HAWC

Free plan Web

What HAWC is

HAWC is a web-based system for organizing information used in human health and environmental risk assessments. It supports study quality evaluation, data extraction from human epidemiology, animal bioassay, and in vitro studies, evidence synthesis, and dose-response analysis. Assessment teams can assign managers, members, and reviewers different permissions to manage, view, or edit content. Published material can be viewed by anyone without an account; collaborating on an ongoing assessment with EPA scientists requires an account and approved access. Interactive visualizations connect study, experiment, endpoint, and dose information. Available assessment datasets can be downloaded as Microsoft Excel files, and figures can be exported to PDF or other formats. EPA uses HERO, SWIFT Review, and DistillerSR for literature searches and screening before synthesis in HAWC. Benchmark dose modeling is carried out endpoint by endpoint at the EPA HAWC chemical manager’s discretion, and released outputs can be viewed publicly. HAWC is free and supports most modern browsers, with Google Chrome preferred.

Who it suits

HAWC suits human health and environmental risk assessors working in teams. It also allows the public to view published assessment content without an account.

What it does well

Free to use.
Supports human, animal, and in vitro evidence assessment.
Role-based access for assessment teams.
Exports datasets to Excel and figures to PDF or other formats.
Published content is viewable without an account.

What to know first

Ongoing collaboration requires an account and approved access.
Visualizations are selected by the chemical project manager.
Internet Explorer functionality errors have been reported.

Limits

Creating assessments requires requesting an account and access to the EPA HAWC user group. Benchmark dose modeling is performed endpoint by endpoint at the EPA HAWC chemical manager’s discretion; available visualizations are selected at the chemical project manager’s discretion.

Plans

Plan	Billed and limits	Price
EPA HAWC	Public assessments can be explored by anyone · Creating assessments requires requesting an account	Free

As hawc.epa.gov lists them, read 7 Oct 2026. The maker's own page has the final word.

Getting started

Open the HAWC website in a modern web browser; Google Chrome is preferred.
Explore published assessments without an account.
To collaborate on an ongoing assessment with EPA scientists, create a Login.gov account.
Request access to the EPA HAWC user group and wait for an EPA system administrator to review it.
Use assigned access to join a team, create assessments, or manage users, depending on your role.

Verdict

HAWC brings assessment data, collaboration, and evidence synthesis into a browser-based system. Public viewing is open, while participating in ongoing EPA assessments requires approved account access.

Questions

How much does HAWC cost?

The EPA HAWC plan is free.

Can anyone use HAWC without an account?

Anyone can view published HAWC content without an account. Collaborating on an ongoing assessment with EPA scientists requires an account and approved access.

Which platforms does HAWC support?

HAWC is web-based and supports most modern browsers. EPA prefers Google Chrome and reports functionality errors with Internet Explorer.

What evidence and assessment work does HAWC support?

Its modules cover study quality evaluation, data extraction for human epidemiology, animal bioassay and in vitro studies, evidence synthesis, and dose-response analysis.

Can HAWC export assessment information?

Available assessment datasets can be downloaded as Microsoft Excel files, and figures can be exported as PDF or other formats.

Which tools are used with HAWC for literature searches?

EPA uses HERO, SWIFT Review, and DistillerSR for literature searches and screening before synthesizing study information in HAWC.

Facts from HAWC's own pages

Account access: External users create a Login.gov account and request access to the EPA HAWC user group; an EPA system administrator reviews the request. · epa.gov, 7 Oct 2026
Assessment modules: Key modules include study quality evaluation, data extraction for human epidemiology, animal bioassay, and in vitro studies, evidence synthesis, and dose-response analysis. · epa.gov, 7 Oct 2026
Browser support: HAWC is supported by most modern browsers, with Google Chrome preferred; functionality errors have been reported in Internet Explorer. · epa.gov, 7 Oct 2026
Collaboration: Managers, team members, and reviewers can collaborate on assessments, with access levels assigned according to their roles and needs. · epa.gov, 7 Oct 2026
Dose-response modeling: Benchmark dose modeling is performed endpoint by endpoint at the discretion of the EPA HAWC chemical manager, and released outputs can be viewed publicly. · epa.gov, 7 Oct 2026
Exports: Users can download available assessment datasets as Microsoft Excel files and export figures in PDF or other formats. · epa.gov, 7 Oct 2026
Export use: Assessment results can be extracted for papers or reports. · epa.gov, 7 Oct 2026
Founded: 2012 · hawc.epa.gov, 28 Sept 2026
Integrations: EPA says assessment literature searches and screening use HERO, SWIFT Review, and DistillerSR before HAWC is used to synthesize study information. · epa.gov, 7 Oct 2026
Intended users: HAWC is intended for human health and environmental risk assessors working in assessment teams. · epa.gov, 7 Oct 2026
Key modules: Its modules include study quality evaluation, data extraction for human epidemiology, animal bioassay and in vitro studies, evidence synthesis, and dose-response analysis. · epa.gov, 7 Oct 2026
Notable limit: Available visualizations are selected at the discretion of the chemical project manager and are typically intended to accompany assessment text. · epa.gov, 7 Oct 2026
Platform support: HAWC supports most modern browsers; EPA prefers Google Chrome and reports functionality errors with Internet Explorer. · epa.gov, 7 Oct 2026
Public access: Anyone can view published HAWC content without an account; an account is required to collaborate on an ongoing assessment with EPA scientists. · epa.gov, 7 Oct 2026
Purpose: HAWC is a web-based content management system for storing, displaying, and synthesizing data for human health and environmental risk assessments. · epa.gov, 7 Oct 2026
Roles: Account holders may receive read-only access, create assessments or join a team, or manage users' access as a project or chemical manager. · epa.gov, 7 Oct 2026
Security and roles: Assessment setup supports tiered access and role-based authorization for managing, viewing, and editing content. · epa.gov, 7 Oct 2026
Technical support: Users can use the EPA HAWC contact form to ask questions, provide feedback, or report problems. · epa.gov, 7 Oct 2026
Transparency: The application manages assessment data and decisions in modules that can be accessed online by the public when made available. · epa.gov, 7 Oct 2026
Visualizations: HAWC provides interactive visualizations of results within and across evidence. · epa.gov, 7 Oct 2026

Where HAWC stands on Freedom251

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