Chapter 13.24 CONTAMINATION PROTECTION This chapter is included in your selections. Sections: 13.24.010 Definitions. 13.24.020 Cross-connections—Prohibited. 13.24.030 Backflow prevention devices. 13.24.040 Administration of provisions—Yearly inspections. 13.24.050 Private water system—Use restricted. 13.24.060 Adoption of state provisions. 13.24.070 Declaration of nuisance—Abatement.