Modifiers matching biohazard:

• waterborne,

Simple categories matching waterborne:

• parasite,
• illness,
• biohazard,
• solid,
• disease,
• bacteria,
• chemical,
• microorganism,
• material,
• particle,
• pathogen,
• system,
• component,
• contaminant,
• agent,
• metal,
• salt,
• halide,
• organism,
• virus,
• waste,
• preservative,
• microbe,