Cyanobacteria or Suspected Harmful Bloom

What this symptom may mean

Warm, nutrient-rich, stable water can favour cyanobacteria. Some blooms may produce toxins, but appearance cannot confirm toxicity.

Information and testing priorities

• Restrict exposure and use qualified identification and toxin testing under local health guidance. Record wind, scum location, temperature and recent changes.

Responsible treatment pathway

• Follow official health direction first. A control plan may address nutrient inputs, monitoring, circulation and appropriately selected ultrasound, but treatment must not spread or lyse a bloom without risk review.

Urgency

Urgent where people, pets, livestock or aquatic life may be exposed.

What to send Puroxi

• Complete laboratory report and sampling date
• Source, intended use, volume, flow and photographs
• History of the symptom and existing equipment or treatment
• Required outcome and any applicable health, animal, process or discharge requirements

Important technical notice

Possible causes are not a diagnosis. Do not use this page to declare water safe, prescribe a chemical dose or delay emergency, health, veterinary or regulatory action. Testing and site-specific review are required.