Nonprofit · EIN 86-1647486
CLEAN STREAMS RIVERS AND LAKES
Tax-exempt · FAIRFAX, VA 22030
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $63,145 | $32,873 | $30,272 | $7,644 | $4,172 | $3,472 |
| December 31, 2024 | 990-EZ | $64,333 | $57,809 | $6,524 | $14,589 | $131 | $14,458 |
| December 31, 2023 | 990-EZ | $94,835 | $91,978 | $2,857 | $7,934 | $0 | $7,934 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $1,764
- Program service revenue
- $61,381
- Investment income
- $0
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $3,000
- Professional fees and payments to contractors
- $28,331
- Printing, publications and postage
- $3
- Other expenses
- $1,539
- Program services (functional)
- $41,258
Balance sheet and other
- Total assets, start of year
- $14,589
- Total assets, end of year
- $7,644
- Total liabilities, end of year
- $4,172
- Net assets, end of year
- $3,472
- Cash, savings and investments
- $7,644
- Gross receipts
- $63,145
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-EZ for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Matthew J Rainoff | President/Treasurer | 4 | $0 |
| Mark L Tull | Vice President | 2 | $0 |
| Jeffrey S Stahle | Secretary | 2 | $0 |
990-EZ for the year ended December 31, 2024: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Matthew J Rainoff | President/Treasurer | 20 | $0 |
| Mark L Tull | Vice President | 5 | $0 |
| Jeffrey S Stahle | Secretary | 2 | $0 |
990-EZ for the year ended December 31, 2023: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Matthew J Rainoff | President/Treasurer | 20 | $3,000 |
| Mark L Tull | Vice President | 5 | $0 |
| Jeffrey S Stahle | Secretary | 5 | $0 |
Address and contacts
- Address (IRS master file)
- 3905 RAILROAD AVE STE LL103, FAIRFAX, VA 22030-3933
- In care of
- % MATTHEW J RAINOFF
- Mailing address (990-N for 2021)
- 3905 Railroad Ave Suite LL103, Fairfax VA 22030
- Principal officer (990-N for 2021)
- Matthew J Rainoff, 10459 Moore Drive, Manassas VA 20111
- Signed the 990-EZ
- Matthew Rainoff, President/Treasurer
- Phone
- (571) 436-6327
Mission
Research, Education, Engineering, Manufacturing, Remediation and all other activities related to Achieving Safer Cleaner Water Quality on our Planet Earth.
Program accomplishments
- Continued in our fourth year of field testing combinations of aeration equipment, diatom promoter, mined calcium silicate, other natural phosphorus reducing products41258 and beneficial bacteria to reduce pollution in ponds. Also supplied to some pond owners safe selective herbicide they requested to reduce weeds. Provided consulting and excess nutrient education to many pond owners for no charge.Expenses $41,258
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 year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-EZ on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 86-1647486
- 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
- 2021
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Environment (C32)
- Assets (IRS master file)
- $7,644
- Income (IRS master file)
- $63,145
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $63,145 | $32,873 | $7,644 | XML |
| 990-EZ | December 2024 | $64,333 | $57,809 | $14,589 | XML |
| 990-EZ | December 2023 | $94,835 | $91,978 | $7,934 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-N for 2021 Officer: Matthew J Rainoff | December 31, 2021 | ≤ $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 86-1647486).
Questions about CLEAN STREAMS RIVERS AND LAKES
- What is the EIN of CLEAN STREAMS RIVERS AND LAKES?
- The employer identification number (EIN) of CLEAN STREAMS RIVERS AND LAKES is 86-1647486.
- Is CLEAN STREAMS RIVERS AND LAKES tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2021.
- Are donations to CLEAN STREAMS RIVERS AND LAKES tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does CLEAN STREAMS RIVERS AND LAKES 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 CLEAN STREAMS RIVERS AND LAKES 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 CLEAN STREAMS RIVERS AND LAKES last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who is the principal officer of CLEAN STREAMS RIVERS AND LAKES?
- The 990-N for 2021 names Matthew J Rainoff.
- Who are the officers and directors of CLEAN STREAMS RIVERS AND LAKES?
- The 990-EZ for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
- How much revenue does CLEAN STREAMS RIVERS AND LAKES have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $63,145, expenses of $32,873 and total assets of $7,644 at year end.
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