Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 61-1781103

LEAGUE OF WATERSHED GUARDIANS

Tax-exempt · ARNOLD, MO 63010

Address and contacts

Address (IRS master file)
3195 ROSEDALE DR, ARNOLD, MO 63010-2644
In care of
% DENNIS M SULLIVAN - VICE PRESIDEN
Mailing address (990-N for 2025)
3195 Rosedale Drive, Arnold MO 63010
Principal officer (990-N for 2025)
Janet McIlwee, 3195 Rosedale Drive, Arnold MO 63010

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for LEAGUE OF WATERSHED GUARDIANS

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
61-1781103
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2017
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Environment (C20)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Janet McIlwee
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: William McIlwee
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: William McIlwee
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: William McIlwee
December 31, 2022≤ $50,000 receipts––e-Postcard
990-EZDecember 2021–––IRS
990-N for 2020
Officer: William McIlwee
January 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Dennis Sullivan
January 31, 2020≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 61-1781103).

Questions about LEAGUE OF WATERSHED GUARDIANS

What is the EIN of LEAGUE OF WATERSHED GUARDIANS?
The employer identification number (EIN) of LEAGUE OF WATERSHED GUARDIANS is 61-1781103.
Is LEAGUE OF WATERSHED GUARDIANS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2017.
Are donations to LEAGUE OF WATERSHED GUARDIANS tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does LEAGUE OF WATERSHED GUARDIANS file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of LEAGUE OF WATERSHED GUARDIANS due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did LEAGUE OF WATERSHED GUARDIANS last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of LEAGUE OF WATERSHED GUARDIANS?
The 990-N for 2025 names Janet McIlwee.

Other nonprofits in ARNOLD

All nonprofits in ARNOLD · Missouri · Environment