Yes !
First : Start by writing NOT with capital letters, in Internet it is difficult to read the message and it is bad ETIQUETTE.
Second: the idea of using the city water pressure to produce power is "ATROCIOUS" and totally NON economical, you will spend a lot of monthly money to produce a bit of energy and at the same time you will be wasting a lot of processed water that all the citizens of your city would like to have for their normal use of clean potable water.
Expensive proposition for the benefit of one, hurting many.
A second "meter" shafted to a generator needs a constant water volume to produce some power, also it will reduce the pressure to a low value, making it too a low pressure after the "meter".
Nando