Within the water usage tile in the Alert Labs Dashboard, you'll notice a section about "occupancy."
What does it mean? 
We use the national average of daily water use (250 L /person) to illustrate how much water your property is using. It's not supposed to be the actual number of people living in your house.
The example to the right is showing a 3 person occupancy. This means that the property is using enough water to support 3 people, according to national statistics. If the house actually has 3 or more people, this is good news: they're less than or equal to their expected amount of water. However, if the property has less than 3 people, they're using more than the average person.
Different 'occupancy' numbers
There are two occupancy numbers listed on your Dashboard. The one listed underneath the "water usage timeline" is based on the past 30 days of water use at your property. Farther down the page, you'll see another occupancy listed. This one is only based on the past 7 days of water use.
It's not unusual for these number to differ: you may have a light week where you're away from home, or a heavy week when the weather is nice and the kids have water fights.