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. 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 HAB Advisory Decision Methods
    • HAB Resources from Other Federal Agencies and Organizations
    • Recent Papers, Upcoming Meetings and Webinars
Contact Us about HABs
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on May 20, 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.