Harmful Algal Blooms: Risks for Food in Utah

Authors

• Jose Brandao, Utah State UniversityFollow
• Sarah Erwin, Utah State University ExtensionFollow
• Stephanie VaughnFollow
• Clare Entwistle, Utah State UniversityFollow

Document Type

Factsheet

Publisher

Utah State University Extension

Publication Date

7-16-2026

First Page

1

Last Page

6

Abstract

Harmful algal blooms (HABs) are a problem because they can produce toxins that make water unsafe for people, animals, and the environment. In recent years, HABs have emerged as a growing concern in freshwater systems throughout Utah, including irrigation canals, reservoirs, and livestock ponds. HABs in freshwater are caused by cyanobacteria, also called blue-green algae. These microorganisms can release dangerous toxins that can harm swimmers, pets, and the food supply. Unlike foodborne pathogens, these toxins cannot be removed by boiling, cooking, or washing the food. Therefore, regular monitoring is essential to detect HABs early and reduce exposure risks. This fact sheet how HABs contaminate food and offers ways to reduce the risks.

Recommended Citation

Brandao, J., Erwin, S., Vaughn, S., & Entwistle, C. (2026). Harmful algal blooms: Risks for food in Utah [Fact sheet]. Utah State University Extension.