Answer: Using the garden hose only once a week
From the pie chart, we are given the percentage of the water usage
Washing machine = 21%
leaks = 13%
Toilet = 28%
Faucet = 12%
Shower = 21%
Other = 5%
Water bill can be lower when some of these things are put in place
1. Fixing any leaks will definitely reduce water wastage and also prevent water from finishing on time
2. Taking shorter showers will also reduce water bills
3. Turning off the faucet while brushing our teeth would also reduce the water bill