Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Drinking Water State Revolving Fund (DWSRF)

EPA's 7th Drinking Water Infrastructure Needs Survey and Assessment

EPA's 7th Drinking Water Infrastructure Needs Survey and Assessment (DWINSA)  assesses the nation’s public water systems’ infrastructure needs over the next 20 years and is used to allocate Drinking Water State Revolving Fund (DWSRF) grants, including Bipartisan Infrastructure Law funding, to states. The survey determined that drinking water systems will need $625 billion for pipe replacement, treatment plant upgrades, storage tanks, and other key assets to ensure the public health, security, and economic well-being of our cities, towns, and communities.

The 7th DWINSA also estimates that that needs of existing tribal drinking water infrastructure exceed $4 billion over the next 20 years and the survey results are used to allocate funds for tribes under the Drinking Water Infrastructure Grant Tribal Set-Aside (DWIG-TSA). The survey is comprised of infrastructure needs that are DWIG-TSA eligible, and include the installation of new drinking water infrastructure and the rehabilitation, expansion, or replacement of existing infrastructure.

  • Drinking Water Infrastructure Needs Survey and Assessment: 7th Report to Congress (pdf) (1.95 MB)
  • DWINSA: 7th Report to Congress Addendum - 2023 Update Lead Service Line Information (pdf) (1.38 MB)
  • 2023 Allotments for the Drinking Water State Revolving Fund based on the Seventh Drinking Water Infrastructure Needs Survey and Assessment
  • Fact Sheet: 7th DWINSA
  • FAQ: 7th DWINSA

7th DWINSA Lead Service Line Information

In accordance with Section 1452(h) of the Safe Drinking Water Act, for the first time, the 7th DWINSA included a survey on lead service lines.

The EPA recognized that states and communities continue to make progress on identifying lead services lines. To account for this rapidly developing data, the EPA provided states an opportunity to adjust their reported service line data in 2023. The updated information is used in distribution of DWSRF Bipartisan Infrastructure Law lead service line funding to states in 2024. Based on the updated data collected, the EPA projects a national total of 9.0 million lead services lines across the country.

Water systems and states have been working hard to identify the location and materials of their service lines and information on lead service lines has continued to evolve since the initial estimates of lead service line counts. The EPA’s 2021 Lead and Copper Rule Revisions required water systems to develop a lead service line inventory, which were submitted to states at the end of 2024.

  • Fact Sheet: 2023 Update to the 7th DWINSA Lead Service Line Questionnaire (pdf) (226.58 KB, September 2023)
  • Fact Sheet: Updated 7th Drinking Water Infrastructure Needs Survey & Assessment (pdf) (169.07 KB)
  • Fiscal Year 2024 Lead Service Line Allotments for the Drinking Water State Revolving Fund Provisions of the Bipartisan Infrastructure Law Funding (pdf) (369.08 KB, May 2024)

  • Approach for FY 2025 and FY2026 BIL LSLR Allotments: To use the best available information to allot FY 2025 and 2026 BIL LSLR funds, the EPA is updating its approach under the 7th DWINSA to estimate lead service line-specific need by incorporating the LCRR initial inventory state summary counts into the 7th DWINSA.  FY 2025 and FY 2026 BIL LSLR Allotments Memo (pdf) (272.86 KB, 1/17/2025)

  • DWSRF LSLR Capitalization Grants

DWINSA Data and Dashboards

EPA’s 7th DWINSA results show that improvements are primarily needed in:

  • Distribution and transmission: $422.9 billion to replace or rehabilitate aging or deteriorating pipelines and appurtenances.
  • Treatment: $107 billion to construct, expand or rehabilitate infrastructure to reduce contamination.
  • Storage: $56.1 billion to construct, rehabilitate or cover water storage reservoirs.
  • Source: $25.2 billion to construct or rehabilitate intake structures and wells, or purchase water rights.

Data Download:

  • 7th DWINSA Total Need (xlsx)
  • 7th DWINSA Consolidated System Level Traditional Needs Data (xlsx) (1.19 MB, December 2024)
  • Updated 7th DWINSA State Level Service Lines (xlsx) (47.31 KB)
  • Updated 7th DWINSA System Level Service Lines (xlsx) (281.6 KB, May 2024)

The dashboard below allow users to further explore data from the 7th DWINSA. Use the tabs at the top of the page to navigate between the 7th DWINSA data on States and Territories Need ($), Tribal Systems Need ($), and Service Line Material Types (#).

Contact Us to ask a question, provide feedback, or report a problem.
Last updated on January 17, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.