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ANACOSTIA WATERSHED SOCIETY INC

EIN 52-1666511 BLADENSBURG, MD

Revenue 2023
$2,755,531
Expenses 2023
$3,232,660

Program services were 73.7% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C320
Classification
1200
Street
4302 BALTIMORE AVE

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Officers and directors · 2023

As listed in Part VII of the 2023 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • CHRISTOPHER E WILLIAMS

    PRESIDENT/CE

    Total calculated
    $167,632
    From this org
    $159,254
    From related orgs
    $0
    Other
    $8,378
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $159,254
    Bonus
    not reported
    Other
    not reported
    Deferred
    $4,778
    Nontaxable benefits
    $3,600
    Filer's total
    $167,632

  • ERIN B CASTELLI

    SENIOR V.P/C

    Total calculated
    $139,647
    From this org
    $134,000
    From related orgs
    $0
    Other
    $5,647
    Hours/week
    40

  • ROBERT BOONE

    HONORARY BOA

    Total calculated
    $0
    Hours/week
    0.5

  • NEIL S LANG

    VICE CHAIR

    Total calculated
    $0
    Hours/week
    1

  • GEOFF RANKIN

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    1

  • KATHLEEN LINEHAN

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    1

  • KATHLEEN PETRILLO-SMITH

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    1

  • DONNA D AN

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • DANIELLE BAUSSAN

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • ELISHA DUNN-GEORGIOU

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • ELISSA FELDMAN

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    1

  • LARS HANSLIN

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    1

  • JAYANT KAIRAM

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • NIGEL STEPHENS

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • MICHAEL TILCHIN

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • KEN WILLIAMS

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    4

  • JIM CONNOLLY

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • LEE POSTON

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2023
    Revenue
    $2,755,531
    Expenses
    $3,232,660
    Contributions
    $1,954,681
    Grants paid
    $0
  • 2022
    Revenue
    $2,260,143
    Expenses
    $2,737,776
    Contributions
    $1,806,710
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $2,460,530
    Expenses
    $2,416,757
    Assets (EOY)
    $2,530,895

  • 2020 · 990

    Revenue
    $2,308,216
    Expenses
    $2,415,595
    Assets (EOY)
    $2,254,040

  • 2019 · 990

    Revenue
    $2,302,178
    Expenses
    $2,338,265
    Assets (EOY)
    $1,766,684

  • 2018 · 990

    Revenue
    $2,630,476
    Expenses
    $2,723,944
    Assets (EOY)
    $1,599,013

  • 2017 · 990

    Revenue
    $4,070,668
    Expenses
    $3,962,805
    Assets (EOY)
    $1,621,648

  • 2016 · 990

    Revenue
    $2,508,796
    Expenses
    $2,373,430
    Assets (EOY)
    $1,552,989

  • 2015 · 990

    Revenue
    $3,471,330
    Expenses
    $3,788,313
    Assets (EOY)
    $1,579,963

  • 2014 · 990

    Revenue
    $3,383,471
    Expenses
    $3,086,128
    Assets (EOY)
    $1,741,667

  • 2013 · 990

    Revenue
    $2,330,763
    Expenses
    $2,196,636
    Assets (EOY)
    $1,317,625

  • 2012 · 990

    Revenue
    not reported
    Expenses
    $1,791,769
    Assets (EOY)
    $1,196,895

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared on its 2023 return

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 23 October 2026, for every organization at once. Returns through tax year 2023, the newest we have parsed for this organization.