How does contamination happen?

Contamination occurs when harmful substances or microorganisms are introduced into an environment, food, water, or other materials, compromising their purity and safety. This can happen through various means, including industrial waste discharge, agricultural runoff, improper handling, or poor sanitation practices. Additionally, cross-contamination can occur when clean items come into contact with contaminated surfaces or substances. Effective prevention measures, such as proper storage and hygiene practices, are essential to minimize contamination risks.