5.3. WATER POLLUTION

♤ ‘Addition of certain substances to the water such as organic, inorganic, biological, radiological, heat, which degrades the quality of water so that it becomes unfit for use’. Water pollution is not only confined to surface water, but it has also spread to ground water, sea and ocean.

5.3.1. Sources Types of sources

1. Point Sources

♤ It is directly attributable to one influence. Here pollutant travels directly from source to water. Point sources are easy to regulate.

2. Diffuse or non-point source.3) Agricultural sources:4) Thermal Pollution:5) Underground water pollution:6) Marine pollution:5.3.2. Effects of Water Pollution DO , BOD, COD 2. Effects on human health:3. Hazards of ground water pollution:5.3.3. Control Measures