For the past 8 years I have used a pressure pump to take water from a 2100 litre tank, the tank is/was topped up from the town's water supply, and I have taken the water supply for granted. A good water supply every day for the house and garden. Last month we moved into a new house and I disconnected the water tank to take to the new property. I thought I would do the same as everyone else around the old house and leave the pump connected to the town's water supply until we moved. What a difference. The pump soon pumped the PVC pipes dry and the water supply was, at best intermittent and, at worse, non-existent. I do not know how so many people can be happy to plug a pump into the town's (or village) water supply without a holding tank. Depending on where you live, and villages are possibly worse than the town's supply, I guess you get good water over a 24 hour period but not every hour of the 24 hours. The worst time I have found is from 0600 to 1200 when the water pressure is very low. Not very good when people come home from work either.
CS - from my experience you will need a tank to ensure a good water supply to the house (and garden).