House problems seller failed to disclose

[Brandon Shaw]

I recently bought a fourplex in the portsmouth virginia area and had it inspected with only minor problems.  Since I've owned it for the last month there have been many problems popping up.  The water discharge backed up but one side did not have a relief access to drain it and when putting it in discovered that there was a crack in the pipe.  There was also a pipe leaking in the crawlspace which was noted on the inspection report which was to be fixed that leaked sewage and caused a smell in the unit above it.  Another problem came up from the smell of leaking gas when the handyman came out he found that the gas water heater had been improperly vented and gas was backing up into the unit as well as pvc piping used for the hot line which he said was against code.  I'd like to know if I can go after the seller for failing to disclose these serious problems.  I was also told by one of the tenants that while we were inspecting that she was told not to talk about any of the problems with the place by the seller.  I'm sure the seller was aware of these problems and did not mention any of them during the walk through or inspection.  any advice would be appreciated if anyone is in the portsmouth norfolk virginia beach or hampton roads area.