Key Takeaways
- $55 billion allocated for water infrastructure through IIJA over FY2022–2026 — the largest federal water investment in U.S. history
- CWSRF and DWSRF are the primary delivery mechanisms — apply through your state environmental agency, not directly to EPA
- USDA Water and Waste Disposal grants are specifically for rural communities under 10,000 — up to $500K grant + low-interest loans, less competitive than SRF
- Lead service line replacement has dedicated IIJA funding — prioritized for low-income communities; EPA directly administers
- PFAS remediation is a 2026 priority — dedicated EPA and USDA funding for communities with PFAS contamination in drinking water
The Scale of Available Funding
Water infrastructure is one of the few areas where federal grant and low-cost loan funding dramatically outpaces what local governments can raise on their own. The Bipartisan Infrastructure Law put $55 billion into water over five years. That money is actively flowing through state programs right now — and many eligible communities haven't applied because they don't know the application goes to the state, not Washington. If your municipality has water or wastewater infrastructure needs, this guide will show you exactly where to apply.
The SRF System: How Federal Water Money Actually Flows
The Clean Water State Revolving Fund (CWSRF) and Drinking Water State Revolving Fund (DWSRF) are the backbone of federal water infrastructure financing. Here's how it works: EPA provides capitalization grants to each state. States match 20% and then lend the money to local municipalities, utilities, and water systems at below-market interest rates — typically 1–2% compared to 4–6% for municipal bonds. States can also provide principal forgiveness (essentially a grant, not a loan) to disadvantaged communities.
The IIJA supercharged this system. Between FY2022 and FY2026, IIJA added over $11 billion in additional CWSRF capitalization and over $11 billion in additional DWSRF capitalization, plus $15 billion specifically for lead service line replacement and $5 billion for PFAS contamination remediation. This is real money available right now — but the application goes to your state's department of environmental quality, health, or natural resources. Not to EPA directly.
| Program | Type | Scale | Apply To |
|---|---|---|---|
| CWSRF (Clean Water SRF) | Low-interest loans + principal forgiveness | $8B+/year capitalization | State environmental agency |
| DWSRF (Drinking Water SRF) | Low-interest loans + principal forgiveness | $6B+/year capitalization | State environmental agency |
| IIJA Lead Service Line | Grants | $3B/year through 2026 | State SRF administrator |
| IIJA PFAS/Emerging Contaminants | Grants | $1B/year through 2026 | State SRF administrator |
| USDA Water & Waste Disposal | Grants up to $500K + loans | ~$600M/year | USDA Rural Development state office |
| EPA WIFIA | Low-interest loans (large projects only) | $9B+ loan authority | EPA directly (projects >$5M) |
| EPA CWBG (Clean Water Block Grant) | Grants | New IIJA category | State programs |
USDA Water and Waste Disposal: Best for Small Rural Systems
For small rural communities — towns under 10,000 — the USDA Water and Waste Disposal (WWD) program is often the most accessible path to water infrastructure grants. Unlike SRF, which runs through state programs with state-specific priority rankings, USDA WWD applications go directly to your state's USDA Rural Development office and are evaluated on a continuous basis rather than an annual competition cycle.
Grant amounts up to $500,000 are available for communities meeting income-based eligibility requirements. For very low-income communities (median household income below 80% of state or national nonmetro median), grants can cover up to 75% of project cost. The remainder can typically be funded with a USDA low-interest loan from the same program, eliminating the need for any other financing. Eligible projects include water source development, storage, treatment, distribution systems, and wastewater collection and treatment. Contact your state USDA Rural Development office directly to discuss eligibility before submitting a formal application — USDA staff are genuinely helpful in pre-application consultations.
Lead Service Line Replacement: A Dedicated Priority
Lead service line replacement received $15 billion from IIJA — the single largest dedicated allocation in the law. EPA's Lead and Copper Rule requires systems to replace all lead service lines, and the federal government is funding much of that replacement through state DWSRF programs. Low-income communities and environmental justice communities receive priority. If your water system has lead service lines, your state DWSRF administrator should be your first contact — the funding exists and states are actively looking for eligible projects.
PFAS Remediation Funding
Per- and polyfluoroalkyl substances (PFAS) contamination has emerged as a national drinking water crisis, and federal funding is available to address it. IIJA allocated $5 billion specifically for emerging contaminants including PFAS through DWSRF. EPA set a maximum contaminant level (MCL) for PFAS in drinking water in 2024, creating both a compliance mandate and funding opportunity for affected utilities.
If your water system has PFAS contamination at or near EPA MCL levels, your state DWSRF program should have PFAS-specific set-asides. Apply through your state program. EPA also directly provides technical assistance to small utilities dealing with PFAS through its Environmental Finance Centers.
How to Start Your Water Infrastructure Grant Application
- Identify your state SRF administrator — search "[your state] CWSRF" or "[your state] DWSRF" — this is your primary contact for IIJA water funding
- Get on the Project Priority List (PPL) — SRF projects are ranked annually; you must submit an application to be placed on the PPL before the funding cycle
- For rural communities: contact your state USDA Rural Development office for WWD pre-application consultation — faster and simpler than SRF for eligible small systems
- Document your community's income level — disadvantaged community designation determines principal forgiveness eligibility; gather census income data before applying
- For PFAS/lead: contact EPA Region office for technical assistance — they have staff specifically assigned to help utilities access IIJA funding for these priorities