Water Contamination: Major Causes, Health Risks And Why It Must Be Taken Seriously

Water contamination must be taken seriously. If left unchecked, it poses a significant threat to public health and the environment, and could lead to severe consequences in the coming years.

Water contamination occurs when harmful substances mix with water bodies such as rivers, lakes, and groundwater, making the water toxic, unsafe, and unfit for drinking, cooking, and daily use. Contaminated water not only poses a serious risk to human health but is also extremely dangerous for aquatic life. In most cases, water pollution is the result of human activities, including industrial discharge, agricultural practices, and improper waste disposal.

Common sources of water contamination include agricultural runoff containing pesticides and fertilisers, untreated sewage, toxic chemicals, heavy metals, oil spills, and the improper disposal of plastics and solid waste. These pollutants introduce harmful microbes and chemical contaminants into the water, which eventually enter the human body.

Dr Goma Bali Bajaj, Consultant and HOD, Emergency Department, Fortis Hospital, Greater Noida, explains the major causes of water contamination:

Major Causes of Water Contamination

Agricultural Activities

Excessive use of fertilisers and pesticides seeps into rivers and groundwater, polluting water sources and affecting drinking water quality.

Industrial Waste

Discharge of heavy metals, toxic chemicals, and thermal pollutants from industries can create “dead zones” in water bodies where aquatic life cannot survive.

Oil Spills

Accidental spills during oil drilling or transportation contaminate oceans, rivers, and coastal waters, causing long-term ecological damage.

Plastic and Solid Waste

Non-biodegradable plastics break down into microplastics that pollute rivers and oceans, entering the food chain and harming both animals and humans.

Urban Runoff

Stormwater runoff carries oil, chemicals, and waste from roads and streets into nearby water bodies, increasing pollution levels.

Mining Activities

Acid drainage and the release of minerals and heavy metals from mining sites contaminate soil and water sources.

Improper Disposal of Hazardous Waste

Toxic materials dumped in landfills can leach into the ground and contaminate groundwater reserves.

Natural Sources

Certain natural processes such as rock and soil leaching can release elements like arsenic and radon into water. Volcanic eruptions can also deposit harmful debris into nearby water bodies.

Health Impact of Polluted Water

Contaminated water can cause serious health problems, including infections caused by bacteria, parasites, and viruses. Long-term exposure may lead to arsenic and lead poisoning, affecting the digestive system, liver, nervous system, and kidneys. In severe cases, prolonged exposure can increase the risk of chronic illnesses, including cancer. Many infections spread through faecal contamination, making polluted water a major public health concern.

Water contamination must be taken seriously. If left unchecked, it poses a significant threat to public health and the environment, and could lead to severe consequences in the coming years.