The phrase "are now maintained" is correct and usable in written English.
It can be used to indicate that something is currently being kept in a certain state or condition, often referring to systems, processes, or items that require upkeep.
Example: "The records are now maintained electronically to ensure better accessibility and security."
Alternatives: "are currently upheld" or "are presently managed".
These are now maintained as historic monuments.
People are now maintained at home on medications and with various types of health care rather than being put someplace else, OK?
Notably, both cities mothballed their operations soon after they began, having managed to line up less-expensive alternatives; the plants are now maintained to provide emergency alternatives.
The Autonomy software will make it possible to build automatically updated indexes of disparate databases that are now maintained separately by different government agencies.
Under a new law passed after the 1995 killing of 6-year-old Elisa Izquierdo, case files are now maintained even if charges are dropped.
Its main drifts and galleries are now maintained as a source of mineral water for drinking and are also used for scientific research.
According to Dr. Hall's calculations, an extra 220 calories a day are now maintaining the new higher weight.
Asked whether he believed Mr. McCain was a candidate of the left, as Mr. Bush's local campaign officials are now maintaining, one man said that was nonsense.
Mr. Rumsfeld said the 18,400 troops in Bosnia -- 3,100 of them American -- have successfully overcome any military challenge and are now maintaining law and order.
Hastings avers that "to withdraw from the church would be to desert his [Briggs'] friends, to desert the minority and to give up the whole history of the Presbyterian Church to the despotism which traditionalism and bigotry are now maintaining".
This system encouraged the growth of hundreds of wineries owned and operated by families that are now maintaining the sustainability of farmland in the Finger Lakes and on Long Island's East End.
