4.2. Detroration of Water Quality

Water quality refers to purity of water, or water without unwanted foreign substances.

Water quality determines how clean and safe water is for human use and ecological balance. Pure water is essential for drinking, agriculture, and maintaining aquatic ecosystems. Contaminants can include harmful microorganisms, chemicals from industrial processes, and other wastes.

Consider water quality like the cleanliness of a kitchen. If the kitchen is dirty and contaminated with bacteria or chemicals, it can make food dangerous to eat. Similarly, if water is contaminated, it becomes unsafe to drink or use.

Water gets polluted by foreign matters, such as micro-organisms, chemicals, industrial and other wastes.

Pollution can come from various sources, including agricultural runoff filled with fertilizers, industrial discharges containing toxic substances, and untreated sewage. When these contaminants enter rivers, lakes, and oceans, they harm aquatic life and pose risks to human health.

Imagine pouring leftover cooking oil down a drain. It clogs pipes and pollutes waterways, making it unsafe for fish and plants. Just as we shouldn’t pour waste indiscriminately, we must monitor what enters our water systems.

This results in pollution of water, whereby quality of water deteriorates affecting aquatic systems.

When pollutants enter water bodies, they can lead to toxic environments that are harmful to fish and plant life. Some chemicals can cause algae blooms, which deplete oxygen levels in the water, killing fish and other aquatic organisms.

Think of a swimming pool where someone pours in too much pool cleaner. The water becomes unfit for swimming, harming those who enter. Water bodies face a similar fate when pollution rises uncontrollably.

Sometimes, these pollutants also seep down and pollute groundwater.

Groundwater is a critical resource for drinking and irrigation. When surface pollutants infiltrate the ground, they can degrade the quality of groundwater supplies, leading to health issues for communities relying on wells and boreholes.

Imagine a sponge sitting on a countertop that gradually absorbs spilled juice. Over time, it becomes contaminated and unsafe to use. Similarly, groundwater can become contaminated if pollutants seep into the soil.

The major rivers of the country severely polluted rivers are: the Sabarmati at Ahmedabad, the Gomti at Lucknow, the Kali, the Adyar, the Cooum, the Vaigai at Madurai and the Musi of Hyderabad.

Various rivers in India exhibit severe pollution levels, which affect not just aquatic life but also the health of millions of people who depend on them for their water supply. High levels of pollutants lead to several health issues, including waterborne diseases.

Just as a polluted river can harm fish and plants, it can also harm people who use that water. If an area is known to have a polluted river, it’s like a restaurant known for unsanitary conditions; people would avoid it for their health.

--