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Nonprofit · EIN 46-0322961

KINGBROOK RURAL WATER SYSTEM INC

Tax-exempt · ARLINGTON, SD 57212

Financials

$12.5M$6.9M2023$24.9M$6.9M2024$9.4M$7.5M2025
Revenue Expenses · by fiscal year end
Financials of KINGBROOK RURAL WATER SYSTEM INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$9,403,452$7,457,604$1,945,848$102,116,243$43,691,389$58,424,854
December 31, 2024990$24,885,510$6,853,356$18,032,154$86,158,759$29,679,753$56,479,006
December 31, 2023990$12,480,485$6,944,763$5,535,722$65,246,493$26,799,641$38,446,852
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$0
Program service revenue
$7,471,559
Investment income
$598,263
Net rental income
$138,137
Net gain from sales of assets
$57,406
Other revenue
$1,333,630

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$175,425
Other salaries and wages
$1,025,357
Salaries, compensation and benefits (total)
$1,851,219
Professional fundraising fees
$0
Legal fees
$22,117
Accounting fees
$27,322
Travel
$17,122
Depreciation
$2,598,422

Balance sheet and other

Total assets, start of year
$86,158,759
Total assets, end of year
$102,116,243
Total liabilities, end of year
$43,691,389
Net assets, end of year
$58,424,854
Land, buildings and equipment
$79,521,037
Net assets without donor restrictions
$56,233,125
Net assets with donor restrictions
$2,191,729
Gross receipts
$9,403,452
Employees
21
Year formed
1975
State of legal domicile
SD

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
Heath ThompsonGeneral Manager40$136,454$45,878
Scott TolzinChairman
Officer
1$7,319$0
Doyle RenaasDirector
Trustee or director
1$6,342$0
Brian ChristensenVice Chairman
Officer
1$6,234$0
Corey DorhoutSec/Treasurer
Officer
1$6,054$0
Norman AndenasDirector
Trustee or director
1$5,704$0
Barry LoomisDirector
Trustee or director
1$4,136$0
Damon StormoDirector
Trustee or director
1$3,182$0
990 for the year ended December 31, 2024: 8 people
NameTitleHours / weekCompensationOther / benefits
Heath ThompsonGeneral Manager40$127,596$41,348
Scott TolzinChairman
Officer
1$6,506$0
Corey DorhoutSec/Treasurer
Officer
1$6,419$0
Doyle RenaasDirector
Trustee or director
1$5,927$0
Brian ChristensenVice Chairman
Officer
1$5,432$0
Norman AndenasDirector
Trustee or director
1$5,282$0
Barry LoomisDirector
Trustee or director
1$2,710$0
Damon StormoDirector
Trustee or director
1$2,130$0
990 for the year ended December 31, 2023: 8 people
NameTitleHours / weekCompensationOther / benefits
Heath ThompsonGeneral Manager40$111,409$37,117
Marvin AntonenChairman
Officer
1$6,200$0
Doyle RenaasDirector
Trustee or director
1$4,600$0
Corey DorhoutDirector
Trustee or director
1$4,600$0
Brian ChristensenDirector
Trustee or director
1$4,400$0
Rodney StormoSec/Treasurer
Officer
1$4,400$0
Scott TolzinVice Chairman
Officer
1$4,200$0
Norman AndenasDirector
Trustee or director
1$3,800$0

Address and contacts

Address (IRS master file)
PO BOX 299, ARLINGTON, SD 57212-0299
In care of
% KINGBROOK RURAL WATER SYSTEM INC
Signed the 990
Heath Thompson, General Manager
Phone
(605) 983-5074
Return prepared by
Kinner & Company Ltd

Mission

Sale of water to members in Hamlin, Clark, Kingsbury, Brookings, Lake, Moody, Miner, Minnehaha, Beadle, Sanborn and McCook counties in South Dakota.

990 for the year ended December 31, 2025

Program accomplishments

  • Kingbrook Rural Water System, Inc. was established to acquire, construct, maintain and operate a system for the diversion, supply, storage, and distribution of high quality water to members.

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. 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 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
46-0322961
Tax-exempt status
501(c)(12): Benevolent life insurance association or mutual company
Donations deductible
No
Exempt since
1977
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$102,116,243
Income (IRS master file)
$9,403,452

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$9,403,452$7,457,604$102,116,243IRS
990December 2024$24,885,510$6,853,356$86,158,759IRS
990December 2023$12,480,485$6,944,763$65,246,493XML
990December 2022$10,793,043$6,641,916$59,675,886IRS
990December 2021–––IRS
990December 2020–––IRS
990December 2019–––IRS
990December 2018–––IRS

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 46-0322961).

Questions about KINGBROOK RURAL WATER SYSTEM INC

What is the EIN of KINGBROOK RURAL WATER SYSTEM INC?
The employer identification number (EIN) of KINGBROOK RURAL WATER SYSTEM INC is 46-0322961.
Is KINGBROOK RURAL WATER SYSTEM INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(12) since 1977.
Are donations to KINGBROOK RURAL WATER SYSTEM INC tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does KINGBROOK RURAL WATER SYSTEM INC file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of KINGBROOK RURAL WATER SYSTEM INC 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 KINGBROOK RURAL WATER SYSTEM INC last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2025.
Who are the officers and directors of KINGBROOK RURAL WATER SYSTEM INC?
The 990 for the year ended December 31, 2025 lists 8 people; 8 received compensation from the organization, the highest $136,454 (Heath Thompson, General Manager).
How much revenue does KINGBROOK RURAL WATER SYSTEM INC have?
On its 990 for the year ended December 31, 2025 it reported revenue of $9,403,452, expenses of $7,457,604 and total assets of $102,116,243 at year end.

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