ජලයේ ගුණාත්මකභාවය සහ අපජල කළමනාකරණය — උ/පෙළ ජීව විද්‍යාව

A. Water Contamination and Public Health Definition: Water contamination refers to the presence of harmful microorganisms, chemicals, or other substances in water that make it unsafe for human consumption or use, posing significant public health risks. Explanation: Water contamination occurs when pathogens enter water sources through various routes, making water unsafe for drinking. This contamination can happen through fecal matter from humans and animals, industrial waste, agricultural runoff, or improper waste disposal. Contaminated water serves as a medium for transmitting waterborne diseases like cholera, typhoid, and dysentery. The presence of harmful microorganisms in drinking water can lead to widespread illness outbreaks, especially in communities without proper water treatment facilities. Understanding contamination routes is crucial for preventing waterborne diseases and ensuring public health safety.