Remote water metering

[Scott Brandt]

I have recently received several high water bills because the tenants have not indicated that they had a water leak.  Does anyone know of a low-cost remote monitoring system that I could place on my apartment building and adjacent building that would send me alerts during high water usage.   I have seen a few such as EKM water hero.  Any other good systems? My buildings have 5 units each with a separate water supply for each building