Chapter 13.16 SEWER AND WATER IMPROVEMENTS This chapter is included in your selections. Sections: 13.16.010 Purpose. 13.16.015 Responsibility for plans. 13.16.020 Required public improvements. 13.16.025 Water supply system. 13.16.030 Sanitary sewer system. 13.16.035 Guarantee of completion. 13.16.040 Variances authorized.