(2)(a) If a landlord fails to fulfill any substantial obligation imposed by RCW 59.18.060 that substantially endangers or impairs the health or safety of a tenant, including (i) structural members that are of insufficient size or strength to carry imposed loads with safety, (ii) exposure of the occupants to the weather, (iii) plumbing and sanitation defects that directly expose the occupants to the risk of illness or injury, (iv) lack of water, including hot water, (v) heating or ventilation systems that are not functional or are hazardous, (vi) defective, hazardous, or missing electrical wiring or electrical service, (vii) defective or inadequate exits that increase the risk of injury to occupants, and (viii) conditions that increase the risk of fire, the tenant shall give notice in writing to the landlord, specifying the conditions, acts, omissions, or violations. Such notice shall be sent to the landlord or to the person or place where rent is normally paid.