Water Distribution Planning in Urban Area FOR CIVIL ENG.......................

1. POWERPOINT PRESENTATION
ON
Water Distribution Planning in Urban
Area
BY-
PIYUSH KUMAR

2. URBAN WATER SUPPLY
Water is a precious natural resource and one of
the most essential requirements of all living being.
Regions with the highest growth rate are not
having access to water both in terms of quantity and
quality.
Indian cities receive intermittent water supply.
Need is to understand – Quantity is not sufficient
an quality is deteriorating.

3. PIPED WATER SUPPLIED IN CITIES
Major source of supply.
Intermittent and erratic.
Pressure is not acceptable.
In equalities in service provision between the rich
and poor.
High rate of water losses from the distribution
system.

4. ISSUES AND CHALLENGES
Population growth and Urbanization.
Growing urban water demand.
Infrastructure is aging and deteriorating.
Increased pollution from municipal and industrial
discharge.
Over exploitation of water resource.

5. WATER SUPPLIES IN INDIAN CITIES
S.NO NAME OF CITY LPCD
1. BANGLORE 138
2. CHENNAI 136
3. DELHI 154
4. HYDERABAD 181
5 KOLKATA 83
6. MUMBAI 263
SOURCE: CENTRAL POLLUTION CONTROL
BOARD

6. IMPACT OF WATER ON LIVING CONDITION
Inadequacy in the quantity and quality of drinking water –
Unsafe.
Inadequate infrastructure in the disposal of waste water –
poor sanitation.
Unsafe water to poor sanitation leading to poor hygiene
and water-related disease.

7. CAPACITY OF PIPED WATER SUPPLY IN BANGLORE CITY
Established Actual
Source During Potential Supply
(Year) (MLD) (MLD)
1. Aarkavati River
1896 36 -
a) Hesaragatta
1933 148 60
b) T.G. Halli
2. Cauvery River
1974 135 135
a) Stage - 1
1983 135 135
b) Stage - 2
1993 270 270
c) Stage - 3
2002 270 270
d) Stage - 4 - Phase-1
2011* 500* 500*
e) Stage – 4 – Phase-2*
1494 1370
TOTAL
*The Cauvery Water supply stage – 4 –Phase – 2 is under implementation and will be
completed in 2011.
** The Quantity from TG Halli (60 MLD) might be very less in that day.

8. SUPPLY AND DEMAND GAP
The supply cannot meet the demand.
 The unaccounted for water is about 35-40%.
 To meet the deficit other source of water and tapped.
 BWSSB is also supplying water through its 6750 bore
wells and 22 water tankers.

9. GROUNDWATER SCENARIO IN BANGLORE CITY
Groundwater plays an important role in the total water
supply of the city. 40% of the population of Bangalore is
dependent on ground water.
Number of the bore wells in the city is ranging from
200,000 to 400,000.
Over exploitation and poor management have contributed
to groundwater depletion and quality problem.

10. PRESENT SCENARIO OF WATER SUPPLY
BWSSB has divided Bangalore in to six zone.
 Calculation of water consumption
PIPED WATER SUPPLY – Population and per capita
consumption in each zone.
GROUNDWATER – Assuming 50% of the bore wells
are dry, and the remaining bore wells yielding about
1.5lit/sec, with a pumping of 2 hour duration per day

13. WATER DISTRIBUTION SYSTEM

14. Some best management practices for enhancing
distribution system reliability through maintenance
include:
1.Regular storage tank inspections and maintenance.
2.Implementing a cleaning/ lining program.
3.Developing an infrastructure replacement program.
4.Instituting a valve and hydrant exercise program.
5.Maintaining a leak detection program.
6.Implementing a meter repairs/ replacement program.

16. CONTROLS OF WATER SUPPLY SYSTEM
To reach the target / set point (reservoir flows / levels).
To reach the targets as fast as possible.
To ensure the smoothest possible operation of
valves/pumps.
To control the slow transients.
For real time operation monitored by SCADA.
Particularly useful for complex pipe networks.

17. CLEAN WATER FOR HEALTHY LIVING
CONDITION
To provide secured and safe water
SECURED – Adequate amount of water.
SAFE – Suitable quality is maintained of water.
 To improve environmental sanitation
Increase sanitation coverage.
To increase hygiene and health care
Improve quality of water supply sources and storage
facilities.

18. MANAGEMENT OF TREATED WATER DURING
DISTRIBUTION AND STORAGE
Regulation for maintaining water quality standards in
distribution systems.
Maintain minimum residence time.
Regular monitoring at storage and other junctions.
Flushing and maintenance of storage facilities.

19. DISTRIBUTION NETWORK

20. THANK
YOU