Water is set to get expensive in Delhi. After the first 20,000 litres are supplied free of cost, there will be a 20 per cent increase in rates, it was decided today at a meeting of the Delhi Jal Board headed by Chief Minister Arvind Kejriwal. This means that for the third straight year, there is no hike in tariff for those who use up to 20,000 litres of water per month.