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Providing water service to member customers in central South Dakota.
Source: IRS Form 990 (Tax Year 2024)
Source: IRS Form 990 via ProPublica Nonprofit Explorer
Total Revenue
▼$5.4M
Total Contributions
$32.3K
Total Expenses
▼$3.9M
Total Assets
$73M
Total Liabilities
▼$1.3M
Net Assets
$71.7M
Officer Compensation
→$266.7K
Other Salaries
$0
Investment Income
▼$7,793
Fundraising
▼$0
Source: USAspending.gov · Searched by organization name
Total Federal Funding
$86.6M
Awards Found
22
Department of Agriculture
$5.4M
306C WWD NATIVE AMERICAN GRANTS - DOMESTIC WATER
Department of the Interior
$2.7M
THE MNI WASTE WATER COMPANY (MWWC), A CHEYENNE RIVER SIOUX TRIBE TRIBAL WATER COMPANY IN SOUTH DAKOTA, WILL CONSTRUCT THE NECESSARY INFRASTRUCTURE INCLUDING WATER DISTRIBUTION PIPELINES AND RESIDENTIAL CONNECTIONS TO SERVE QUALITY AND RELIABLE DRINKING WATER TO THE RURAL AREA NORTHWEST OF EAGLE BUTTE, AN AREA OF DEWEY COUNTY ON THE CHEYENNE RIVER SIOUX TRIBE RESERVATION. THE RESIDENTS IN THE PROJECT AREA CURRENTLY GET THEIR WATER SUPPLIES FROM EITHER LIMITED GROUNDWATER WELLS OR BY HAULING WATER FROM UP TO 10 OR MILES AWAY. THE GROUNDWATER WELLS WITHIN THE REGION ARE OF POOR QUALITY, INSUFFICIENT QUANTITY, ARE COSTLY DUE TO DEPTH, AND CAN BE UNRELIABLE AS PROVEN BY PAST DRY HOLES WITHIN THE REGION. THE MWWC ESTIMATES THAT THE PROJECT WILL PROVIDE CLEAN DRINKING WATER TO A TOTAL OF 37 RESIDENCES. INITIAL PLANNING FOR THIS PROJECT STARTED IN THE MID-1990S WITH THE FORMATION OF A STEERING COMMITTEE WHICH INCLUDED REPRESENTATIVES FROM TRI-COUNTY RURAL WATER ASSOCIATION (NOW MWWC), CHEYENNE RIVER SIOUX TRIBE, CHEYENNE RIVER HOUSE AUTHORITY, INDIAN HEALTH SERVICE (IHS), AND RECLAMATION.
Department of Agriculture
$2.4M
PERSISTENT POVERTY (GRANT ONLY) W&W- 306C-NATIVE AMERICAN-WATER ONLY
Department of the Interior
$2.2M
UNDER THIS AGREEMENT THE RECIPIENT SHALL PLAN, DESIGN, AND ACQUIRE PERMITS TO IMPROVE 20 MILES OF 10 PIPELINE AND TO CONSTRUCT THE REQUIRED INFRASTRUCTURE (PUMP STATIONS, STORAGE FACILITIES) TO SERVE QUALITY AND RELIABLE DRINKING WATER TO THE RURAL AREAS ALONG HIGHWAY 212 WEST OF EAGLE BUTTE, SD IN DEWEY COUNTY THROUGH DUPREE, SD IN ZIEBACH COUNTY.THIS AGREEMENT FUNDS THE FIRST PHASE OF THE WATER PIPELINE PROJECT, THE PLANNING AND DESIGN PHASE. THIS AGREEMENT WILL ALLOW MWWC TO COMPLETE THE DESIGN OF THE PROJECT, INCLUDING ENVIRONMENTAL COMPLIANCE AND PERMITTING AND TO PREPARE THE AREA FOR CONSTRUCTION WITHIN 2 YEARS OF FUNDING BEING AWARDED. THE PROJECT IS LOCATED ON THE CHEYENNE RIVER SIOUX TRIBE (CRST) RESERVATION.
Department of Agriculture
$2M
306C WWD NATIVE AMERICAN GRANTS - DOMESTIC WATER
Department of the Interior
$2M
TDWSP PLANNING AND DESIGN MNI WASTE HWY 212 SEGMENT 2
Department of Agriculture
$2M
306C WWD NATIVE AMERICAN GRANTS - DOMESTIC WATER
Department of Agriculture
$950K
EMERGENCY COMMUNITY WATER ASST. GRANT - APPROPRIATED(ECWAG-A) - 500,000 LIMIT
Department of the Interior
$695.4K
TDSWP - PLANNING AND DESIGN - MNI - NORTH ISABEL IMPROVEMENTS
Department of Agriculture
$447.5K
306C WWD NATIVE AMERICAN GRANTS - DOMESTIC WATER
Department of Agriculture
$326.3K
PERSISTENT POVERTY (GRANT ONLY) W&W- WATER ONLY
Department of Agriculture
$213.6K
PERSISTENT POVERTY (GRANT ONLY) COMBINATION LOAN & GRANT W&W-WATER ONLY
Source: Federal Audit Clearinghouse (fac.gov)
Total Audits
1
Clean Audits
0
Material Weakness
Yes
Noncompliance Issues
No
| Year | Status | Financial Report | Federal Expenditure | Low Risk | Accepted |
|---|---|---|---|---|---|
| 2025 | Material Weakness | Unmodified (Clean) | $13.4M | No | 2026-04-24 |
Financial Report
Unmodified (Clean)
Federal Expenditure
$13.4M
Source: IRS e-Filed Form 990
No officer or director compensation data available for this organization.
This data is sourced from IRS Form 990, Part VII. It may not be available if the organization files Form 990-N (e-Postcard) or has not yet been enriched.
Source: IRS Publication 78, Auto-Revocation List & e-Postcard Data
Tax-deductible contributions: Not confirmed
990-N (e-Postcard) Filing History
This organization files simplified Form 990-N (annual gross receipts ≤ $50,000).
Sources: IRS e-Filed Form 990 (XML) & ProPublica Nonprofit Explorer
Scroll →
| Year | Revenue | Contributions | Expenses | Assets | Net Assets |
|---|---|---|---|---|---|
| 2023 | $5.4M | $32.3K | $3.9M | $73M | $71.7M |
| 2022 | $4M | $0 | $3.7M | $72.9M | $71.3M |
| 2021 | $5.9M | $378.6K | $5.2M | $73.8M | $72.2M |
Sources: ProPublica Nonprofit Explorer & IRS e-File Index
Financial data: IRS Form 990 via ProPublica Nonprofit Explorer (Tax Year 2023)
Federal grants: USAspending.gov (live)
Organization info: IRS Business Master File · ProPublica Nonprofit Explorer
| 2021 | 990 | Data |