Environment nonprofits in Wisconsin

Environment nonprofits in Wisconsin. Browse 1,084 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. Trail Festers Inc

    EIN 383807740 · Headquarters: CHIPPEWA FALLS, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Trail Life Inc

    EIN 861857195 · Headquarters: SOLON SPRINGS, WI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  3. Trailing Arbutus Gardeners Ua

    EIN 202761323 · Headquarters: Merrillan, WI, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  4. Trautmann-Lee Natural Foods Fund Inc

    EIN 391305324 · Headquarters: Poynette, WI, USA · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-PF

  5. Trees for Tomorrow Inc

    EIN 390732118 · Headquarters: EAGLE RIVER, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  6. Trees of Hope Corporation

    EIN 921655396 · Headquarters: FITCHBURG, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Trekking Grounds Foundation Inc

    EIN 334450450 · Headquarters: Oshkosh, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Tropical Wings Inc

    EIN 473561173 · Headquarters: Hudson, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Tru Strides Inc

    EIN 923332536 · Headquarters: Rio, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Trust for Natural Legacies Inc

    EIN 841719889 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  11. Turtle Lake Improvement and Protective Association Inc

    EIN 391485049 · Headquarters: Delavan, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Turtles for Tomorrow Ltd

    EIN 454522509 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  13. Twin Lakes Association Inc

    EIN 680530590 · Headquarters: Markesan, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Twin Lakes Conservancy Inc

    EIN 392019523 · Headquarters: Shorewood, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Twin Lakes Preservation Association Inc

    EIN 391857670 · Headquarters: MINONG, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Twin Ports Action Alliance

    EIN 831965442 · Headquarters: Superior, WI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  17. Two Sisters Lake Property Owners Association Inc

    EIN 391383940 · Headquarters: LAKE TOMAHAWK, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Uec Land Corporation

    EIN 464292052 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Uec Supporting Organization Inc

    EIN 934287308 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Ukpoa Inc

    EIN 814573897 · Headquarters: HAZELHURST, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Ulao Creek Partnership Inc

    EIN 391987837 · Headquarters: Port Washington, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Under the Bodhi Tree Ltd

    EIN 341999415 · Headquarters: Janesville, WI, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  23. Uplands Garden Club

    EIN 392042537 · Headquarters: Mineral Point, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Upper and Lower Webb Lake Association

    EIN 814479440 · Headquarters: DANBURY, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Upper Sugar River Watershed

    EIN 392000260 · Headquarters: MOUNT HOREB, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Urban Ecology Center Inc

    EIN 391712663 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Urban Tree Alliance

    EIN 454226545 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. Urban Wood Network Inc

    EIN 923210445 · Headquarters: DEERFIELD, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Valley Stewardship Network Inc

    EIN 392019985 · Headquarters: VIROQUA, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Van Der Brohe Arboretum Inc

    EIN 832011268 · Headquarters: TWO RIVERS, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Van Zile Lake Association Inc

    EIN 471681812 · Headquarters: Newald, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Vesper Snowdrifters Ltd

    EIN 237413653 · Headquarters: Vesper, WI, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  33. Victory Garden Initiative Inc

    EIN 455035466 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Vilas County Lakes Association Corp

    EIN 452455258 · Headquarters: Eagle River, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Viroqua Plastic Free Inc

    EIN 842501836 · Headquarters: Viroqua, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Volunteers for a Beautiful Hartford Corporation

    EIN 842645456 · Headquarters: HARTFORD, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Walleye Restoration Foundation Inc

    EIN 991278873 · Headquarters: STAR LAKE, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Walleyes for Chetek Inc

    EIN 812797331 · Headquarters: Chetek, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Walleyes for Northwest Wisconsin- Hayward Area Chapter Inc

    EIN 391797162 · Headquarters: Hayward, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  40. Walworth County Lakes Association Inc

    EIN 800076558 · Headquarters: ELKHORN, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Walworth County Master Gardener Volunteer Association Inc

    EIN 800572019 · Headquarters: ELKHORN, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Washburn County Lakes and Rivers Association Inc

    EIN 391977735 · Headquarters: Spooner, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Wastecap Resource Solutions Inc

    EIN 391912471 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Water Energy Forward Inc

    EIN 333150780 · Headquarters: Milwaukee, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Watershed Church

    EIN 205405222 · Headquarters: Stoughton, WI, USA · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  46. Watershed Program of Se Wisconsin

    EIN 843455564 · Headquarters: RACINE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  47. Watershed Protection Committee of Racine County Inc

    EIN 833262626 · Headquarters: Waterford, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Watershed Watchers

    EIN 030550506 · Headquarters: West Bend, WI, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  49. Waterways Association of Menominee and Shawano Counties Inc

    EIN 812199033 · Headquarters: SHAWANO, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Waukesha County Conservation Alliance

    EIN 391686821 · Headquarters: MENOMONEE FALLS, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Waukesha County Environmental Actio N League Inc

    EIN 391749124 · Headquarters: Brookfield, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  52. Waukesha County Green Team

    EIN 460902803 · Headquarters: Waukesha, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. Waukesha County Land Conservancy Inc

    EIN 391736112 · Headquarters: BROOKFIELD, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. Waupaca Chain O Lake Association

    EIN 391868289 · Headquarters: king, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Wauwatosa Beautification Committee Inc

    EIN 391855646 · Headquarters: Wauwatosa, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  56. Wedel Oak Woods Foundation Inc

    EIN 821041709 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  57. Weed Out Racine

    EIN 900611433 · Headquarters: Racine, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. West Fork Sportsmens Club Inc

    EIN 391624390 · Headquarters: VIROQUA, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  59. Western Dane Preservation Campaign

    EIN 824617514 · Headquarters: Mount Horeb, WI, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  60. Weyauwega Lake Restoration Inc

    EIN 264788992 · Headquarters: WEYAUWEGA, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Wheeler Lake Association

    EIN 391282881 · Headquarters: LAKEWOOD, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  62. White Clay Lake Sportsmens Club Inc

    EIN 931689583 · Headquarters: Cecil, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. White Lake Preservation Association LTD

    EIN 391509760 · Headquarters: Weyauwega, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  64. White River Flowage Association Inc

    EIN 391975379 · Headquarters: Fond du Lac, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. White Sand Lake Association

    EIN 461245348 · Headquarters: Fitchburg, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Whitefish Bay Business & Professional Association Inc

    EIN 391249776 · Headquarters: Whitefish Bay, WI, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  67. Whitefish Bay Garden Club

    EIN 510204421 · Headquarters: Whitefish Bay, WI, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  68. Whitefish Lake Conservation Organization Inc

    EIN 912093794 · Headquarters: Gordon, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  69. Whitefish Lake Property Owners Association

    EIN 391596153 · Headquarters: Stone Lake, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Whitetails Unlimited Inc

    EIN 391415070 · Headquarters: STURGEON BAY, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Whitetails Unlimited Inc

    EIN 391578194 · Headquarters: Onalaska, WI, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  72. Whitetails Unlimited Inc

    EIN 391581733 · Headquarters: Elkhart Lake, WI, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  73. Whitetails Unlimited Inc Eau Claire

    EIN 391578195 · Headquarters: Altoona, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Whitetails Unlimited Inc Marshfield

    EIN 391537839 · Headquarters: MARSHFIELD, WI, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  75. Whitetails Unlimited Inc Oshkosh

    EIN 391560033 · Headquarters: OSHKOSH, WI, USA · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  76. Wild Ecosystems Conservation Initiative Inc

    EIN 473411920 · Headquarters: Chippewa Falls, WI, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  77. Wild Ones Natural Landscapers Ltd

    EIN 391695443 · Headquarters: NEENAH, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Wild Path Collective Incorporated

    EIN 873644112 · Headquarters: OSCEOLA, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Wild Rivers Conservancy of the St Croix & Namekagon

    EIN 263025933 · Headquarters: OSCEOLA, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  80. Wild Rose Education Center and Nature Preserve Inc

    EIN 450510952 · Headquarters: Dousman, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. William Bassett Foundation

    EIN 391989695 · Headquarters: HOLMEN, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  82. Willow Region Sportsmens Club Inc

    EIN 396069918 · Headquarters: Tripoli, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Windigo Lake Property Owners Assoc

    EIN 391865631 · Headquarters: Hayward, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Wings Over Alma Inc

    EIN 205658790 · Headquarters: Alma, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Wings Over Wisconsin Inc

    EIN 391385733 · Headquarters: Mayville, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. Winnebago Conservation Club

    EIN 237423217 · Headquarters: OSHKOSH, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Winnebago Lakes Council Inc

    EIN 331110970 · Headquarters: Winnebago, WI, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  88. Winter Lakes Alliance Inc

    EIN 030461944 · Headquarters: Winter, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Wisconsin Asbestos Victims Network Inc

    EIN 462937404 · Headquarters: MADISON, WI, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  90. Wisconsin Association for Environmental Education Inc

    EIN 391390520 · Headquarters: Stevens Point, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  91. Wisconsin Association for Floodplain Stormwater & Coastal Ma

    EIN 262870320 · Headquarters: Cedarburg, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. Wisconsin Association of Lakes Inc

    EIN 391926001 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Wisconsin Association of Resource Conservation & Dev Councils Inc

    EIN 391838230 · Headquarters: RHINELANDER, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Wisconsin Bear Hunters Association Inc

    EIN 391506370 · Headquarters: BERLIN, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  95. Wisconsin Bio Industry Alliance Inc

    EIN 204846948 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  96. Wisconsin Chapter of Land Improvement Contractors of America

    EIN 391510971 · Headquarters: SEYMOUR, WI, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  97. Wisconsin Chapter of the American Concrete Institute

    EIN 391876876 · Headquarters: Butler, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Wisconsin Clean Cities

    EIN 391820023 · Headquarters: Milwaukee, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Wisconsin Climbers Association

    EIN 823499538 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Wisconsin Conservation and Education Foundation Inc

    EIN 391937453 · Headquarters: Madison, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

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