The documented backlog grew 26% in one year
The Indian Health Service’s sanitation-deficiency database rose from $4.7 billion in fiscal 2023 to $5.9 billion in fiscal 2024, according to GAO. The $1.2 billion increase equals 25.5%; aging systems and inadequate operation and maintenance contributed to the growth.
That rise occurred alongside major new federal funding. The infrastructure law provided $3.5 billion to IHS and $868 million to the Environmental Protection Agency for tribal water work—a combined $4.368 billion.
| Measure | Amount | Change or context |
|---|---|---|
| IHS tracked need, FY2023 | $4.7B | Database total |
| IHS tracked need, FY2024 | $5.9B | +$1.2B / +25.5% |
| Infrastructure-law funding to IHS | $3.5B | New investment |
| Infrastructure-law funding to EPA | $868M | New investment |
| Additional need estimated Nov. 2025 | At least $6B | Beyond funded work |
Small grants could consume extraordinary staff time
GAO documented IHS officials spending more than 80 hours helping one tribe secure an $8,000 grant, before ongoing reporting work. It also found that one IHS community-building program’s $10,000 funding limit dated to 1985.
The examples show why headline appropriations do not translate dollar-for-dollar into completed infrastructure. Tribes and agencies must navigate overlapping programs, applications and reporting requirements, sometimes for awards too small to justify the administrative burden.
New money did not erase the accumulated deficit
The original finding is the side-by-side scale: $4.368 billion in recent infrastructure-law funding did not prevent the IHS database from rising $1.2 billion in one year, and the agency still estimated at least $6 billion in additional need by November 2025.
That does not mean the new funding failed. Construction takes time, new deficiencies can be identified, and aging systems continue to deteriorate. The figures show that the documented need remained larger than the recent funding surge.
Method and limitations
The newsroom added the IHS and EPA infrastructure-law amounts, calculated the one-year change in IHS’s database and kept GAO’s later ‘at least’ estimate distinct. These figures measure different snapshots and should not be treated as a closed accounting ledger.
GAO made 12 recommendations and identified three matters for Congress. Project readiness, inflation, remoteness and operation costs vary across tribal systems, so national totals do not reveal conditions for any individual community.