NEW ENGLAND INTERSTATE WATER POLLUTION CONTROL COMMISSION: Single Audit Reports and Findings
NEW ENGLAND INTERSTATE WATER POLLUTION CONTROL COMMISSION filed 10 single audits between 2016 and 2025; the most recently observed auditor is GRASSI & CO., CPAS, P.C. (2025), and the 2025 report lists 1 finding. Data as of 2026-09-17.
Data as of Sep 17, 2026 · Source: Federal Audit Clearinghouse (public data)
Single audits by year
One row per audit year as the Federal Audit Clearinghouse accepted it. The auditor named is the one observed on that filing; NEW ENGLAND INTERSTATE WATER POLLUTION CONTROL COMMISSION is recorded in LOWELL, Massachusetts under EIN 046004735, and the Clearinghouse records it as a nonprofit.
| Audit year | Fiscal year end | Federal expended | Threshold applied | Auditor observed | Findings | MW / SD | FAC report |
|---|---|---|---|---|---|---|---|
| 2025 | 2025-09-30 | $16,109,467 | $1,000,000 | GRASSI & CO., CPAS, P.C. | 1 | SD | 2025-09-GSAFAC-0000418673 |
| 2024 | 2024-09-30 | $13,992,219 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2024-09-GSAFAC-0000367749 |
| 2023 | 2023-09-30 | $11,431,022 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2023-09-GSAFAC-0000038090 |
| 2022 | 2022-09-30 | $9,721,974 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2022-09-CENSUS-0000005239 |
| 2021 | 2021-09-30 | $8,718,664 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2021-09-CENSUS-0000005239 |
| 2020 | 2020-09-30 | $8,329,427 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2020-09-CENSUS-0000005239 |
| 2019 | 2019-09-30 | $8,643,976 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2019-09-CENSUS-0000005239 |
| 2018 | 2018-09-30 | $9,912,626 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2018-09-CENSUS-0000005239 |
| 2017 | 2017-09-30 | $9,568,325 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2017-09-CENSUS-0000005239 |
| 2016 | 2016-09-30 | $8,438,642 | $750,000 | ANSTISS & CO., P.C. | 0 | — | 2016-09-CENSUS-0000005239 |
Which federal programs did this organization report?
From the most recent accepted report. "Major" is the designation the auditor made under 2 CFR 200.518, not ours.
| ALN | Program | Expended | Major |
|---|---|---|---|
| 66.481 | GEOGRAPHIC PROGRAMS Â LAKE CHAMPLAIN BASIN PROGRAM | $10,813,248 | Yes |
| 66.437 | GEOGRAPHIC PROGRAMS Â LONG ISLAND SOUND PROGRAM | $1,764,175 | No |
| 66.419 | WATER POLLUTION CONTROL STATE, INTERSTATE, AND TRIBAL PROGRAM SUPPORT | $951,704 | No |
| 66.816 | HEADQUARTERS AND REGIONAL UNDERGROUND STORAGE TANKS PROGRAM | $654,067 | No |
| 11.420 | COASTAL ZONE MANAGEMENT ESTUARINE RESEARCH RESERVES | $586,519 | No |
| 15.939 | HERITAGE PARTNERSHIP | $449,179 | No |
| 66.446 | TECHNICAL ASSISTANCE FOR TREATMENT WORKS (CLEAN WATER ACT [CWA] SECTION 104(B)(8)) | $215,559 | No |
| 11.469 | CONGRESSIONALLY IDENTIFIED AWARDS AND PROJECTS | $179,399 | No |
| 66.444 | VOLUNTARY SCHOOL AND CHILD CARE LEAD TESTING AND REDUCTION GRANT PROGRAM (SDWA 1464(D)) | $120,786 | No |
| 66.436 | SURVEYS, STUDIES, INVESTIGATIONS, DEMONSTRATIONS, AND TRAINING GRANTS AND COOPERATIVE AGREEMENTS - SECTION 104(B)(3) OF THE CLEAN WATER ACT | $118,813 | No |
| 66.454 | WATER QUALITY MANAGEMENT PLANNING | $96,523 | No |
| 11.432 | NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION (NOAA) COOPERATIVE INSTITUTES | $78,869 | No |
| 66.129 | GEOGRAPHIC PROGRAMS - SOUTHEAST NEW ENGLAND COASTAL WATERSHED RESTORATION PROGRAM | $45,686 | No |
| 66.461 | REGIONAL WETLAND PROGRAM DEVELOPMENT GRANTS | $34,940 | No |
What findings did the auditor report?
The reference and the requirement letter are the ones the auditor used. The finding text itself is not reproduced here; the FAC report linked above carries it in full.
| Reference | Requirement | Severity | Repeat |
|---|---|---|---|
| 2025-001 | L | Significant deficiency | No |
Form 990 and IRS registration
Form 990 "accounting fees" (Part IX line 11c) cover all accounting services reported by the organization and are not the price of an audit engagement.
- Most recent return
- 990 for 2025-09
- Total revenue
- $31,684,303
- Total assets
- $15,401,119
- Accounting fees (Part IX line 11c)
- $48,883
- Paid preparer
- GRASSI & CO CPA'S PC
- IRS object id
- 202601429349301505
- NTEE code
- C012
- Exempt under
- 501(c)(3)
- Ruling year
- 1981
- BMF release
- 2026-09-17
Read next
- CPA firms that audit Massachusetts nonprofits
- Massachusetts single audit statistics
- Massachusetts nonprofit audit requirements
How we computed this
Every row comes from the Federal Audit Clearinghouse record named beside it, one report per audit year, with a resubmission superseding the filing it replaces. The auditor is the one named on that filing — it is not a statement about who audits NEW ENGLAND INTERSTATE WATER POLLUTION CONTROL COMMISSION now. Form 990 figures come from the IRS e-filed return named by its object id. This page exists because the organization filed at least two single audits, or one with a finding.
Cite this page
AuditRadar. “NEW ENGLAND INTERSTATE WATER POLLUTION C Single Audits.” https://getauditradar.com/single-audits/ma/new-england-interstate-water-pollution-control-commission-046004735/. Data as of 2026-09-17.