Rising water and sewer treatment costs have prompted Vienna Town Manager Brackenridge Bentley to call for utility rate increases.

Bentley wants the Vienna Town Council to increase water rates for residents by 17 cents per 1,000 gallons to 85 cents and increase water rates for nonresidents by 22 cents to $1.13 per 1,000 gallons. He also recommends a 28-cent jump in sewer rates for all users, pushing the cost to $1.90 per 1,000 gallons.

In response to the recommendations, the council will hold a public hearing at 8 p.m. Monday in the Town Hall, 127 Center St. South.

If the increases are approved, water and sewer bills will increase by about $20 to $30 a year for the average Vienna family.

"The time has come for our water and sewer fund to become self-supporting," Bentley said. "In past years, we have subsidized the fund with general fund revenues and even revenue sharing money, and you're not supposed to do that."

Vienna provides water and sewer service to about 9,000 customers.

Water costs have risen by 30 percent and sewage treatment costs have gone up 20 percent this fiscal year, town officials said. The increases are "beyond Vienna's control," Bentley said, because the town buys 90 percent of its water from Falls Church and pays Fairfax County and the District to treat its sewage.

The Town Council delayed action on the proposed water and sewer rate increases until late summer so it "wouldn't have to hassle with it during the budget process," Bentley said.