ZACHARY — The City Council approved hikes Tuesday night in municipal water, sewer and natural gas rates that will increase incrementally during the next three years.

By 2014, residents would pay an average of $7 more per month for sewer service, officials said.

Gas and water rates are scheduled to increase an average of $6 and $9 per month, respectively.

The rate increases, approved unanimously by council members, were described as the first boost in utility rates for Zachary residents in at least 11 years.

The increased revenue will be applied to daily operation and maintenance of the systems and also to retire a proposed utility bond issue, officials said.

The council agreed July 12 to go forward with a plan to sell $9.3 million in bonds to fund upgrades to the city’s sewer system.

The proposed bond sale must be approved by the state Bond Commission at its Aug. 10 meeting before the measure can appear on the Oct. 22 primary election ballot.

Other items on the agenda included:

HOUSE BUY: After hearing from the mayor, the council agreed to make offers on two houses near Zachary High School.

The properties would be paved and used as parking lots for the school. The council approved a tentative offer of $220,000 for the house and land at 4412 Lee St. and $190,000 for the 4424 Lee St. property.

REDFLEX: The council agreed to postpone a discussion of options for ending the city’s contract with Redflex Traffic Systems.

The city has 3? years remaining in its contract with the company, which runs Zachary’s radar-based photo traffic enforcement program.

SPECIAL COUNSEL: The council approved the contract to hire L.T. Dupre III of the law firm Perkins and Dupre to represent the city in the case of Priscilla Bershears v. Zachary Chamber of Commerce.

MOBILE HOMES: The council considered a waiver for Andrew Benton to put a mobile home on his lot at 6675 Ronny St.

“Uniform Development Code allows you to replace a trailer, but it has to be your trailer, for yourself and yourself alone,” the mayor said.

Benton said there was a mobile home on the property six months ago.

“I can’t believe you would set aside a whole municipality with no mobile homes,” he said.