The city of Napa is set to consider an increase to water rates for the first time in two years to cover the increasing costs of providing service. The Napa City Council will hold a hearing Nov. 7 to adopt the new rates. If approved, they would be effective Jan. 1 and customers likely would see the impact on bills in March and April, said Joy Eldredge, deputy city utilities director. The recommended increase will typically add up to about $5 each month in the winter and $10 each month in the summer for average users — between 4,000 and 8,000 gallons — each year until 2028 for residential users within the city.