Water Pollution

Short Version — 110–140 Words

For Class 4

Water pollution means making water dirty and unsafe for people, animals, and plants. It is a serious problem in Bangladesh. Rivers, canals, ponds, and other water sources become polluted when people throw rubbish, plastic, sewage, and harmful waste into them. Factories may also release dirty water and chemicals into rivers. Farmers sometimes use too much fertiliser and pesticide, which can reach nearby water. Polluted water can cause diseases and kill fish and other water animals. It can also create bad smells and make water unfit for drinking or washing. We should never throw waste into rivers, ponds, or canals. Factories should treat their waste, and people should keep water sources clean. Therefore, preventing water pollution is necessary for good health and a clean environment.

Standard Version — 170–200 Words

CEFR A1

Water pollution means making rivers, ponds, canals, lakes, or other water sources dirty and harmful. Clean water is necessary for drinking, cooking, farming, washing, and many other activities, so water pollution is a serious problem. There are several causes of water pollution. People often throw plastic, rubbish, food waste, and sewage into rivers and canals. Factories may release chemicals and dirty water without proper treatment. Rain can also carry fertilisers and pesticides from fields into nearby water. As a result, the water may become unsafe for people and animals. Drinking polluted water can cause serious diseases. Fish and other water animals may die because harmful substances reduce the quality of the water. Polluted rivers and ponds can also smell bad and become unsuitable for bathing, fishing, or household use. We can reduce water pollution by stopping the dumping of waste into water sources. Factories should treat waste before releasing it, and farmers should use chemicals carefully. People should also keep drains, ponds, canals, and rivers clean. Therefore, protecting water from pollution is essential for health, agriculture, wildlife, and the environment.

Advanced Version — 250–300 Words

CEFR A2–B1

Water pollution is the contamination of rivers, lakes, ponds, canals, groundwater, or other water sources by harmful substances, and it is a serious threat to human health and the environment. Clean water is needed for drinking, cooking, farming, fishing, washing, industry, and many other daily activities. However, water becomes polluted in several ways. People may throw household rubbish, plastic, sewage, and other waste into rivers and canals. Factories can release chemicals, oils, dyes, and dirty wastewater if their waste is not properly treated. In farming areas, rainwater may carry fertilisers and pesticides from fields into nearby ponds, canals, or rivers. Oil from boats and waste from markets or settlements can also damage water quality. Polluted water can spread diseases when people drink or use it without proper treatment. It can also harm fish, plants, insects, and other organisms that depend on clean water. When oxygen levels in polluted water fall, fish may die and the natural balance of the water ecosystem may be damaged. Polluted rivers and ponds may also smell bad and become unsuitable for bathing, irrigation, fishing, or recreation. Preventing water pollution requires action from individuals, industries, farmers, and government authorities. People should not throw waste into water bodies, sewage should be treated properly, and factories should clean wastewater before releasing it. Farmers should use fertilisers and pesticides carefully, and plastic waste should be collected and managed responsibly. Regular monitoring and public awareness are also important. Therefore, clean water should be protected as a valuable resource because healthy people, agriculture, wildlife, and future generations all depend on it.

Writing Outline — Write Your Own

Topic Sentence

Water pollution means making water dirty, harmful, and unsafe for use.

Main Ideas

importance of clean water

rubbish and plastic

sewage

factory waste

chemicals

fertilisers and pesticides

diseases

death of fish

bad smell

unsafe drinking water

proper waste disposal

factory treatment

careful farming

public awareness

Vocabulary Bank

water pollution — making water dirty or harmful

sewage — dirty water and waste from homes

chemical — a substance used in factories or farming

pesticide — a chemical used to kill harmful insects

fertiliser — material used to help crops grow

wastewater — used or dirty water

contaminate — make something dirty or unsafe

disease — illness

ecosystem — living things and their natural environment

irrigation — supplying water to crops

treat — clean or process something

resource — something valuable that people need or use

Useful Phrases

Water pollution means...

Clean water is necessary for...

One major cause is...

People often throw...

Factories may release...

As a result,...

Polluted water can...

It also harms...

This problem can be reduced by...

Therefore,...

Write Your Own Paragraph

Step 1: Define water pollution.

Step 2: Explain why clean water is important.

Step 3: Describe two or three causes.

Step 4: Explain effects on people and animals.

Step 5: Give practical ways to prevent pollution.

Step 6: Keep all sentences focused on polluted water.

Step 7: End with the need to protect clean water.

Remember

One Paragraph = One Main Idea

Topic Sentence → Explain → Support → Example → Develop → Conclude