Pick the channel before you write anything
Almost all water infrastructure money reaches a project through one of three channels. They have different applicants, different paperwork and different state contacts, so the channel decision comes before the application. EPA's Clean Water State Revolving Fund pays for wastewater, sewer and stormwater work. EPA's Drinking Water State Revolving Fund pays for treatment plants, distribution pipe, storage and source water protection. Both are mostly low-interest loans administered by a state agency rather than by EPA, and both can convert part of a loan to principal forgiveness for communities that qualify as disadvantaged. USDA Rural Development's Water and Waste Disposal programs serve communities of 10,000 or fewer and carry real grant percentages for low-income communities. They reach the projects a revolving fund usually will not take, including small systems that cannot carry a loan at all. The IIJA supplements sit on top of the two revolving funds. Congress directed $15 billion to lead service line replacement and $4 billion to emerging contaminants, chiefly PFAS, and states distribute both through their drinking water programs. Eligibility is the first gate. The revolving funds are for public entities, with some states admitting private systems. USDA Rural Development requires a public body or a nonprofit in a rural area. Tribal governments qualify across all three channels and have separate set-asides as well. Editing note: this page was rewritten for length and plain language on September 17, 2026. That pass did not re-verify the program background below, which is still the March 29, 2026 snapshot. Where a figure or an administering agency could not be confirmed against a primary source, this pass removed it instead of restating it: the year EPA's PFAS drinking water standard took effect, the IIJA Tribal water amount and the agency that runs it, and the Emergency Community Water Assistance Grant ceiling. Every amount below is background, not a current notice. Confirm it in the solicitation before you rely on it.
EPA Clean Water State Revolving Fund (CWSRF)
The CWSRF has financed municipal wastewater since 1987, and every repayment recapitalizes the fund, so the money a state can lend in a given year is much larger than that year's federal appropriation. The IIJA added $11.7 billion across FY2022 to FY2026, and states match federal capitalization at 20 percent. It funds treatment plant construction, upgrades and expansion, sewer rehabilitation and combined sewer overflow work, stormwater systems, water quality restoration for lakes and estuaries, nonpoint source programs, and green infrastructure such as wetlands, bioswales and permeable pavement. Applicants are local governments, municipalities, counties, special districts and state agencies. Private utilities are eligible in some states. Tribal governments qualify under separate provisions. Rates usually land between half and three quarters of market, terms run up to 30 years, and states may convert part of the principal to forgiveness for affordability-impaired communities, small systems, lead service line work and emerging contaminants. Applications go to your state environmental agency, never to EPA directly. Most states publish an annual priority list and an application window, with rolling intake for smaller projects. Ranking criteria usually combine water quality impact, public health need and affordability.
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EPA Drinking Water State Revolving Fund and the IIJA supplements
The DWSRF parallels the CWSRF on the drinking water side: treatment plants, distribution pipe, storage tanks and source water protection. The IIJA added $11.7 billion over five years, with two supplements layered on top. Lead service line replacement. The IIJA allocated $15 billion over five years, distributed to states as grants that flow through the DWSRF. Most states require a system to inventory its lead service lines before it applies, priority usually goes to systems serving low-income communities, and some states offer full principal forgiveness to qualifying small and disadvantaged systems. Emerging contaminants. The IIJA added $4 billion, aimed mostly at PFAS. A system facing a PFAS treatment obligation can fund the work through this money. Whether your system carries that obligation, and by when, comes from EPA's current PFAS drinking water rule and your state's compliance schedule, so read both before you size the request. Community water systems and nonprofit non-community systems qualify. Systems serving fewer than 10,000 people receive priority in most states under the affordability provisions. Applications go through your state drinking water program, which posts its own priority list and schedule.
USDA Rural Development Water and Waste Disposal
Water and Waste Disposal Loans and Grants, authorized under Section 306, is the flagship program for rural systems. It carries low-interest loans, typically between 1.375 and 3.25 percent depending on median household income, plus grants for communities that cannot repay full loan costs. Grant share can reach 75 percent of project cost for the poorest communities. Most funded projects fall between $100,000 and $25 million. Eligible applicants are municipalities, counties, special-purpose districts, associations and nonprofit corporations in rural areas with populations up to 10,000. Tribal governments qualify. Cities under 50,000 may qualify in limited circumstances. It funds construction, expansion or repair of water and wastewater systems, planning and design, purchase of an existing system, well drilling and spring development, and land and rights-of-way. It does not fund irrigation or land drainage. USDA Rural Development also funds solid waste disposal systems. Emergency Community Water Assistance Grants are a separate route for a community facing an imminent public health emergency from system failure. They fund repairs or interim measures and process faster than a standard application. The grant ceiling is set in the current USDA notice, so take it from there and not from a figure quoted anywhere, including here. Applications go through your USDA Rural Development State Office, which assigns a specialist to the project. Intake is year-round and funding depends on annual appropriations. The pre-application consultation is worth taking, because the specialist will say what documentation is missing and whether the project competes.
State programs worth checking
State programs sit on top of the federal channels and vary widely in size and timing. Check the current solicitation rather than a figure quoted anywhere, including here, because state appropriations move every cycle. California runs the widest set. The Department of Water Resources administers Proposition 1 Integrated Regional Water Management for regional coalitions and a floodplain management program. The State Water Board runs the CWSRF, small community drinking water funding for systems under 3,300 in disadvantaged areas, and small community clean water funding for communities under 20,000 below the state median household income. Florida's CWSRF is the state's largest infrastructure finance program, applied for through FDEP on a priority list covering wastewater, stormwater and nutrient reduction. Texas runs the two revolving funds plus the State Water Implementation Fund for Texas through the Texas Water Development Board, which lends against projects in the State Water Plan. Illinois EPA runs the revolving funds plus lead service line programs with principal forgiveness for disadvantaged communities, targeted at census-tract level. Pennsylvania runs drinking water, wastewater and stormwater loans and grants through PENNVEST, including disadvantaged community grants.
Tribal water infrastructure
Tribal governments reach water funding through the standard federal programs and through Tribal-specific channels. EPA makes direct grants to Tribal governments for planning, construction and operation through the Indian General Assistance Program and its Tribal Clean Water Act programs. Both revolving funds carry Tribal set-asides in most states, and some states run a separate Tribal application track. The IIJA also directed money to Tribal water and sanitation projects, including sanitation facilities construction run by the Indian Health Service. The IHS program prioritizes communities with severe health need, and its backlog is long. Confirm the current amount and which agency administers it with your IHS Area Office before you plan around it. Tribal governments also qualify explicitly for USDA Rural Development Water and Waste Disposal, through the same process municipalities use. Most Rural Development State Offices have a Tribal Coordinator.
Resilience and cybersecurity money
Under Section 1551 of the IIJA, EPA provides cybersecurity technical assistance to water utilities rather than grants: site assessments, incident response planning and training for utilities that cannot buy commercial services. Utilities apply through EPA Regional Offices. CISA offers no-cost assessments to critical infrastructure operators, including water utilities, through the Protective Security Advisor program and the Infrastructure Resilience Planning Framework. FEMA funds physical resilience rather than treatment capacity. Building Resilient Infrastructure and Communities and the Hazard Mitigation Grant Program pay for backup power, flood protection and seismic upgrades at utilities in disaster-prone areas. Applications go through the state emergency management agency, and the project has to sit in a FEMA-approved Hazard Mitigation Plan, so a community without a current plan starts there.
What the reviewing agency will ask for
Most applications in every channel want the same core file: an engineering feasibility study or preliminary engineering report, an environmental review, a financial capacity analysis for any loan, and evidence of need. For rural programs that evidence means census data, median household income comparisons and system condition reports. For lead service line money it means the service line inventory. The rejections and low rankings that state and federal reviewers describe cluster in a few places. Needs documentation that asserts risk without water quality results, failure records or a health authority letter. Applications submitted without the pre-application consultation, which for USDA and larger revolving fund projects usually means something required is missing. Project scope beyond what the community can operate, which reviewers read as operational risk and which has to be answered with a capacity case alongside the infrastructure case. Ineligible costs left in the budget, since the revolving funds pay for infrastructure and not operations, USDA does not fund irrigation, and FEMA does not fund deferred maintenance. Thin environmental review, which matters most where a project touches wetlands, floodplains or historic properties. Timing is the last constraint. Revolving fund cycles commonly run 6 to 12 months and have fixed windows, so a missed window costs a year. USDA Rural Development can take 12 to 24 months from application to obligation on projects over $1 million, and faster on smaller ones. Emergency routes move in 90 to 120 days when the emergency is real. Large projects are usually assembled from several sources at once, a Rural Development loan with a grant component, a state revolving fund loan, sometimes CDBG for connection costs, so plan the funding assembly as its own 12 to 36 month task.