look at the flow chart and write a paragraph describing how drinking water is supplied from river water to the city of kolkata.
Answers
Answer:
Water Supply system in Kolkata city and adjoining areas
In the present topic, it is highlighted the basic information of the city water supply system . Other related issues, also have been discussed briefly to understand the system in a greater perspective.
Introduction:
We all know that the population of Kolkata city was 0.61 only before independence. But, the figure now phonemically is increased. It is reported that the current population of Kolkata is more than 4.6 million. The resident population was 45, 80,544 i.e 4.58 million in KMC area as per 2011 census
Its Metropolitan Area , the population is estimated to be i.e. 14.38 million in 2014.
The huge infrastructural development works in different locations, stretched at either side of EM by pass along with added areas of Kolkata like Jadavpur, Garia , Behala apart from city proper and northern congruent parts , have been undertaken by both private and public sectors , are major issues for such influx of population .
Therefore, the pressure of using of domestic water has been raised abnormally high .This has resulted the huge demand for the supply of potable water, particularly in this growing areas.
Two planned townships in the greater Kolkata region are Bidhannagar, also known as Salt Lake City, located north-east of the city and Rajarhat, also called New Town, sited east of Bidhannagar Salt Lake Sector , are also witnessed with the same problem
Source of Water:>
The western part of city follows along the right bank of river Hooghli. The river has perennial flow.
As a result, the city remains at comparatively advantageous position than many other cities in India.
The water resources of the river Hooghly is very much precious to us. All the surface water treatment plants at the present moment are located along the right bank of the river.
Surface water and ground water >
There are 4 types of situation: i) Entire water supply from surface water ii) Entire water supply from ground water iii) Mixed supply, a combination of both, iv) and last but not least, the rain water harvesting
Kolkata City water supply is dependent on both surface water source from the river Hugli and ground water sources.
Surface Water Sources:
A brief Overview >
Hooghly River is the main source of potable surface water for the city of Kolkata supplied from the age-old Palta Water Works now rechristened as Indira Gandhi Water Treatment Plant. The Palta Water Works, spreading over a sprawling stretch of 480 acres, was the first intake point constructed during 1864–1870 for generation and supply of water. Initiated with a capacity of 6 mgd (million gallon per day), filtered water was generated through sedimentation in pre and final settling tanks
Keeping in tune with the growing rate of population and proportionally accelerating rate of demand and keeping in mind the fact, several measures have been taken for enhancement of the capacity and up gradation programmes , apprehending to exceed the demand year wise.
New Palta Water Wokrs at Indira Gandhi Water Treatment Plant is a notable step in this development process. During 2006 the capacity of IGWTP palta was finally enhanced to 260 million gallons every day
Garden Reach Water Works also plays an important role and having a capacity to produce 120 M.G.D of potable surface water.
Besides, there are two more water treatment plants are in action:
i) Jora bagan water treatment plant : 8MGD,
ii) Watgunge Water Treatment plant : 5MGD
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