Water Infrastructure Improvement Act

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The New York State Water Infrastructure Improvement Act (WIIA) provides competitive grants to help municipalities fund water quality infrastructure projects. WIIA grants are available for wastewater and drinking water projects that protect or improve water quality and/or protect public health. Municipalities may submit applications for multiple projects, including wastewater, sewer and drinking water projects.

Clean Water, Wastewater and Water Quality Projects

A municipality’s project or project phase would be awarded a grant up to $25 million, or 25% of net eligible project costs, whichever is less.

Drinking Water Projects

Eligible projects that address emerging contaminants above the State determined Maximum Contaminant Level (MCL) would be awarded 60% of net eligible project costs. A project that does not address emerging contaminants or addresses below the State determined MCL, including phases of the project, would be awarded the lesser of $3 million or 60% of net eligible project costs.


Eligible Applicants

  • Municipalities
  • County or town improvement districts
  • School districts (eligible for grants but not eligible for financing from the Clean Water State Revolving Fund)
  • Indian nations or tribes recognized by the state or the United States with a reservation wholly or partly within the boundaries of New York State
  • Public benefit corporations or public authorities that are empowered to construct and operate a water quality infrastructure project

Eligible Projects

Water quality infrastructure projects at municipally-owned sewage treatment works OR municipally-owned public water systems for construction, replacement or repair of infrastructure; or compliance with environmental and public health laws and regulations related to water quality.

Projects must meet the following criteria:

  • Result in construction of the project.
  • Not have started construction before October 1, 2019;
  • Not have completed construction before November 1, 2021.
  • All contracts must include EFC terms and conditions.

Eligible Costs

These costs are eligible as long as those costs result in a completed eligible infrastructure improvement project.

  • Project planning
  • Design
  • Construction services

More about Eligibility for WIIA

Evaluation Criteria

In evaluating projects, EFC and DOH will consider factors such as the water quality improvement or reduction in risk to public health, financial needs of the community, consideration for Environmental Justice Areas, readiness to advance construction, and the level of demonstrated community support. 

Municipalities are not required to submit an engineering agreement at the time of their grant application. However, if you already have one for your project, please submit it with the application as a sign of the project's readiness to advance to construction.

How Other Funding Sources Impact WIIA Grants and Awards

Complementing Your Grant with Financing from State Revolving Funds

You are not required to obtain financing from the State Revolving Funds (SRF) if you are awarded a grant. However, if you apply and indicate that you are using SRF financial assistance for the balance of your projectand your project is eligible, it will be listed on the Intended Use Plan (IUP) for the Clean Water State Revolving Fund or the Drinking Water State Revolving Fund, as applicable. Projects that are included on the annual list of an IUP can apply for SRF financing. Interest-free, low-interest and market-rate financing is available from the SRF depending on project eligibility, scoring and ranking.

You do not need to be listed on the IUP to apply for a WIIA grant. If your project is already listed on an Intended Use Plan, your project is eligible for a WIIA grant even if it is below the "hardship" subsidy line.

Funding From Other Agencies

Eligible projects that have received loans or grants through another funding agency are eligible for a WIIA grant. However, you should consult the other agency to see if the WIIA award impacts your funding.

Grant awards are calculated based on the "net total eligible project costs" which means the total project costs less any awarded grants from other funding sources and any ineligible costs. Grant funds from another funding agency will impact the net project costs on the calculated grant award amounts. Please submit a copy of your award letter from other funding agencies with your WIIA/IMG Application. If you are awarded a WIIA grant, and subsequently receive another grant for the same project, your grant would be recalculated to factor in any new co-funding (e.g. WQIP, CDBG). Loan financing from another funding agency would not affect the award amount of a WIIA or Intermunicipal grant.


All project contracts that are to be paid for with WIIA funds must comply with EFC's program requirements and must include the required contractual language from the applicable EFC bid packet. Any contracts, including those executed prior to grant application, that do not include the required contractual language will be disqualified from funding.

FAQ about WIIA and Program Requirements

EFC is committed to promoting participation opportunities for New York State ("State") certified minority- and women-owned business enterprises ("MWBEs") and federal disadvantaged business enterprises ("DBEs"), and equal employment opportunities ("EEO") for minority group members and women in the performance of EFC contracts as well as contracts that receive financial assistance through EFC's various programs.


The goal of the Service-Disabled Veteran-Owned Business Act is to encourage and support eligible SDVOBs to play a greater role in the state's economy by increasing their participation in New York State's contracting opportunities. 


Applicable only if the applicant is seeking either Clean Water or Drinking Water SRF Financing.

The utilization of iron and steel products that are produced in the United States is required for construction, alteration, maintenance, or repair of public water systems or treatment works funded wholly or in part by SRF financial assistance. 


Applicable only if the applicant is seeking either Clean Water or Drinking Water SRF Financing.

Requirements regarding prevailing wages, hours of work, and rates of pay are required for contracts in excess of $2,000 and are funded wholly or in part by SRF financial assistance.