This is something you should put top of your list for total peace of mind. Without this very affordable service you could end up with a heart stopping water bill of thousands of Euros. Water leaks often go un-noticed for months, that is until you get the bill!! . If its on your property forget about claiming from the water company. The miagua system really works… I only received one alert in the year…which was when I was refilling the pool after a regrout. Whether you are a permanent resident or not .. you should seriously consider this.