Is looking for alternate housing an option for you? The only reason I ask is we had a similar situation occur here. The owners did not fix the problem and the board of health shut the apartments. The residents had to leave in less than 24 hours. They had the option of suing the owner to pay for them to move but that takes time. The state and other agencies offered some help but most were left in dire straits.

I know we are in different states and things might work different there. I hope it resolves in your favor and you get your water pressure back.