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.

Emergency

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • 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
    • Staff Directory

Breadcrumb

  1. Home
  2. Harmful Algal Blooms (HABs) in Water Bodies

Past HAB Webinars

Related Information

EPA Outreach on HABs

2022

  • Occurrence and Effects of HAB on Fish and Shellfish, March 22, 2022

2021

  • Webinar: U.S. EPA’s Tools for Managing CyanoHABs in Drinking and Recreational Waters, July 29, 2021
  • Managing Harmful Algal Blooms in Tribal Waters Webinar Series, March 10th, 16th and 18th, 2021
  • USEPA’s Harmful Algal Blooms Regional Workshops Summary Report, February 25, 2021

2019

  • EPA Preparing for HAB Season Webinar: Planning and Responding to Cyanotoxins in Recreational Waters, June 20, 2019
  • EPA Preparing for HAB Season Webinar: Planning and Responding to HABs in Coastal Waters, May 23, 2019
  • EPA Preparing for HAB Season Webinar: Planning and Responding to Cyanotoxins in Drinking Waters, April 25, 2019

2018

  • Region 4 Harmful Algal Bloom Southeastern Regional Workshop
    • HABs Pre-workshop Webinar - May 8th, 2018 (Agenda, Bios, Presentations and Recording)
    • HABs Workshop Day 1 - Drinking Water - May 14th, 2018 (Agenda, Bios, Presentations and Recording)
    • HABs Workshop Day 2 - Surface Water - May 15th, 2018 (Agenda, Bios, Presentations and Recording)
    • HABs Workshop Day 3 - Marine Water - May 16th, 2018 (Agenda, Bios, Presentations and Recording)
  • US EPA Drinking Water Webinar: Simultaneous Compliance: Considerations for Adjusting Treatment April 24, 2018

2017

  • US EPA Webinar: EPA’s Tools for Cyanobacteria and Cyanotoxins in Freshwater Systems June 6, 2017
  • Region 9 HABs Pre-meeting Webinar April 5, 2017

2016

  • Region 5 HAB CWA/SDWA Workshop and Public Meeting, Chicago, IL, April 2016
  • US EPA Public Meeting and Webinar: Managing Cyanotoxins in Drinking Water, April 29, 2016
  • Update on Development of Recreational Criteria for Cyanotoxins - February 22, 2016 (pdf) (5.09 MB)

2015

  • US EPA Public Meeting and Webinar: Input on Potential Actions to Prepare for and Respond to Cyanotoxins in Drinking Water, May 11, 2015

2014

  • Prevention, Control and Mitigation of Cyanobacteria and Cyanotoxins Webinar, May 14, 2014

2013

  • Linking Nutrient Pollution and HABs: State of the Science and EPA Actions, September 25, 2013
  • Perspectives on the Impact to Public Health of Harmful Algal Blooms, July 25, 2013
  • An Overview of Harmful Algal Blooms and their Impacts: June 25, 2013
  • US EPA Presentations EPA Webinar Human Health Risks Associated with Cyanobacteria and Cyanotoxins Exposure, May 23, 2013
  • US EPA Presentations EPA Webinar Human Health Risks Associated with Cyanobacteria and Cyanotoxins Exposure, May 22, 2013
  • US EPA Presentations EPA Workshop on Cyanobacteria and Cyanotoxins Occurrence and Detection Methods, July 2012

Harmful Algal Blooms (HABs) in Water Bodies

  • Basic Information on HABs
    • Learn about HABs
    • What Causes HABs
    • Exposure to HABs
    • Effects of HABs
    • What You Can Do
  • Trends, Monitoring Results & Forecasts
    • HAB Monitoring and Trends
    • HAB Forecasts
    • HAB Advisories
  • Managing HABs
    • Managing HABs in Surface Water
    • Managing Algal Toxins in Drinking Water
    • Managing Algal Toxins in Recreational Waters
  • HAB Laws, Tools and Data
    • HABHRCA
    • HAB Tools
    • HAB Data
  • HAB Methods & Research
    • HAB Methods
    • HAB Research
  • HAB Resources
    • EPA Outreach on HABs
    • Labs that Analyze for Cyanobacteria and Cyanotoxins
    • State & Tribal HAB Programs and Resources
    • State & Tribal Toxin Thresholds and Assessment Methods
    • HAB Resources from Other Federal Agencies and Organizations
    • Recent Papers, Upcoming Meetings and Webinars
Contact Us about HABs
Contact Us about HABs to ask a question, provide feedback, or report a problem.
Last updated on January 7, 2025
  • Assistance
  • Ayuda
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • Aide
  • Asistans
  • Korean
  • Assistência
  • Russian
  • Tulong
  • 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

Follow.