Software spotted the pools on aerial images of nine French regions during a trial in October 2021. They have amassed some €10m ($9.9; £8.5m) in revenue, French media is reporting. The software was developed by Google and French consulting firm Capgemini. The tax authorities say the software could eventually be used to find undeclared home extensions, patios or gazebos, which also play a part in property taxes. An average pool of 30 sq m (322 sq ft) is taxed at €200 ($200; £170) a year. The crackdown comes as France tackles with its worst recorded drought that has left more than 100 municipalities short of drinking water. In July, France had just 9.7mm (0.38 inches) of rain . . .