Data / Nonprofits / Texas / Houston / Environment
Environment nonprofits in Houston, TX: 155 registered with the IRS
155 environment nonprofits are registered with the IRS in Houston, TX, 146 of them 501(c)(3) charities; the 55 that report revenue took in $174.3 million. The largest by revenue: Buffalo Bayou Partnership ($31 million), Coastal Conservation Association ($27.7 million), Memorial Park Conservancy Inc ($22 million).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Buffalo Bayou Partnership | 501(c)(3) | 1986 | $31 million | $127.1 million | 2024-12 |
| Coastal Conservation Association | 501(c)(3) | 1978 | $27.7 million | $46.8 million | 2024-12 |
| Memorial Park Conservancy Inc | 501(c)(3) | 2000 | $22 million | $57.6 million | 2025-05 |
| Coastal Prairie Conservancy | 501(c)(3) | 1992 | $19.9 million | $46.6 million | 2024-12 |
| Hermann Park Conservancy | 501(c)(3) | 1991 | $15.5 million | $65.9 million | 2025-06 |
| Armand Bayou Nature Center Inc | 501(c)(3) | 1974 | $7.8 million | $8.9 million | 2024-12 |
| Houston Botanic Garden | 501(c)(3) | 2002 | $7.6 million | $31.9 million | 2024-12 |
| Houston Audubon Society | 501(c)(3) | 1970 | $5.3 million | $17.9 million | 2025-06 |
| Houston Arboretum & Nature Center | 501(c)(3) | 1967 | $4.4 million | $8.2 million | 2025-06 |
| Consumer Energy Alliance Inc | 501(c)(4) | 2008 | $3.5 million | $1.8 million | 2025-12 |
| Cca Texas Fund | 501(c)(3) | 1990 | $3.1 million | $20.7 million | 2024-12 |
| Blockchain for Energy Inc | 501(c)(6) | 2022 | $2.5 million | $826,235 | 2024-12 |
| Urban Harvest Inc | 501(c)(3) | 1996 | $2.4 million | $3 million | 2025-12 |
| Air Alliance Houston | 501(c)(3) | 1995 | $2 million | $3.9 million | 2025-06 |
| Willow Waterhole Greenspace Conservancy Inc | 501(c)(3) | 2001 | $1.6 million | $3.6 million | 2024-12 |
| Evolve Houston | 501(c)(3) | 2020 | $1.4 million | $1.4 million | 2024-12 |
| Bayou Bend Gardens Endowment | 501(c)(3) | 1966 | $1.4 million | $12.3 million | 2025-06 |
| Houston Parks Board Foundation | 501(c)(3) | 2011 | $1.4 million | $8.1 million | 2025-06 |
| Houston Wilderness Inc | 501(c)(3) | 2003 | $1.1 million | $1 million | 2025-06 |
| New Economy of Working Houston | 501(c)(3) | 2023 | $955,379 | $1 million | 2024-12 |
| River Oaks Garden Club | 501(c)(3) | 1962 | $899,674 | $2.6 million | 2025-05 |
| Texas Environmental Justice Advocacy Services | 501(c)(3) | 2006 | $877,638 | $3.3 million | 2025-12 |
| Garden Club of Houston | 501(c)(3) | 1982 | $839,305 | $1.1 million | 2025-05 |
| Coalition for Environment Equity and Resilience | 501(c)(3) | 2024 | $807,750 | $842,311 | 2024-12 |
| National Association of Disability | 501(c)(6) | 2001 | $760,251 | $840,297 | 2025-12 |
| Designer Diva Resale Inc | 501(c)(3) | 2022 | $744,007 | $847,330 | 2024-12 |
| Bayou City Waterkeeper Inc | 501(c)(3) | 2009 | $721,185 | $752,601 | 2024-12 |
| Building Conservation Trust | 501(c)(3) | 2013 | $696,157 | $4.1 million | 2024-12 |
| Bcarbon Inc | 501(c)(3) | 2021 | $673,504 | $816,515 | 2024-12 |
| Texas Health and Environment Alliance Inc | 501(c)(3) | 2016 | $579,887 | $216,878 | 2025-12 |
| Consumer Energy Education Foundation | 501(c)(3) | 2010 | $577,690 | $78,710 | 2025-12 |
| Scenic Houston Inc | 501(c)(3) | 2021 | $489,666 | $766,502 | 2025-12 |
| Blue Sky Maritime Coalition Inc | 501(c)(3) | 2022 | $440,840 | $288,373 | 2025-12 |
| Forest North Community Improv Association | 501(c)(4) | 2025 | $399,308 | $444,878 | 2025-12 |
| Will Erwin Headache Research Foundation | 501(c)(3) | 2014 | $382,577 | $104,867 | 2024-12 |
| Bloomagain Houston | 501(c)(3) | 2023 | $219,705 | $11,910 | 2025-12 |
| Greens Bayou Corridor Coalition | 501(c)(3) | 2007 | $178,177 | $729,655 | 2024-12 |
| Houston Botanic Garden Endowment Fund | 501(c)(3) | 2024 | $154,834 | $150,049 | 2024-12 |
| Biowell Inc | 501(c)(3) | 2023 | $128,211 | $6,456 | 2025-12 |
| Emission Reduction Credit Corporation of the Gulf Coast | 501(c)(3) | 1995 | $127,329 | $1.2 million | 2026-03 |
| Ohba - Organic Educators | 501(c)(3) | 2013 | $123,133 | $59,704 | 2024-12 |
| Bird Endowment | 501(c)(3) | 1998 | $117,628 | $24,343 | 2025-12 |
| Fort Bend Green | 501(c)(3) | 2009 | $107,522 | $374,124 | 2025-10 |
| With Heart | 501(c)(3) | 2024 | $102,161 | $53,570 | 2023-12 |
| Scenic Galveston Incorporated | 501(c)(3) | 1997 | $91,190 | $3.9 million | 2024-12 |
| Texas Conservation Fund | 501(c)(3) | 1991 | $87,690 | $73,571 | 2024-12 |
| Citizens Environmental Coalition Educational Fund | 501(c)(3) | 1971 | $72,476 | $44,499 | 2024-12 |
| Clinic Access Support Network | 501(c)(3) | 1994 | $67,649 | $2.3 million | 2025-06 |
| Allies in Energy | 501(c)(3) | 2025 | $67,380 | $38,609 | 2025-12 |
| Harris County Master Gardener Association Inc | 501(c)(3) | 2007 | $54,907 | $143,548 | 2025-12 |
| Southeast Section of the Water Environment Association of Texas | 501(c)(3) | 2025 | $49,596 | $55,847 | 2025-12 |
| Texas Coastal Exchange | 501(c)(3) | 2019 | $12,460 | $39,965 | 2025-12 |
| Memorial Park Conservancy Endowment | 501(c)(3) | 2012 | $9,155 | $428,360 | 2025-05 |
| Rioraiz Inc | 501(c)(3) | 2022 | $3,400 | $8,828 | 2025-12 |
| Save Buffalo Bayou | 501(c)(3) | 2015 | $759 | $8,693 | 2025-12 |
| A Plant in Every Home | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Academy for Global Environmental Sustainability Inc | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Air & Waste Management Association Gulf Coast Chapter | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Alliance for Conservation Easements | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| American Rose Society | 501(c)(3) | 1983 | $0 | $0 | 2025-12 |
| Aquaivia | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Avae | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Bay Area Coastal Protection Alliance | 501(c)(3) | 2014 | $0 | $8,436 | 2024-12 |
| Bayou Barrels Foundation | 501(c)(3) | 2026 | |||
| Bayou City Initiative | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Bayou District Incorporated | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Be the Spark Inc | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Blackwood Educational Land Institute | 501(c)(3) | 2000 | $233,971 | 2024-12 | |
| Braeswood Place Community Garden | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Cambium Initiative | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Chinese American Physicians Club of Houston | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Clean the Block | 501(c)(3) | 2025 | |||
| Coastal Beach & Bay Foundation | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Coastal Envirocation | 501(c)(3) | 2026 | |||
| Coastal Preservation and Restoration | 501(c)(3) | 2025 | |||
| Connect Ministry | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Conservative Conservation | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Davis & Clark Communal Endeavors CDC | 501(c)(3) | 2024 | $1 | 2025-12 | |
| Deepwater Innovation Group | 501(c)(6) | 2024 | $0 | $0 | 2023-12 |
| Elite Living Supportive Services | 501(c)(3) | 2017 | |||
| Energy 4 Humanity | 501(c)(3) | 2022 | $103,719 | 2025-12 | |
| Environmental Enhancement Group | 501(c)(3) | 1995 | $625,000 | 2024-12 | |
| Ewastefighters Inc | 501(c)(3) | 2025 | $0 | $1 | 2025-12 |
| First Ward Civic Council Inc | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Friends of Macgregor Park | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Friends of Mandell Park | 501(c)(3) | 2005 | $0 | $0 | 2025-06 |
| Furbaby Haven Inc | 501(c)(3) | 2022 | $0 | $0 | 2024-06 |
| Get Outside Alliance | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Ghost Net and Marine Debris Removal Initiative GN | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Global Institute for Truth & Awareness | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Grass Monkey Recycling | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Green Door Inc | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Grow By Rooted Treasures Inc | 501(c)(3) | 2026 | |||
| Gsop Climate Collaboration | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Herb Society of America South Texas Unit | 501(c)(3) | 1992 | $0 | $0 | 2026-06 |
| Hilshire Village Beautification Fun D | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Home Solar Advocates | 501(c)(3) | 2025 | |||
| Houston Area Urban Forestry Council | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Houston Clean City Commission Inc | 501(c)(3) | 1977 | $0 | $0 | 2026-06 |
| Houston Energy Forum | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Houston Tree Initiative | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Houston Urban Growers | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Innercity Innovations Inc | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Lifting Africa | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Lone Star Hiking Trail Foundation | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Lower Brazos River Conservancy | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Madres Del Parque Inc | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Marine Aquarium & Reef Society of Houston Inc | 501(c)(7) | 2004 | $0 | $0 | 2024-12 |
| Mvula | 501(c)(3) | 2026 | |||
| Neighborhoods To Trails - Southwest Inc | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Ninas Con Alas | 501(c)(3) | 2026 | |||
| North Hobby Civic Association | 501(c)(4) | 2017 | $0 | $0 | 2025-12 |
| Ocean Music Action | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Oil Anew Inc | 501(c)(3) | 2024 | |||
| One Clean Earth Society | 501(c)(3) | 2023 | $3,060 | 2025-09 | |
| Our Garden Our Forest | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Perry Harrell Land Institute | 501(c)(3) | 2025 | |||
| Port of Houston Partners in Maritime Education Inc | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Producer Accountability for Carbon Emissions Fund | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Purehabitat Initiative | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Reef Without Borders | 501(c)(3) | 2026 | |||
| Regrowing Earth | 501(c)(3) | 2026 | |||
| Reloop Initiative | 501(c)(3) | 2026 | |||
| Repurposed Assets Inc | 501(c)(3) | 2022 | $0 | $820 | 2023-12 |
| Resuable Bags for All | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Rooted in Houston | 501(c)(3) | 2025 | $0 | $0 | 2026-04 |
| S for Sustainability | 501(c)(3) | 2026 | |||
| San Antonio Overland Inc | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Save the Lampasas 25 Inc | 501(c)(3) | 2026 | |||
| Shady Acres Civic Club | 501(c)(4) | 2025 | |||
| Society for the Advancement of Floral Design | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Sonlight Water Foundation | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Southern Biosafety Association | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Sprouts Edu | 501(c)(3) | 2024 | $0 | $1 | 2025-12 |
| Stopgreenhouselandfill | 501(c)(3) | 2018 | $0 | $0 | 2023-12 |
| Strategic Predesign Association | 501(c)(3) | 2026 | |||
| Sun Rise Institute | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Sunnyside Community Energy Group | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Sustain Ability Inc | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Texas Environmental Research Consortium | 501(c)(3) | 2003 | $0 | $0 | 2023-12 |
| Texas Garden Clubs Inc | 501(c)(3) | 1993 | $0 | $0 | 2025-05 |
| Texas Garden Clubs Inc | 501(c)(3) | 1993 | $0 | $0 | 2026-05 |
| Texas Gulf Coast Fern Society | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Texas Master Naturalist Gulf Coast Chapter Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| The Houston Orchid Society Inc | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Trace Herbal Soap Development Foundation | 501(c)(3) | 2024 | |||
| Tree Peace | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Universal Scientific Education & Research Foundation | 501(c)(3) | 2024 | $1 | 2024-12 | |
| Vision in Joppa Outreach | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| We Can Africa | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| West University Garden Club | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Westbury Area Improvement Corp | 501(c)(3) | 1992 | $0 | $0 | 2025-12 |
| Westview Landscaping Inc | 501(c)(4) | 2011 | $0 | $0 | 2025-12 |
| William B Harrison Foundation | 501(c)(3) | 2012 | $5.5 million | 2024-12 | |
| Youth Outdoor Unity | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
Other causes in Houston, TX
- Religion-related 3,017
- Human services 1,732
- Education 1,728
- Philanthropy, voluntarism and grantmaking foundations 1,145
- Arts, culture and humanities 978
- Community improvement and capacity building 743
- Recreation and sports 542
- Youth development 541
- Housing and shelter 444
- Health care 389
- Mental health and crisis intervention 251
- International, foreign affairs and national security 211
- Animal-related 200
- Public and societal benefit 194
- Crime and legal-related 152
- Food, agriculture and nutrition 133
- Diseases, disorders and medical disciplines 124
- Employment 116
- Civil rights, social action and advocacy 107
- Mutual and membership benefit 91
- Public safety, disaster preparedness and relief 91
- Medical research 77
- Science and technology 70
- Social science 23
Every nonprofit in Houston, TX · 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.