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Water Pollution : 

Water Pollution Presented By

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On April 22nd We celebrate Earth Day

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It isn’t the pollution that’s harming the environment. It’s the impurities in our water that are doing it. Nilesh Chobe Our Society needs a better understanding of how we get clean water for all human needs

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Only a small fraction (about 3%) is fresh water India is wettest country in the world, but rainfall is highly uneven with time and space (with extremely low in Rajasthan and high in North-East) On an avergae there are only 40 rainy days Out of 4000 BCM rainfall received, about 600 BCM is put to use so far Water resources are over-exploited resulting in major WQ problems Water is precious & Scarce resource

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Humans depend on very small reservoirs of water for all our needs These reservoirs cycle/ turnover very quickly As they cycle they can either collect pollution from other sources, or be cleaned by passing through functioning ecosystems Water Pollution

Major Water Quality Issues : 

Major Water Quality Issues Common issues of Surface and Ground water Pathogenic (Bacteriological) Pollution Salinity Toxicity (micro-pollutants and other industrial pollutants) Surface Water Eutrophication Oxygen depletion Ecological health Ground Water Fluoride Nitrate Arsenic Iron Sea water intrusion

Water Pollution : 

Water Pollution

Water Pollution : 

Water Pollution

Water PollutionTwo major classifications : 

Water PollutionTwo major classifications Point Source Non-point Source

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Point Sources Single large source Can localize it to one spot Industrial Plants - Sewage pipes

Point Source - Example : 

Point Source - Example LUST - Leaky Underground Storage Tanks 22% of the 1.2 million UST are LUSTy Look at water pollution from gasoline...

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Point source examples

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Non-point Sources Diffuse source or many smaller point sources Automobiles Fertilizer on fields

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Non point source examples

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Non-point source pollutants - nutrients

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Manage Your Household’s Water Pollution - Although individual homes may contribute only minor amounts of water pollution, the combined effect of an entire neighborhood can be serious. What can you do???

Water (Prevention and Control of Pollution) Act, 1974 : 

Water (Prevention and Control of Pollution) Act, 1974 Preamble: Maintaining and restoring of wholesomeness of water – level of WQ Provision for consent Every polluter (industry or municipality) has to obtain consent from SPCBs/PCCs Consent is conditional Standards prescribed for effluents Monitoring the compliance

Identification of Polluted Water Bodies : 

Identification of Polluted Water Bodies CPCB identified 10 polluted stretches for prioritising pollution control efforts in 1988-89. The Number of Stretches increased to 37 during 1992-93. The list is now revised to include 86 stretches. The concerned State Pollution Control Boards were asked to take adequate measures to restore the desired level.

WATER POLLUTION CONTROL STRATEGY : 

WATER POLLUTION CONTROL STRATEGY Urban sources – National River Action Plan Industrial Sources – through consent ( SPCB) Special Drives: 17 categories of industries Industries discharging into rivers and lakes 24 Problem areas action plan Environmental auditing Common effluent treatment plants for cluster of SSI units (124) Promotion of low-waste and no-waste technology

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CONCLUSION In order to meet water quality criteria in rivers, dilution water is required besides stringent pollution control. Interlinking of rivers is one of the solution to meet water quality criteria in rivers as more dilution of water would be available in rivers.