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Source: https://www.epa.gov/DWdata

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Drinking Water Data and Tools

slide 1 of 3 * ## Public Water System Service Areas EPA and several other government and independent organizations have collected or estimated service area boundaries. Learn about service areas * ## Primacy Agency Drinking Water Data Users can find a list of primacy agencies' publicly maintained drinking water databases, whose data may be more-up-to date and detailed than at the EPA. Find Primacy Agency Data * ## Safe Drinking Water Information System (SDWIS) Federal Reporting Services This system offers the capability to query the Safe Drinking Water Information System (SDWIS) Fed Data Warehouse via report filters and various reporting options. Explore SFRS * ## Public Water System Service Areas EPA and several other government and independent organizations have collected or estimated service area boundaries. Learn about service areas

123 Two girls give thumbs up while drinking water The EPA's Drinking Water Data website provides a clearinghouse for drinking water related data and data analysis tools. This one-stop website allows users to learn more about what data are available and use the data to increase their understanding of drinking water across the nation. Datasets cover drinking water quality, loan and grant information, unregulated contaminants, and more. Some of the datasets in this clearinghouse help fulfill the EPA's requirement under the Safe Drinking Water Act to assemble and maintain a National Contaminant Occurrence Database. Learn more about the National Contaminant Occurrence Database. Use the tools on this page to dive into the most relevant drinking water datasets and data tools. Use the category drop down to filter by topic or sort by alphabetical order. Not sure where to begin? Check out the Drinking Water Data & Tools Guide. Search Category - Select - Additional Resources Compliance Drinking Water Standards ECHO Tools Infrastructure Funding Infrastructure Needs PFAS Primacy Agency Data Source Water System Resiliency & Emergency Response Technical Assistance & Capacity Building Unregulated Contaminants Water Provider Information Sort Tools Default A to Z Z to A View Select Displaying 36 of 36 cards * ### Safe Drinking Water Information System White water tower with trees and grass SDWIS is the EPA’s system of record for Safe Drinking Water Act data; it includes data on public water system characteristics and compliance with SDWA regulations. * Compliance * Drinking Water Standards * Primacy Agency Data Interact With SDWIS * ### State Revolving Fund Public Portal Technical expert open gate valve on 500mm drink water pipes joined with black multi joint members into old pipeline system. Users can access data from both the drinking water and clean water SRF programs through interactive reports, dashboards, and maps. * Infrastructure Funding * Primacy Agency Data * Technical Assistance & Capacity Building Explore the SRF Public Portal * ### Fifth Unregulated Contaminant Monitoring Rule Data Finder Filling up a glass with clean drinking water from kitchen faucet Users can easily search, summarize, and download the available analytical results from the fifth UCMR. * Unregulated Contaminants * PFAS Explore the UCMR 5 Data Finder * ### Drinking Water Mapping Application to Protect Source Waters Colorado river flowing through beautiful mesas in Moab, Utah Water professionals can find important information related to protecting drinking water sources with the DWMAPS tool. * Source Water Explore DWMAPS * ### Public Water System Service Areas Arial view of community along lake. Users can view the geographic areas supplied with drinking water by community water systems. * Water Provider Information Learn About Service Areas * ### Enforcement and Compliance History Online PFAS Analytic Tools Doubts and uncertainties about dangerous PFAS Perfluoroalkyl and Polyfluoroalkyl Substances used due to their enhanced water-resistant properties. Analyze various PFAS data from a variety of sources in a region, state, or community with the ECHO PFAS Analytic Tools. * Compliance * ECHO Tools * Primacy Agency Data * PFAS Explore ECHO PFAS Analytic Tools * ### Aircraft Drinking Water Rule Compliance Reports Cup Of Water In Airplane, Travel Users can access ADWR data through reports; data which includes: aircraft inventory information, drinking water sample results, and violation information. * Compliance Explore ADWR Compliance Reports * ### Archival Data Finder for the Unregulated Contaminant Monitoring Rule Girl filling glass with water from tap in kitchen Users can easily search, summarize, and download analytical results from past cycles of the UCMR. * Unregulated Contaminants * PFAS Explore the UCMR Archival Data Finder * ### AWIA Section 2013/SDWA Section 1433 Compliance Data # Users can access community water system compliance data for requirements to certify the Risk and Resilience Assessment (RRA) and Emergency Response Plan (ERP) under section 1433 of the Safe Drinking Water Act (SDWA), which was amended by section 2013 of America's Water Infrastructure Act (AWIA). * System Resiliency & Emergency Response Explore AWIA RRA/ERP Compliance Data * ### Drinking Water Models, Tools, and Methods Woman scientist performing PFAS analytical method Water professionals can visit this page to find a variety of models, tools, and analytical methods that support the provision of safe drinking water to communities. * Source Water * System Resiliency & Emergency Response * PFAS Visit Drinking Water Models, Tools, and Methods * ### Enforcement and Compliance History Online EPA/State Drinking Water Dashboard Skyline cityscape over lake with reflection. Analyze summary trends for key regulatory activities from EPA and implementing states, tribes, and territories with the ECHO EPA/State Drinking Water Dashboard. * Compliance * Drinking Water Standards * ECHO Tools * Primacy Agency Data Explore ECHO Drinking Water Dashboard * ### Enforcement and Compliance History Online Facility Search Twin water towers stand over Upper Arlington, OH, with a suburban backdrop. Analyze public water system compliance with drinking water regulations with the ECHO Facility Search. * Compliance * Drinking Water Standards * ECHO Tools * Primacy Agency Data Explore ECHO Facility Search * ### Environmental Resilience Tools Wizard Engineers working on water treatment plant with laptop and measuring sensors Water professionals will find a variety of tools that can help address disaster mitigation, preparedness, response, and recovery. * System Resiliency & Emergency Response * Technical Assistance & Capacity Building Explore Environmental Resilience Tools Wizard * ### EPA Data Hands hold papers with graphs and tables printed on them Users interested in data for other topics like air, land, and chemicals can find additional EPA data resources and understand how EPA uses these data. * Additional Resources Discover additional EPA Data * ### EPA Datasets Data dot gov logo. American flag on left of word mark Users can find the EPA's public catalog of available datasets on data.gov which provides an alternate way to find and access EPA datasets. This site also hosts datasets from across all the federal government which helps with data transparency and access. * Additional Resources Explore EPA DatasetsExit EPA’s Website * ### Fifth Drinking Water Infrastructure Needs Survey and Assessment Red and blue water access point in the asphalt Users can explore the fifth DWINSA results based on findings from 2011 through a comprehensive report. For the latest DWINSA results, see the seventh DWINSA. * Infrastructure Needs Explore the 5th DWINSA * ### Find Your Local Consumer Confidence Report # Users can search EPA's database to find their annual CCR that includes information on source water, the levels of detected contaminants, and compliance with drinking water rules. * Compliance * Drinking Water Standards * Primacy Agency Data Find Your Local CCR * ### Government Performance and Results Act Tool Iconic water tower located in Meridian Idaho with fall colored trees. Users can find summary data of EPA’s drinking water program’s performance measures and results. * Compliance * Drinking Water Standards * Primacy Agency Data Explore GPRA Tool * ### How's My Waterway? Aerial view of a small town called Conway, located outside of Myrtle Beach, South Carolina. Users can find information about the condition of their local waters based on data submitted to the EPA and other relevant data sets. * Compliance * Drinking Water Standards * Primacy Agency Data * Source Water * Water Provider Information Visit How's My Waterway? * ### Local Infrastructure Investment Stories # The EPA’s Investing in America’s Water Infrastructure StoryMap shares examples of how Infrastructure Investment and Jobs Act funding is being used in communities across the country for technical assistance and SRF projects. * Infrastructure Funding * Technical Assistance & Capacity Building Explore Local Infrastructure Investment Stories * ### National Contaminant Occurence Database Clean water in a glass laboratory flask on wooden table on mountain river background. The NCOD houses the Six-Year Review of national drinking water regulations data, the unregulated contaminant occurrence data, and the ambient and/or source water data. * Compliance * Drinking Water Standards * Primacy Agency Data * Source Water * Unregulated Contaminants Learn more about the NCOD * ### Primacy Agency Drinking Water Data Aerial view of the picturesque downtown urban area. Users can find a list of primacy agencies' publicly maintained drinking water databases, whose data may be more-up-to date and detailed than at EPA. * Compliance * Drinking Water Standards * Primacy Agency Data Discover Primacy Agency Drinking Water Data * ### Private Domestic Well Map (2020) Deep water well set up in front of new home construction. This interactive map allows users to view estimates for housing units using domestic wells for household water supply for 2020. * Source Water Explore the Private Domestic Well MapExit EPA’s Website * ### Report on the Environment - Drinking Water A little girl drinking water directly from the kitchen tap at home. Users can view drinking water standards violation trends in community water systems through a series of interactive exhibits. * Compliance * Drinking Water Standards * Primacy Agency Data Explore the ROE - Drinking Water * ### Seventh Drinking Water Infrastructure Needs Survey and Assessment Water supply access point, rusty sewer cover on ground, public utility on road of rock ground in city Users can explore the latest DWINSA results from the seventh DWINSA data through easy-to-use visualizations based on findings from 2021. * Infrastructure Needs Explore the 7th DWINSA * ### Sixth Drinking Water Infrastructure Needs Survey and Assessment Water main Users can explore the sixth DWINSA results data through easy-to-use visualizations based on findings from 2015. For the latest DWINSA results, see the seventh DWINSA. * Infrastructure Needs Explore the 6th DWINSA * ### Sole Source Aquifer Map Water flows out from a large aquifer. Users can find drinking water sole source aquifer locations through an interactive map. * Source Water Explore the Sole Source Aquifer MapExit EPA’s Website * ### Underground Injection Control Well Inventory Oil well. The equipment and technologies on oil fields. Users can find an inventory of injection control wells collected by the UIC program annually. * Source Water Explore the UIC Injection Well Inventory * ### Underground Storage Tank Finder Horizontal close-up shot of four partially buried underground fuel storage tanks at new gas station convenience store construction. Users can find a comprehensive, national map of underground storage tank (UST) facilities and UST release data, including locations and attributes of active and closed UST facilities. * Source Water Explore the UST FinderExit EPA’s Website * ### Voluntary School and Child Care Lead Testing and Reduction Grant Program Dashboard School hallway with water fountain fixed to the right wall. Users can learn more about the progress and accomplishments of the Voluntary School and Child Care Lead Testing and Reduction Grant Program. * Infrastructure Funding Explore the Grant Program Dashboard * ### Water Finance Clearinghouse # The Water Finance Clearinghouse includes two searchable databases including funding sources and resources on financing mechanisms to help communities access capital to meet their water infrastructure needs. * Infrastructure Funding * Technical Assistance & Capacity Building Explore the Water Finance Clearinghouse * ### Water Infrastructure and Capacity Assessment Tool Closeup security water valve system of water tank tower and shadow background. Water ICAT is an interactive map that helps users identify drinking water and wastewater utilities that may benefit from water infrastructure technical or capacity development assistance. * Infrastructure Needs * Technical Assistance & Capacity Building Explore the Water ICAT * ### Water Infrastructure Finance and Innovation Act Fund Facts Dashboard Woman engineer, in yellow safety vest and white hard hat, works at wastewater treatment plants. Users can explore the WIFIA program's portfolio of closed and pending loans. * Infrastructure Funding Explore the WIFIA Fund Facts Dashboard * ### Water Infrastructure Resilience Tools Mechanical engineer Checking of centrifugal pump in pump room. worker working in plant room. Water professionals will find a variety of tools that can help strengthen their water system infrastructure resiliency. * System Resiliency & Emergency Response * Technical Assistance & Capacity Building Explore Water Infrastructure Resilience Tools * ### Water Modeling Tools for Decision Support Asian male industrial engineer working Inspection and maintenance of factory water storage pipes or water systems in engineering plants. Water professionals will find a variety of tools that can help support drinking water system emergency response, treatment technologies, and more. * System Resiliency & Emergency Response * Technical Assistance & Capacity Building Explore Water Modeling Tools for Decision Support * ### Water Utility Response On-The-Go Plus Road spurt water beside traffic cones Water professionals can use this mobile application to find information and tools that may be needed while responding to emergency incidents. * System Resiliency & Emergency Response Learn more about Water Utility ROTG Plus

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Drinking Water Data & Tools Guide

This page will help guide you to the most relevant drinking water datasets and data tools based on the question you are seeking to answer. The guide covers all the datasets and tools listed in EPA’s Drinking Water Data and Tools Gallery. Contact Us About Drinking Water Data and Tools to ask a question, provide feedback, or report a problem. Last updated on March 24, 2026 Welcome! Please share your feedback on how we can make www.epa.gov work better for you. A red asterisk (*) indicates a required field.

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