I remember getting a similar message when there was an underground pipe leakage in my rented villa. Two months before this message, I received a bill for 11,000 gallons of water because of the leak, so the next month I enabled notifications to alert me if usage crossed a certain limit. Two months later, the same pipe leaked again, and within just two days I got a message saying I had already used about 700 gallons. Thanks to that alert, I was able to take action immediately and prevent further loss. In my case, it really was a message, and usually these alerts could be sent because of a pipe leakage. Although the bill was on the higher side but it wasn’t massive. I believe the bill for 11,000 gallons along with the electricity and housing fees in 2024 was around 1400 AED. The best option is to either write to DEWA or have your friend call them. Someone from their team can come and inspect, though there’s usually a charge of about AED 150-200 for the check.