Outlets aren't grounded, does the landlord or tenant need to pay?

[Kevin McKittrick]

We are moving to a rental property in Seattle next month and the lease is already signed. After signing we mentioned using a portable dishwasher and the PM said it wouldn't work because the outlets aren't grounded.  It is an old house, so we went back through our pictures and videos during the tour and found that the outlet covers are 3 prongs, but not actually grounded. We are worried about a potential fire or getting shocked. We requested the change and they said we would need to pay for the update. After coming back with a solution of taking it off our rent if we paid for it, they said they would pay half. After some research it seems that this property isn't up to code and presents some valid safety concerns. I am wondering if any experienced landlords or property managers in Seattle have ever come across this issue before? We want to be respectful of the landlord and the property management, so any advice on how to handle this would be great. We ultimately feel like this shouldn't be our financial burden.