Health Assessment Workspace Collaborative (HAWC)

EPA HAWC is an interactive, expert-driven, content management system for human health assessments that is intended to promote transparency, data usability, and understanding of the data and decisions supporting an environmental and human health assessment. Specifically, EPA HAWC is an application that allows the data and decisions supporting an assessment to be evaluated and managed in modules (e.g., study evaluation, summary study data) that can then be publicly accessed online.

On this page:

• Getting started with HAWC
• HAWC Release Notes

What is EPA HAWC ?

EPA HAWC is a modular, web-based content management system designed to store, display, and synthesize multiple data sources for the purpose of supporting the development of human health and environmental risk assessments of hazardous pollutants.

Key EPA HAWC modules include study quality evaluation, data extraction (human epidemiology, animal bioassay, and in vitro), evidence synthesis and dose-response analysis.

Intended for human health and environmental risk assessors, EPA HAWC allows collaboration within assessment teams comprised of managers, team-members, and reviewers to synthesize this information.

EPA HAWC supports systematic review methodology to increase the scientific rigor and transparency by using a predefined, multi-step process to identify, and critically evaluate the underlying evidence. It serves as a repository for the study quality decisions and extracted data used to support an assessment and provides rich, interactive visuals of the results both within and across the evidence.

EPA HAWC addresses these challenges serving as a repository for the study quality decisions, extracted data and providing rich interactive visuals of the results within and across the evidence. This helps collaborators (teams) provide input and finalize the results, which can be extracted for papers or reports.

• Learn more from the EPA HAWC Frequent Questions page.

Getting started with EPA HAWC

Anyone can explore the public assessments listed in EPA HAWC by searching “HAWC Public Assessments”. Once there, you can drill down into the various assessments and export the data in Excel, or figures in PDF or other formats.

• Search the EPA HAWC Public Assessments

If you want to create an assessment yourself, you'll need to request an account to join EPA HAWC as a member. Once logged in with your account, you'll be able to create new public assessments or search on available assessments, see the HAWC Frequent Questions and HAWC Resources for additional help.

• Access the EPA HAWC User Login

---

Quarterly Release Notes and the History of HAWC

Learn about the history of the EPA HAWC or scan this list of updates and recent additions.

Date	Milestone
Jan 2025	EPA released EPA HAWC quarterly updates (2024-Q4).
Oct 2024	EPA released EPA HAWC quarterly updates (2024-Q3).
Jul 2024	EPA released EPA HAWC quarterly updates (2024-Q2).
Apr 2024	EPA released EPA HAWC quarterly updates (2024-Q1).
Feb 2024	EPA released EPA HAWC quarterly updates (2023-Q4).
Oct 2023	EPA released EPA HAWC quarterly updates (2023-Q3).
Aug 2023	EPA released EPA HAWC quarterly updates (2023-Q2).
Apr 2023	EPA released EPA HAWC quarterly updates (2023-Q1).
Jan 2023	EPA released EPA HAWC quarterly updates (2022-Q4).
Oct 2022	EPA released EPA HAWC quarterly updates (2022-Q3).
Jul 2022	EPA released EPA HAWC quarterly updates (2022-Q2).
Apr 2022	EPA released EPA HAWC quarterly updates (2022-Q1).
Feb 2022	EPA released EPA HAWC quarterly updates (2021-Q4).
Sep 2021	EPA released EPA HAWC quarterly updates (2021-Q3).
Jun 2021	EPA released EPA HAWC quarterly updates (2021-Q2).
Mar 2021	EPA released EPA HAWC quarterly updates (2021-Q1).
Dec 2020	EPA released EPA HAWC quarterly updates (2020-Q4).
Sep 2020	EPA released EPA HAWC quarterly updates (2020-Q3).
Jun 2020	EPA released EPA HAWC quarterly updates (2020-Q2).
Mar 2020	EPA released EPA HAWC quarterly updates (2020-Q1).
Sep 2018	EPA begins using EPA HAWC for IRIS assessment and other health assessment at EPA.
Aug 2018	EPA collaborated with NIH scientists and deployed an early version of EPA HAWC for their scientists.
Jan 2018	EPA established a workgroup to look into a method for implementing HAWC at the EPA to conduct systematic review for IRIS Assessments. This coincided with changes in the IRIS program to implement systematic review earlier in the development process.
Jan 2015	HAWC development continued at the NIH/NIEHS/NTP in the Office of Health Assessment and Translation (OHAT). HAWC was presented at various Risk Assessment conferences and began being used by other agencies, organizations, and research groups.
Sep 2012	HAWC was originally created as a research thesis from the University of North Carolina (UNC), Chapel Hill.