Data / Nonprofits / Connecticut / New Haven / Environment
Environment nonprofits in New Haven, CT: 17 registered with the IRS
17 environment nonprofits are registered with the IRS in New Haven, CT, 17 of them 501(c)(3) charities; the 8 that report revenue took in $11.7 million. The largest by revenue: Save the Sound Inc ($9.9 million), Gather New Haven ($800,527), Havens Harvest Inc ($350,790).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Save the Sound Inc | 501(c)(3) | 1994 | $9.9 million | $22 million | 2025-09 |
| Gather New Haven | 501(c)(3) | 1982 | $800,527 | $1.8 million | 2024-12 |
| Havens Harvest Inc | 501(c)(3) | 2023 | $350,790 | $98,355 | 2024-12 |
| Huneebee Project Inc | 501(c)(3) | 2021 | $245,812 | $52,059 | 2024-12 |
| Buildgreenct Inc | 501(c)(3) | 2003 | $161,690 | $61,570 | 2024-12 |
| The Claire C Ennitt Watershed Fund Inc | 501(c)(3) | 1999 | $103,455 | $2 million | 2025-05 |
| Sisters Journey Inc | 501(c)(3) | 2004 | $94,648 | $43,978 | 2025-12 |
| New Haven Green Fund Inc | 501(c)(3) | 2009 | $51,921 | $1.5 million | 2024-12 |
| 10000 Hawks Inc | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| 36 Tower Lane Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Connecticut Agricultural Experiment Station Research Foundation Inc | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Connecticut Community Gardening Association | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Connecticut Recyclers Coalition Inc | 501(c)(3) | 2012 | $0 | $0 | 2025-06 |
| Good for Morris Cove Corp | 501(c)(3) | 2026 | |||
| New Haven Bonsai Society Inc | 501(c)(3) | 2001 | $0 | $0 | 2025-06 |
| Rainbow Recycling Inc | 501(c)(3) | 1991 | $0 | $0 | 2022-12 |
| Sonic Haven | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
Other causes in New Haven, CT
- Education 153
- Religion-related 150
- Arts, culture and humanities 109
- Human services 96
- Community improvement and capacity building 55
- Philanthropy, voluntarism and grantmaking foundations 46
- Housing and shelter 41
- Health care 33
- Recreation and sports 32
- Youth development 31
- International, foreign affairs and national security 19
- Employment 17
- Public and societal benefit 16
- Crime and legal-related 14
- Mental health and crisis intervention 14
- Mutual and membership benefit 12
- Food, agriculture and nutrition 10
- Science and technology 9
- Civil rights, social action and advocacy 7
- Medical research 5
- Diseases, disorders and medical disciplines 5
- Animal-related 3
- Social science 3
Every nonprofit in New Haven, CT · 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.