Disclaimer: The materials provided below are informational and should not be relied upon as legal advice.
If you believe there are health and safety issues with your unit, you should report it to the housing department. An inspector will come by and make a report. Be sure to consult your own attorney to protect your legal rights.
More importantly, it is a health risk to continue to live in such conditions. If you want to argue constructive eviction to move and terminate the tenancy, you need to act relatively soon after learning of the health problem. Assuming the problem is extensive enough that the landlord cannot remedy the situation promptly, you may want to move.