Water Pollution : Water Pollution Presented By Slide 2: On April 22nd We celebrate Earth Day Slide 3: 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 Slide 4: 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 Slide 5: 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
Toxicity (micro-pollutants and other industrial pollutants) Surface Water
Ecological health Ground Water
Sea water intrusion Water Pollution : Water Pollution Water Pollution : Water Pollution Water PollutionTwo major classifications : Water PollutionTwo major classifications Point Source Non-point Source Slide 10: Point Sources
Single large source
Can localize it to one spot
- 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... Slide 12: Point source
examples Slide 13: Non-point Sources
Diffuse source or many smaller point sources
Fertilizer on fields Slide 14: Non point source
examples Slide 15: Non-point source pollutants - nutrients Slide 16: 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
Common effluent treatment plants for cluster of SSI units (124)
Promotion of low-waste and no-waste technology Slide 20: 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.