Is it real?
Yes. Never revoked by the IRS. Latest filing on record: FY2025. IRS ruling in Oct 1977.
IRS Pub. 78 · IRS Auto-Revocation List · IRS Business Master File
Where the money goes
84 cents of each dollar spent went to programs.
Form 990 Part IX, line 25, columns B–D. Every line is in By the numbers.
Something off? Claim to add context
Who runs it and what they're paid
17 people listed on the 990; $168K paid to officers and key staff.
Stephanie Prellwitz’s $168K as CEO is at the 73rd percentile of top reported officer pay among 1851 $1–10M environment nonprofits. Peer set: organizations in the same NTEE major field of work and revenue-size band, compared on each org’s own highest-paid officer/key-employee, from Form 990 Part VII / 990-PF Part VIII. Descriptive placement, not a verdict on whether the pay is appropriate.
Compensation history total reportable pay by year · 1 named individual · Part VII
| Name | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | FY2020 |
|---|---|---|---|---|---|---|
| Stephanie Prellwitz | $168,112 | $164,711 | $95,715 | $77,394 | $64,831 | $69,660 |
Total reportable compensation (Form 990 Part VII column D / Schedule J column E) by filing year, matched by name within this organization. The Schedule J base / bonus / deferred breakdown is not parsed into this dataset.
See Green Lake Association INC executive salaries →Questions the 990 asks
The form asks each of these directly. These are the filed answers.
- Family or business ties among officersPt VI · Ln 2No
- Top official's pay set by an independent reviewPt VI · Ln 15aYes
Programs and updates
Protects Big Green Lake and its watershed, focusing on improving water quality.
Questions for Green Lake Association INC
Your first name shows with your question. Green Lake Association INC answers here, for everyone.
This year, the green lake association continued to make strides in protecting and restoring green lake, driven by innovative research, dedicated volunteers, and the unwavering support of our community. Together, we tackled challenges, celebrated successes, and set the stage for a cleaner, healthier lake for generations to come.
Funders
Who pays for it.
From grant filings on record. Receipts are incomplete: individual donors are never listed.
Grants
By the numbers
The FY2025 990, line by line.
Download 990
| Line | Start FY25 | End FY25 |
|---|---|---|
| Cash and savingsLn 1–2 | $2.0M | $2.9M |
| Land, buildings, equipmentLn 10c | $176K | $137K |
| Total assetsLn 16 | $6.0M | $6.5M |
| LiabilitiesLn 26 | $300K | $328K |
| Net assetsLn 32 | $5.7M | $6.2M |
| Line | Total | Programs | Management | Fundraising |
|---|---|---|---|---|
| Pay of current officers, directors and key staffLn 5 | $174K | $147K | $10K | $17K |
| Other salaries and wagesLn 7 | $432K | $295K | $4K | $134K |
| Pension plan contributionsLn 8 | $10K | $7K | $3K | |
| Other employee benefitsLn 9 | $78K | $58K | $21K | |
| Payroll taxesLn 10 | $48K | $36K | $952 | $11K |
| Accounting feesLn 11c | $19K | $19K | ||
| Other fees for servicesLn 11g | $38K | $25K | $3K | $10K |
| Advertising and promotionLn 12 | $8K | $8K | ||
| Office expensesLn 13 | $50K | $47K | $91 | $3K |
| OccupancyLn 16 | $24K | $18K | $5K | $476 |
| Conferences, conventions and meetingsLn 19 | $24K | $24K | $493 | |
| Depreciation, depletion and amortizationLn 22 | $39K | $39K | ||
| InsuranceLn 23 | $18K | $18K | ||
| Other expenses (24a–d)Ln 24 | $508K | $508K | $165 | $12 |
| All other expensesLn 24e | $56K | $55K | $47 | $201 |
| Total functional expensesLn 25 | $1.5M | $1.3M | $65K | $176K |
Filing history
| Year | Money in | Money out | In minus out | Net assets | Download |
|---|---|---|---|---|---|
| FY2025 Latest ViewingFiled with the IRS Jul 23, 2026 | $1.9M | $1.5M | $371K | $6.2M | 990 PDF |
| FY2024Filed with the IRS Aug 22, 2025 | $2.9M | $1.3M | $1.7M | $5.7M | 990 PDF |
| FY2023Filed with the IRS Aug 6, 2024 | $1.9M | $1.2M | $707K | $4.0M | 990 PDF |
| FY2022Filed with the IRS Aug 17, 2023 | $1.9M | $800K | $1.1M | $3.3M | 990 PDF |
| FY2021Filed with the IRS Nov 14, 2022 | $2.0M | $468K | $1.6M | $2.1M | 990 PDF |
| FY2020Filed with the IRS Nov 15, 2021 | $558K | $552K | $6K | $575K | 990 PDF |
Schedules filed Part IV
See the full FY2025 990 (6 parts)
Part I · Summary $1,896,514 revenue, 12 lines filed
Part VI · Governance 16 of 16 board members independent, no flags
Part VIII · Statement of revenue $1,896,514 across 9 lines filed
Part IX · Statement of functional expenses $1,525,849 across 15 lines filed
Part X · Balance sheet $6,514,976 assets, 16 lines filed
Part XI · Reconciliation of net assets $6,187,089 net assets at year end
Form 990 e-file (XML) FY2025 from the IRS · Classification, formation year and address from the IRS Business Master File
Similar organizations you could support · Compare with another nonprofit
Names, privacy, and removal requests More
The names, titles, and compensation shown on this page are reproduced from IRS Form 990 filings, which are public records.
Philanthropy.org does not alter the content of those filings. All information appears exactly as reported by the filing organization for the tax year shown.
We publish only information contained in the public IRS filing — and less than the filing contains. Our profile pages do not display street addresses, telephone numbers, personal email addresses, or other personal contact information, even where the filing includes them.
Many people share the same name. A name shown on this page reflects only what one organization reported in one IRS filing for one tax year. It should not be interpreted as identifying any other individual with the same or a similar name.
If you are no longer affiliated with the organization, your name will generally stop appearing in future IRS filings once the organization no longer reports you. Pages for tax years in which you were reported remain published because those filings remain part of the public record.
Philanthropy.org does not alter or remove IRS filing records. Removing a page from this website would not remove the underlying IRS filing, which remains publicly available from the IRS and other publishers of the same information.
If you believe the IRS filing itself is inaccurate, corrections must be made by the filing organization or the IRS directly.