If your landlord after two (2) weeks has yet to fix the issue with the water heater after being given notice of the problem, I would call the landlord about the need to fix the problem and follow up with a written letter or e mail memorializing the conversation requesting a fix by a certain date.If the landlord does not fix the water heater by the requested date, I would call your local health and safety department to request an inspection of the water heater to make sure it is safe. If it is not, the landlord will receive a citation forcing him or her to get the item repaired.