Arizona Harmful Algal Blooms

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. 

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 >