I was sent out to discuss water quality but when I arrived I found the client had extremely low water pressure and volume. After speaking with client I learned there was water service work completed at the other end of the building which required the water to be shut off to the entire complex. After completion of the work is when client found sediment in the toilet tanks, discolored water coming from the fixtures, low pressure and volume. I cleared debris from the aerators and shower heads, replaced all the toilet fill valves but still had the same issue. I pulled and cleaned the PRV inline filter with the same results. I replaced the PRV but found the problem was worse than before. I tried several different things to get the water flowing but was unable to get it flowing normally. I attempted to find a meter box for the building to replace the gate valve water stop for the unit but learned that there is none and the entire complex would need to be shut down. TE does not turn w