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Endothall
Endothall is a synthetic herbicide primarily used to control aquatic plants and algae. It is not a food ingredient. Safety concerns focus on its toxicity through ingestion, skin contact, and environmental exposure. Classified as a potential human carcinogen by some agencies and known to cause gastrointestinal and kidney damage upon acute exposure.
Tracked contaminantUpdated Feb 21, 2026
Health score-4.0
-5Very bad5
Water guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Food and supplement guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Risks
Toxic if ingested, skin and eye irritation, potential carcinogen, environmental toxicity to aquatic life
Benefits
Effective aquatic weed control