The landlord must prepare the unit for rent as he would if the tenant moved out. In some states, if a tenant dies in the unit of a homicide or suicide, or was found in advanced decomp, the Landlord must state this to the potential tenant if such death occurred within the past eighteen months before any tenants move in, or the tenant can break the lease and sue the landlord for omission of a material fact.
You tell the health department.
In any situation, if there are code violations, the tenant needs to notify the landlord, and give him an opportunity to correct. Some municipalities require that a landlord get a Certificate of Occupancy from them before renting - check with your local building or health inspector. But, that is an issue between the town and the landlord, not usually the tenant.
If the tenant's health issues are caused by the landlord's violation of health and building codes, then the tenant can sue the landlord. The landlord's insurance would normally get involved at this point, as opposed to being sued directly. If the tenant has special health needs that the landlord isn't meeting, then too bad, move. As long as the health and building codes are being complied with, tenants cannot force a landlord to take extraordinary measures.
If you do not have a specific written agreement that the landlord will pay, then you pay. The landlord will be responsible for pest control when the pests are a health issue..German roach infestation...rats/mice inside...brown recluse/ black widow spiders found inside. In general most spider infestation are just a nuisance, but even "benign" species can cause health issues to certain people so if a tenant is at risk from recurring spider bites that send them to the hospital I would think the landlord would be held liable to the extermination.
First, call the local board of health and ask them to document the situation. If the landlord does not exterminate soon, the tenant could hire an exterminator, and deduct that amount from the rent, sending the receipt to the landlord.
If you contact the health department and they determine that you have mold in your rental, pregnant or not, they can require the landlord to correct the problem or let you out of your lease. And, while I'm not real big on law suits, an attorney might get you a better deal than that if it can be proven that you have mold and the landlord refuses to fix the problem. Hint here. If you are going to seek an attorney do not tell your landlord you are going to do it. If you threaten him/her with a lawsuit they will have the advantage of using their attorney first.
Management or landlord. If no action - contact your local Health Department.
In nearly every area, a landlord has the obligation to provide a rental that is habitable and safe. Bed bugs (lice and similar nasty critters) are a serious health hazard. They often require fumigation of the living space. Mattresses and carpets can be full of lice and their eggs. That sounds like something for a professional, but it is doubtful that there is any specific requirement that he must hire someone. Your county health department can help you.
No, there is no requirements to replace carpet, ever, as long as it doesn't pose a health issue.
A landlord is responsible for providing a habitable dwelling that meets health and safety standards. Any situation that violates local and state ordinances should be reported to the building inspector.
Good nutrients require good health.
Contact the department of health if managment has not taken care of it.