You can have a garbage disposal in Manhattan New York or any other part of New York.
However if you have older plumbing the garbage disposal can potentially lead to clogs in your sewer system and sewer main if you're not careful.
The reason why there are no garbage disposals in New York or at least in older buildings is due to the potential for clogs and the maintenance problems that can go along with the garbage disposals.
However there are some garbage disposals in some buildings, apartments and homes in New York although they are not commonly found in older buildings, older apartments and older homes.
Garbage disposals are allowed in New York and in New York City but they are only mainly found in newer buildings and new homes and newer apartments.
The reason why NYC apartments do not have garbage disposals is mainly because they have the potential to lead to clogs or damage to plumbing systems, especially in older plumbing systems.
Installation costs and concerns about maintenance for the garbage disposals also factor into why NYC apartments don't have garbage disposals.
However garbage disposals are legally allowed in NYC apartments and buildings but they are not commonly found in older buildings, in which plumbing may not be designed to properly handle the extra load of the food being disposed of in the garbage disposal or where building management is wary of any potential issues that may arise from the use of garbage disposals.
Also the older pipes that serve many of New York City's vertical villages also tend to have so much sludge and scaling in their waste lines which also make it bad to use garbage disposals.
Often it's mainly the older buildings and apartments in NYC that don't have garbage disposals due to the older plumbing and concerns about the garbage disposals.
older plumbing cannot often handle the food waste as good as newer plumbing can.
Newer buildings in NYC and especially the buildings built after 1997 often have garbage disposals in them.