Types of water pollution:

1. Chemical pollution: This type of pollution occurs when harmful chemicals are released into water bodies, either intentionally or accidentally. Common sources of chemical pollution include industrial discharges, agricultural runoff, and improper disposal of household chemicals.

2. Nutrient pollution: Nutrient pollution occurs when excessive amounts of nutrients, such as nitrogen and phosphorus, are introduced into water bodies. This can lead to algal blooms, which can deplete oxygen levels in the water and harm aquatic life.

3. Microbial pollution: Microbial pollution, also known as bacterial pollution, occurs when water is contaminated with harmful bacteria, viruses, and parasites. This can lead to waterborne diseases, such as cholera and dysentery, when contaminated water is consumed or used for recreational activities.

4. Sediment pollution: Sediment pollution occurs when soil and other particles are washed into water bodies, usually as a result of erosion. Excessive sedimentation can cloud the water, disrupt aquatic habitats, and smother aquatic plants and animals.

5. Thermal pollution: Thermal pollution occurs when water temperatures are significantly altered, usually as a result of industrial processes or the discharge of heated water from power plants. Changes in water temperature can disrupt aquatic ecosystems and harm sensitive species.

6. Plastic pollution: Plastic pollution occurs when plastic waste, such as bottles, bags, and microplastics, enters water bodies. This can harm marine life through ingestion and entanglement, and can also degrade water quality over time.

7. Radioactive pollution: Radioactive pollution occurs when water is contaminated with radioactive substances, usually as a result of nuclear accidents or the improper disposal of radioactive waste. This type of pollution can have serious health effects on both humans and aquatic life.

1. Industrial wastewater:
- Contains toxic chemicals, heavy metals, and other pollutants
- Generated by factories, mines, and power plants

2. Municipal wastewater:
- Comes from homes, businesses, and institutions
- Contains human waste, cleaning products, and other organic matter

3. Agricultural runoff:
- Contains fertilizers, pesticides, and bacteria
- Washes off of farm fields and into waterways

4. Stormwater runoff:
- Collects pollutants from paved surfaces, rooftops, and construction sites
- Carries these pollutants into waterways

5. Oil spills:
- Can release large amounts of oil into the environment
- Can cause significant harm to marine life and coastal ecosystems

6. Sewage:
- Untreated human waste that can contain harmful bacteria and pathogens
- Often contaminates water sources in developing countries

7. Acid rain:
- Contains high levels of sulfur and nitrogen oxides
- Damages forests, lakes, and streams

8. Thermal pollution:
- Occurs when heated water is discharged into natural waterways
- Can harm aquatic life by altering their metabolism and behavior

9. Sedimentation:
- Excess soil and other particles enter waterways
- Can clog gills of fish and harm aquatic plants

10. Nutrient pollution:
- Occurs when excessive amounts of nutrients, such as nitrogen and phosphorus, enter waterways
- Can lead to algal blooms and oxygen depletion