Durham, New Hampshire exists around the University of New Hampshire, and its rental market reflects that almost entirely: houses and small apartment buildings owned by individual landlords, leased to students who arrive in August and are gone by May. Nearly all of it runs through one water meter per building. That arrangement makes the owner responsible for every gallon while giving tenants no reason to think about a single one. Water submetering separates the usage by unit. True Submeter installs an individual water meter on each one and invoices tenants automatically for exactly what they used, so the water bill returns to the owner instead of coming out of the margin. Consumption drops once tenants can see what they are running, disputes over a split bill go quiet, and net operating income improves. When the entire tenant base changes every spring, the meter is what keeps the water bill from changing with it.
