Bahria enclave islamabad - water supply!

While looking for rental property in bahria enclave islamabad, i was told by the property agent there that water is supplied through water tankers to existing households. It was kind of a shock to me as i thought the water pipelines etc were part of the housing scheme.

Is there anyone here who could shed some light on the quality of this housing scheme which is there for around 3/4 years and water is still supplied through water tanks!