Data update history
September 1, 2024
Posted financials
Added Form 990 for fiscal year 2023
September 1, 2024
Updated personnel
Identified 1 new personnel
October 10, 2023
Posted financials
Added Form 990 for fiscal year 2022
September 28, 2023
Used new vendors
Identified 1 new vendor, including
August 17, 2023
Posted financials
Added Form 990 for fiscal year 2021
Nonprofit Types
Public utilitiesPublic sector nonprofits
Issues
No issues found
Characteristics
State / local level
General information
- Address
- PO Box 512
- Milbank, SD 57252
- County
- Grant County, SD
- Website URL
- whetstone.coop/
- Phone
- (605) 432-5331
IRS details
- EIN
- 46-0205275
- Fiscal year end
- December
- Taxreturn type
- Form 990
- Year formed
- 1940
- Eligible to receive tax-deductible contributions (Pub 78)
- No
Categorization
- NTEE code, primary
- W80: Public Utilities
- NAICS code, primary
- 2211: Electric Power Generation, Transmission, and Distribution Establishments
- Parent/child status
- Independent
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