These Rules and regulations, hereinafter referred to as this Code is founded upon certain basic principles of environmental sanitation and safety through properly designed, acceptably installed, and adequately maintained plumbing systems. Some of the details of plumbing construction may vary but the basic sanitary and safety principles desirable and necessary to protect the health of people are the same everywhere. As interpretations may be required, and as unforeseen situations arise which are not specifically covered in this Code, the 23 principles which follow shall be used to define the intent.
A. 
Principle No. 1. All occupied premises shall have potable water. All premises intended for human habitation, occupancy, or use shall be provided with a supply of potable water. Such a water supply shall not be connected with unsafe water sources, nor be subject to the hazards of backflow or back-siphonage without proper protective devices.
B. 
Principle No. 2. Adequate water required. Plumbing fixtures, devices and appurtenances shall be supplied with water in sufficient volume and at pressures adequate to enable them to function properly and without undue noise under normal conditions of use.
C. 
Principle No. 3. Hot water required. Hot water shall be supplied to all plumbing fixtures which normally need or require hot water for their proper use and function.
D. 
Principle No. 4. Water conservation. Plumbing shall be designed and adjusted to use the minimum quantity of water consistent with proper performance and cleaning.
E. 
Principle No. 5. Dangers of explosion or overheating. Devices for heating and storing water shall be so designed and installed as t guard against dangers from explosion or overheating.
F. 
Principle No. 6. Use public sewer where available. Every building with installed plumbing fixtures and intended for human habitation, occupancy, or use, and located on premises where a public sewer is on or passes said premises within a reasonable distance, shall be connected to the sewer.
G. 
Principle No. 7. Required plumbing fixtures.
(1) 
Each family dwelling unit shall have at least one water closet, one lavatory, one kitchen-type sink, and one bathtub or shower to meet the basic requirements of sanitation and personal hygiene. Single family dwellings shall also have adequate laundry facilities.
(2) 
All other structures for habitation shall be equipped with sufficient sanitary facilities. Plumbing fixtures shall be made of durable, smooth, nonabsorbent and corrosion resistant material and shall be free from concealed fouling surfaces.
H. 
Principle No. 8. Drainage system of adequate size. The drainage system shall be designed, constructed, and maintained to guard against fouling, deposit of solids, and clogging, and with adequate cleanouts so arranged that the pipes may be readily cleaned.
I. 
Principle No. 9. Durable materials and good workmanship. The piping of the plumbing system shall be of durable material, free from defective workmanship and so designed and constructed as to give satisfactory service for its reasonable expected life.
J. 
Principle No. 10. Liquid sealed traps required. Each fixture directly connected to the drainage system shall be equipped with a liquid-seal trap.
K. 
Principle No. 11. Trap seals shall be protected. The drainage system shall be designed to provide an adequate circulation of air in all pipes with no danger of siphonage, aspiration, or forcing of trap seals under conditions of ordinary use.
L. 
Principle No. 12. Exhaust foul air to outside. Each vent terminal shall extend to the outer air beyond the building structure and be so installed as to minimize the possibilities of clogging and the return of foul air to the building.
M. 
Principle No. 13. Test the plumbing system. The plumbing system shall be subjected to such tests as will effectively disclose all leaks and defects in the work or the material.
N. 
Principle No. 14. Exclude certain substances from the plumbing system. No substance which will clog or accentuate clogging of pipes produce explosive mixtures, destroy the pipes or their joints, or interfere unduly with the sewage-disposal process shall be allowed to enter the building drainage system.
O. 
Principle No. 15. Prevent contamination. Proper protection shall be provided to prevent contamination of food, water, sterile goods, and similar materials by backflow of sewage. When necessary, the fixture, device, or appliance shall be connected indirectly with the building drainage system.
P. 
Principle No. 16. Light and ventilation. No water closet or similar fixture shall be located in a room or compartment which is not properly lighted and ventilated.
Q. 
Principle No. 17. Individual sewage disposal systems. If water closets or other plumbing fixtures are installed in buildings where there is no sewer within a reasonable distance, suitable provision shall be made for disposing of the sewage by some accepted method of sewage treatment and disposal.
R. 
Principle No. 18. Prevent sewer flooding. Where a plumbing drainage system is subject to backflow of sewage from the public sewer, suitable provision shall be made to prevent its overflow in the building.
S. 
Principle No. 19. Proper maintenance. Plumbing systems shall be maintained in a safe and serviceable condition from the standpoint of both mechanics and health.
T. 
Principle No. 20. Fixtures shall be accessible. All plumbing fixtures shall be so installed with regard to spacing as to be accessible for their intended use and cleansing.
U. 
Principle No. 21. Structural safety. Plumbing shall be installed with due regard to preservation of the strength of structural members and prevention of damage to walls and other surfaces through fixture usage.
V. 
Principle No. 22. Protect ground and surface water. Sewage or other waste shall not be discharged into surface or sub-surface water unless it has first been subjected to some acceptable form of treatment.
W. 
Principle No. 23. Storm water disposal. Buildings shall be equipped with provision for draining water from roofs, paved areas or areas using a topping or finish capable of collecting water. Storm water shall be conveyed to an adequate and unobjectionable system of storm water disposal such as a public storm or combined sewer where reasonably available. Where no public storm sewers are reasonably available then the Administrative Authority having jurisdiction shall be consulted for proper disposal areas. Storm water shall not be discharged so that water flows across public sidewalks, drains onto adjacent premises, causes erosion of soil, forms a pond on the premises or causes water to be discharged into occupied dwellings.