natural sound of dish clanking larissa christ is adjusting to life in her first apartment. larissa christ, west des moines resident: "the more that i can put into savings the better. most of the time, i kind of spend it shopping, or online shopping, but i try to save where i can." many landlords have their tenants pay water or electric bills, in addition to their monthly rent. now, after des moines water works passed a 10 percent rate increase, many families will have to adjust to that cost trickling down to them. board members say it's because people are using less water than before. keith denner, president of professional property management: "it happens fairly frequently because their cost of operation goes up and the cost of electricity goes up and they need to pass on their costs. we understand." at sun prairie apartments, management includes that cost in the monthly rent. because of several efficiency upgrades, the annual water bill for each apartment can be about $10 a month. so, a dollar increase won't be a big hurt to management or the tenants. natural sound of wat