2010 | $355,000 | $50,104 | 2025-12 |
| Wastecap Resource Solutions Inc | 501(c)(3) | 1998 | $318,727 | $260,987 | 2024-12 |
| Southeastern Wisconsin Invasive Species Consortium Inc | 501(c)(3) | 2010 | $311,076 | $85,055 | 2025-12 |
| Freshair Collective | 501(c)(3) | 2023 | $249,706 | $94,219 | 2025-12 |
| Wisconsin Clean Cities-Southeast- Area Inc | 501(c)(3) | 1996 | $240,945 | $109,129 | 2025-12 |
| Fair Rates for Wisconsin Dairyland Inc | 501(c)(4) | 2016 | $216,271 | $50,756 | 2025-05 |
| Keep Greater Milwaukee Beautiful Inc | 501(c)(3) | 1984 | $150,920 | $65,603 | 2025-12 |
| Nearby Nature Milwaukee | 501(c)(3) | 2023 | $130,461 | $216,788 | 2025-12 |
| River Revitalizational Foundation Inc | 501(c)(3) | 1997 | $126,935 | $0 | 2024-12 |
| Wisconsin Association for Environmental Education Inc | 501(c)(3) | 1982 | $99,775 | $114,610 | 2024-12 |
| Uec Supporting Organization Inc | 501(c)(3) | 2024 | $55,840 | $5.6 million | 2025-08 |
| Uec Land Corporation | 501(c)(3) | 2014 | $13,750 | $2.5 million | 2025-08 |
| Alliance for Water Stewardship North America Inc | 501(c)(3) | 2011 | $0 | $0 | 2024-12 |
| Bio Sirens the Biodiversity Coaltio N of the Americas Inc | 501(c)(3) | 2026 | | | |
| Carter Can Collect Community Initia Tive | 501(c)(3) | 2026 | | | |
| Climate Jobs Wisconsin | 501(c)(3) | 2026 | | | |
| Climate Jobs Wisconsin Action Fund Inc | 501(c)(4) | 2026 | $0 | $1 | 2025-12 |
| Cole Lead Safe and Healthy Homes Project Inc | 501(c)(3) | 2024 | $0 | $0 | 2023-12 |
| Crescent Cactus Corporation | 501(c)(3) | 2024 | | | |
| Earth Conclave Inc | 501(c)(3) | 1994 | $0 | $0 | 2024-10 |
| Fair Future Movement Inc | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Friends of Back Bay Park LTD | 501(c)(3) | 2015 | | $11,005 | 2024-12 |
| Juneau Park Friends Inc | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Kompost Kids Inc | 501(c)(3) | 2025 | | | |
| Lake Julia Association Inc | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Lynx Lake Conservation Foundation Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Milwaukee Bonsai Society Inc | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| North Avenue Community Ambassador Program | 501(c)(3) | 2026 | | | |
| Rock the Green Inc | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Second Chance for A Better Tomorrow | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| South Shore Park Watch | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Southeast Wisconsin Master Gardeners Inc | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Water Energy Forward Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Wisconsin Orchid Society Inc | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Wisconsin for Environmental Justice | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
Other causes in Milwaukee, WI
Every nonprofit in Milwaukee, WI · Environment nonprofits across the state · Nonprofits in every city of the state
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.