Toxic algae warnings for cyanobacteria in rivers
23 FEB 2026
By ENVIRONMENT CANTERBURY (KD)
HEALTH WARNING UPDATE ISSUED BY THE NATIONAL PUBLIC HEALTH SERVICE
The National Public Health Service have issued a health warnings for toxic algae.
The warnings follow detection of moderate to high cover of toxic algae (benthic cyanobacteria) in the:
Waihao River at Gum Tree Flat Rd (Don'...