Arizona Harmful Algal Bloom Advisories

Algal blooms can contain toxins that are harmful to people and animals. ADEQ monitors Arizona’s recreational lakes for algal toxins and when algal blooms are reported. If water quality tests confirm algal toxins are higher than state health standards, ADEQ issues a Harmful Algal Bloom Water Quality Advisory. The Advisory urges boaters and recreational users to avoid direct physical contact with water until follow up tests confirm water quality is suitable for recreation. To protect the health of children, adults, pets and livestock, the Advisory provides important recommended actions and health guidance.

Algal Bloom - Healthy Recreational Water Habits

Enjoying the outdoors is an important part of an active, healthy lifestyle. ADEQ recommends following these simple, healthy habits in waters with visible algae:

  • STAY AWAY from algae and scum in the water – AND – keep children and pets away from algae in the water or on the shore. 
  • DO NOT DRINK or use this water for cooking.

Report Algal Blooms via Mobile App

The Arizona Water Watch mobile app provides an easy way to report signs of algal bloom or other water quality issues from any waterbody in the state, allowing ADEQ scientists to more quickly address them | Learn More >