The document discusses water distribution systems. It defines a distribution system as transporting drinking water from treatment plants or wells to consumer taps while preserving water quality and quantity. There are four main types of distribution system networks: dead end, radial, grid iron, and ring. Water can be distributed via gravity systems, pumping systems, or a combined system. The most common is a combined system that pumps water to an elevated reservoir, then uses gravity to supply consumers. Distribution reservoirs store treated water for emergencies and absorbing hourly demand fluctuations to maintain constant water pressure.

1. Water distribution system

2. WHAT IS DITRIBUTION SYSTEM?
• A water distribution
systems is one in which the
drinking water is
transported from the
treatment plant or well
supplies to the service
connection or consumers’
taps. These systems aim to
preserve the quality and
quantity of water, as well as

3. CLASSIFICATION Of DISTRIBUTION
SYSTEM NETWORKS
• Dead End System
• Radial System
• Grid Iron System
• Ring System

4. METHODS OF WATER
DISTRIBUTION
• Gravity System
• Pumping System
• Combined gravity and pumpingsystem

5. GRAVITY SYSTEM
• Suitable when source of
supply is at sufficient height.
• Most reliable and economical
distribution system.
• The water head available at
the consumer is just minimu
required.
• The remaining head is
consumed in the frictional

6. PUMPING SYSTEM
• Treated water is directly into
th distribution main out
storing.
•Also called pumping without
storage system.
•High lifts pumps are required.
•If power supply fails,
complete stoppage of water
supply.
•The method is not general

7. COMBINED GRAVITY and PUMPING
SYSTEM
• Most common system
• Treated water is pumped
stored in an
elevated"distribution reservoir
and Then supplies to consumer
byaction of gravity.
• The excess water during low
demand periods get
• stored in reservoir and

8. DISTRIBUTION RESERVOIRS
Distribution reservoirs,
also called service
reservoirs, are the storage
reservoirs, which store the
treated water for supplying
water during emergencies
(such as during fires;
repairs, etc.) and also to
help in absorbing the
hourly fluctuations in the
FUNCTION
•To absorb the hourly
variations in demand. To
maintain constant
pressure in
thedistribution main.
•Water stored can be
supplied
duringemergencies.

9. TYPES OF RESERVOIRS
Depending upon the elevation with
respect to ground
• Surface reservoirs
• Elevated reservoirs

10. SURFACE RESERVOIRS
• These also called ground
reservoir.
• These Reservoirs are
constructed high
• natural grounds and are
usually made of stones,
brick, plain or reinforced
concrete cement.

11. ELEVATED RESERVOIR
•It is also referred to as
overhead tanks and are
required at distribution areas
which are not governed and
controlled by the gravity
system of distribution.
•They are constructed where
combine gravity and pumping
system of water distribution is
adopted.

12. DISTRIBUTION SYSTEM IN A
GLANCE