An adequate ___ is one of the most important governances in modern and healthful human existence that involves air, water and food which is the basic necessities of life.

Modern or state-of-the-art plumbing installation now require the close coordination of works among Master Plumbers, Architects and Engineers to come up with the ost ___ and ___ plumbing installation.

All premises intended for human habitation, occupancy or use shall be provided with a supply of __ and ___water, neither connected with unsafe water supplies nor subject to hazards of backflow or back-siphonage.

Plumbing fixtures, devices and appurtenances shall be supplied with water in ___ volume and a pressure ___ to enable them to function satisfactorily and without undue noise under all normal conditions of use.

Plumbing shall be designed and adjusted to use the ___ quantity of water consistent with proper performance and cleaning.

Devices for heating and storing water shall be so ___ and ___explosion through overheating.

Every building having plumbing fixtures installed and intended for ___, occupancy or use on premises abutting on a street, alley or easement where is a public sewer, shall be connected to the sewer system.

Each family dwelling unit on premises abutting on a sewer or with a private sewage-disposal system shall have at least ___ and ___. Further, a lavatory and bathtub or shower shall be installed to meet the basic requirements of sanitation and personal hygiene.

Plumbing fixtures shall be made of material, free from concealed fouling surfaces and shall be located in ventilated enclosures.

The drainage system shall be designed, constructed and maintained to ___ against fouling, deposit of solids, clogging and with adequate cleanouts so arranged that the pipes may be readily cleaned.

All pipings of plumbing systems shall be of NAMPAP-APPROVED materials, free from defective workmanship, designed and constructed by Registered Master Plumbers to ensure satisfactorily service.

Each fixture directly connected to the drainage system shall be equipped with a ___.

____ be designed to provide adequate circulation of air free from siphonage, aspiration for forcing of trap seals under ordinary use.

___ shall extend to the outer air and installed to preempt clogging and the return of foul air to the building.

Plumbing system shall be subjected to such test to ___ disclose all leaks and defects in the workmanship.

____ which will clog the 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.

____ 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.

No ___ shall be located in a room or compartment which is not properly lighted and ventilated.

If water closets or other plumbing fixtures are installed in buildings where there is no sewer within a reasonable distance, ___ shall be made for disposing of the building sewage by some accepted method of sewage treatment and disposal, such as ___.

Where a plumbing drainage system may be subject to backflow of sewage, suitable provision shall be made to ____ its overflow in the building.

All plumbing fixtures shall be installe ___ to be accessible for their intended use.

Plumbing shall be installed by Registered Master Plumbers with due regard to the ___ of the strength of structural members and the ___ of damage to walls and other surfaces through fixture usage.

Sewage or other waste from a plumbing system which may be ___ to surface or sub-surface waters shall not be discharge into the ground or into any waterway, unless first rendered ___ through subjection to some acceptable form of treatment.