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Two Types
- Direct
- Indirect
Direct Cold Water System
Advantages
- Less pipework, so cheaper.
- Fresh water supply at each appliance.
Disadvantages
- No reserve water supply of cold water if water is cut off.
- Valves and taps wear out quicker because of the excessive pressure from the mains.
Indirect Cold Water System
- All appliances except the kitchen sink are supplied by water from the tank.
- Kitchen sink is connected to the mains.
Advantages
- There is a reserve of cold water if mains is turned off.
- Less pressure on taps and valves.
Disadvantages
- Water supply to appliances except the kitchen sink may not be clean.
- More expensive as there is more pipework.
