Trumbull, Conn., Mun. Code ch. 10 § 10-9

No person shall occupy as owner, occupant or let to another for occupancy any dwelling unit, for the purpose of living therein, which does not comply with the following requirements: (1)
Every foundation, floor, roof, ceiling, exterior and interior wall shall be reasonably weathertight, watertight and damp-free, shall be kept in sound condition and good repair, and shall be capable of affording privacy for the occupants.
(2) Every window, exterior door and basement hatchway or similar devices, shall be kept rodentproof and reasonably watertight and weathertight, and shall be kept in sound working condition and good repair. In addition:
a. During that portion of the year when there is a need for protection against mosquitoes, flies and other flying insects, every door opening directly from a dwelling unit to outside space shall have supplied properly fitting screens having at least sixteen (16) mesh and self-closing device; and every window or other device with openings to outdoor space used or intended to be used for ventilation shall likewise be supplied with screens.
b. Every window located at or near ground level used or intended to be used for ventilation, and every other opening located at or near ground level which might provide an entry for rodents, shall be supplied with adequate gauge screen or such other devices as will effectively prevent their entrance.
(3) Every dwelling, other building or accessory structure shall be rodentproof and maintained so as to prevent rodent harborage.
(4) Every foundation, roof, floor, exterior and interior wall, ceiling, inside and outside stair, every porch and every appurtenance thereto shall be safe to use and capable of supporting the loads that normal use may cause to be placed thereon; and shall be kept in sound condition and good repair. Every inside and outside stair or step shall have uniform risers and treads, and stairways shall have handrails, structurally sound, of reasonable height and, where needed, balustrades adequately spaced.
(5) Every plumbing fixture and water and waste pipe shall be properly installed and maintained in good sanitary working condition.
(6) Every water closet compartment, bathroom and kitchen floor surface shall be constructed and maintained so as to be reasonably impervious to water so as to permit such floor to be easily kept in a clean and sanitary condition.
(7) Every plumbing fixture and pipe, every chimney, flue and smoke pipe, and every facility, piece of equipment, or utility which is present in a dwelling or dwelling unit, or which is required under this chapter, shall be constructed and installed in conformance with the applicable local, state or national codes and shall be maintained in satisfactory working condition.
(8) No owner, operator or occupant shall cause any service, facility, equipment or utility which is required under this chapter to be removed from or shut off from or discontinued for any occupied dwelling or dwelling unit let or occupied by him; except for such temporary interruption as may be necessary while actual repairs or alterations are in process, or during temporary emergencies when discontinuance of service is approved by the appropriate authority.
(9) All construction and materials and ways and means of egress and installation and use of equipment shall conform to applicable state and local laws dealing with fire protection.