Whenever any installment of an assessment payable by the mode of payment by bonds shall become due and payable the city treasurer shall publish a notice thereof in one issue of the official newspaper, the date of said publication of which shall be at least thirty days prior to the date of the delinquency of such installment. Such notice shall be practically the same form as the notice that the assessment roll is in the treasurer’s hands for collection. In all cases of assessments or installments thereof becoming due and payable, the city treasurer shall mail a notice thereof to the owner of the property assessed when the post office address of the owner is known, but failure to mail the same shall not be fatal when a notice is published as required by this section. (Prior code § 13.48.210.)