For the second time in two years, Vienna officials have raised water and sewer rates in an effort to keep pace with increasing treatment costs.

The Town Council last week unanimously voted to approve the town manager's recommendation that most water rates be increased by 17 cents and sewer fees by 32 cents.

For 6,000 in-town users, the new rate will be 85 cents per 1,000 gallons of water; for about 2,000 users outside Vienna the new rate will be $1.13 per 1,000 gallons.

A major reason for the rate increase, officials said, is that Falls Church, from which the town buys its water, increased its charges. Town officials say they want the water system, which has been in the red in recent years, to pay for itself.

Sewer fees, which are the same for those inside and out of the town limits, went from $1.62 to $1.90 per 1,000 gallons of effluent.

Vienna sends its sewage to Lake Accotink in Fairfax County and to the Blue Plains treatment plant in Washington. Officials expect to take in some $800,000 and $900,000, respectively, from the higher water and sewer rates.