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Iowa · NTEE C

Environment Nonprofits in Iowa

Givalgo Discover indexes 50 active environment nonprofits headquartered in Iowa. The list below is sorted by reported revenue on the most recent Form 990 indexed for each organisation.

Top 50 by reported revenue

From the most recent Form 990 indexed for each organisation. Click an org for full diligence detail.

#OrganisationRevenue
1IOWA NATURAL HERITAGE FOUNDATION
EIN 42-1127544
$29.8M
2GREATER DES MOINES BOTANICAL GARDEN
EIN 42-0540765
$11.8M
3IOWA CONFLUENCE WATER TRAILS
EIN 87-1605740
$10.4M
4THE SPIRIT OF OKOBOJI
EIN 82-2954269
$8.4M
5CONSERVATION FOUNDATION OF DICKINSON COUNTY
EIN 36-4166056
$6.4M
6WATER PROFESSIONALS INTERNATIONAL
EIN 54-0944673
$3.7M
7TREES FOREVER INC
EIN 42-1419181
$3.5M
8IOWA AGRICULTURE WATER ALLIANCE
EIN 32-0440113
$3.4M
9INDIAN CREEK NATURE CENTER
EIN 23-7260197
$3.1M
10PATHFINDERS RESOURCE CONSERVATION AND DEVELOPMENT AREA INC
EIN 42-1127993
$2.1M
11DEB & JEFF HANSEN FOUNDATION
EIN 20-4366833
$1.9M
12IOWA ENVIRONMENTAL COUNCIL
EIN 42-1436090
$1.9M
13NAHANT MARSH EDUCATION CENTER
EIN 38-3667579
$1.8M
14IOWA VALLEY RESOURCE CONSERVATION & DEVELOPMENT
EIN 42-1481272
$1.8M
15IOWA AGRICULTURAL MITIGATION
EIN 27-2940802
$1.4M
16WHITEROCK CONSERVANCY
EIN 27-0110952
$1.4M
17SOIL AND WATER CONSERVATION SOCIETY
EIN 42-0716340
$1.2M
18IOWA NUTRIENT RESEARCH AND EDUCATION COUNCIL
EIN 47-2930044
$1.1M
19IOWA ARBORETUM INC
EIN 42-6122889
$1.1M
20RESOURCE CONSERVATION AND DEVELOPMENT FOR NORTHEAST IOWA INC
EIN 42-1309260
$1.0M
21MASON CITY FOUNDATION
EIN 42-1375606
$909K
22DUBUQUE ARBORETUM ASSOCIATION INC
EIN 42-1160989
$886K
23AGRICULTURES CLEAN WATER ALLIANCE
EIN 42-1510642
$857K
24GREEN SCHOOLS NATIONAL NETWORK INC
EIN 33-1191456
$791K
25GOLDEN HILLS RESOURCE CONSERVATION AND DEVELOPMENT AREA
EIN 42-1293893
$784K
26KEEP IOWA BEAUTIFUL
EIN 42-1497912
$733K
27IOWA GREAT LAKES BEAUTIFICATION
EIN 83-1898171
$696K
28WILLIAM G STOWE MEMORIAL FOUNDATION
EIN 88-1084462
$618K
29SUSTAINABLE IOWA LAND TRUST
EIN 47-2730222
$539K
30IOWA BUSINESS FOR CLEAN ENERGY
EIN 84-4539341
$527K
31CLEAN ENERGY DISTRICTS OF IOWA
EIN 61-1937493
$465K
32IOWA DRAINAGE DISTRICT ASSOC
EIN 42-1421758
$370K
33SOUTHWEST IOWA NATURE TRAILS PROJECT INC
EIN 42-1325845
$352K
34IOWA STORM WATER EDUCATION PARTNERSHIP
EIN 81-1051097
$325K
35CEDAR VALLEY ARBORETUM & BOTANIC GARDENS
EIN 42-1447541
$300K
36AGRICULTURAL DRAINAGE MANAGEMENT COALITION INC
EIN 68-0577650
$299K
37CLINTON COUNTY CONSERVATION FOUNDATION INC
EIN 39-1878166
$298K
38SOIL ENHANCEMENT AND SUBSURFACE WATER MANAGEMENT COALITION
EIN 88-1273653
$296K
39IOWA GREAT LAKES FOUNDATION
EIN 47-2505366
$280K
40IOWA WATER ENVIRONMENT ASSOCIATION
EIN 23-7447576
$266K
41A M O S-A METROPOLITAN ORGANIZING STRATEGY
EIN 39-1893896
$257K
42IOWA INTERFAITH POWER AND LIGHT IOWA FAITH AND CLIMATE NETWORK
EIN 26-4677966
$247K
43ENERGY ASSOCIATION OF IOWA SCHOOLS
EIN 45-4133218
$238K
44IZAAK WALTON LEAGUE OF AMERICA INC
EIN 42-0806386
$238K
45N-COMPASS INC
EIN 82-1004890
$233K
46FRIENDS OF WEBSTER COUNTY CONSERVATION
EIN 20-2849476
$222K
47SIOUX COUNTY CONSERVATION FOUNDATION
EIN 46-5642613
$213K
48DES MOINES CHAPTER OF THE IZAAK WALTON LEAGUE OF AMERICA
EIN 42-0687715
$212K
49FRIENDS OF WINNEBAGO COUNTY CONSERVATION FOUNDATION INC
EIN 46-0890017
$204K
50WINNESHIEK ENERGY DISTRICT
EIN 27-1525603
$195K

Frequently asked questions about environment nonprofits in Iowa

Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.

How many environment nonprofits operate in Iowa?
Every IRS-registered environment nonprofit in Iowa appears in the Givalgo Discover index. The top 50 by reported revenue are listed on this page; the full set is searchable on discover.givalgo.ai.
What's the largest environment nonprofit in Iowa?
The single largest environment nonprofit in Iowa by reported total revenue is shown at the top of the list on this page, sourced from each organisation's most recent IRS Form 990 filing.
How do I vet a environment nonprofit in Iowa before donating?
Use Givalgo Discover's free profile for the organisation: it cross-references the IRS Auto-Revocation List, IRS Publication 78, and the IRS Business Master File, and exposes the latest Form 990 financials and governance signals on a single page.
Are donations to Iowa environment nonprofits tax-deductible?
Federal deductibility is determined by IRS Publication 78 status, not state location. Donations to a Pub 78-listed environment nonprofit in Iowa are tax-deductible at the federal level; Iowa state tax treatment may differ.
Where do environment nonprofits in Iowa file their Form 990?
All US tax-exempt organisations file Form 990 with the IRS at the federal level — there is no state-specific filing for the federal exemption itself. Iowa state charity registration is a separate state-level requirement.