This chapter, any drainage code to be adopted by the city council to implement this chapter, and any guidelines, rules, standards, specifications, requirements, regulations and procedures established pursuant to any section of such code are intended to provide the authority and processes to achieve cost-effective storm and surface water management in accordance with reasonable standards for such management in the Gig Harbor area as necessary to protect the health, safety and welfare of the citizens and of the city. Such reasonable standards shall be recommended by the administrator and approved by the city council. No city liability shall be inferred, implied or interpreted by the adoption and application of this chapter for damages to individual persons or properties which result from existing conditions or which occur subsequent to the date of this chapter. There shall be no liability associated with the utility’s approval of any privately constructed portion of the storm and surface water system and/or privately maintained portion of the storm and surface water system unless the city accepts the same as part of its publicly owned and/or maintained system and is negligent in its administration of such a system. (Ord. 448 § 6, 1984).