Question: what are the different types of impurities present in water?
Answer: Microorganisms. Bacteria, algae and fungi all regularly interfere with sterile research applications. ... 
Viruses. ... 
Pyrogens. ... 
Dissolved Inorganic Ions. ... 
Dissolved Organic Compounds. ... 
Dissolved Gases. ... 
Suspended Particles. ... 
Colloidal Particles.