G5 SANITARY DRAINAGE SYSTEM

is a piping system that conveys sewage or liquid waste to Sanitary Drainage System
an approved disposal point. It should be designed and
installed for reliable function, using materials, fittings, and
connections regulated by codes and standards.
sometimes referred to as sewage is used water comes Wastewater
from almost all sections of the building Including the
bathrooms kitchen and laundry areas.
ESSENTIAL COMPONENTS OF SANITARY BUILDING SYSTEM Traps
(8) Interceptors
Fixture branches
Stacks
Building drain and sewer
Sanitary sewer main
Vents
Cleanouts
is a u-shaped pipe that catches and holds a small quantity Traps
of waste water that is poured down a fixture drain. The
trapped water prevents gases resulting from waste water
decomposition from entering the building through the
drain pipes and the fixture.
TYPES OF TRAPS (5)/ (9) P trap
S trap
Q trap
Floor trap
Gully trap

Running trap
Bell trap
Intercepting trap
Grease trap
exit into the wall behind the sink the traps are made from P trap
upvc or cast-iron sheets this drop also has a water seal and
prevents entry of fall gases to the
This trap is used in toilet underwater closet it is almost Q trap
similar to the s-trap and is used in the upper story other
than the ground floor.
This strap is usually used with siphoning pipe it is similar to S trap
the p-trap and is used for fixing water closets in toilets.
is installed on the floor to collect wastewater from the Foor trap
bathroom, wash zone, washbowl, and kitchen sinks, among
other places.
These traps are built outside the building to carry Gully trap
wastewater discharge from wash basins, sinks, and
bathrooms.
A passive device in a plumbing system that separates and Interceptor
retains substances like oil, hair, sand, wax, or debris from
wastewater before it enters the sewer line, preventing
blockages, backups, and contamination that complicates
and increases the cost of treatment.
Each plumbing fixture is connected horizontally to the Fixture branch
sanitary drainage system by a drain line called a fixture
branch. Branch piping which serves urinals water closets
showers or tubs is usually run under the floor.
Branch piping may be: (4) Copper
Approved plastic
Galvanized steel
Cast-iron
The fixture branches feed into a vertical pipe referred to as Stack
2 kinds of stacks Soil stack
Waste stack
Is when the waste water that the stock will carry includes Soil stack
human waste from water closets or from fixtures that have
similar functions.
Is when the stock will carry all what waste except human Waste stack
waste
the soil or waste stocks feed into a main horizontal pipe. Building drain
By definition, the building drain extends to a point two to
five feet outside the foundation wall of the building.
is an extension of the building drain that carries waste Building sewer
water from the building drain to a community sanitary
sewer main or an individual onsite sewage treatment
system.
It is a pipe through which the waste water flows as it is Sanitary sewer main
conveyed from a building to the wastewater treatment
plant. Typically, the minimum size of a community sanitary
sewer main for a gravity-based system should be 8 inches
in diameter.
These are pipes that allow enough amount of air into the Vents
drainage system which help in reducing air turbulence
from (siphoning or back pressure) also in releasing sewer
gases outside the system. Vent piping may be copper,
plastic, cast iron or steel.
Types of venting method (3) Individual venting
Common venting
Wet venting
One fixture, one vent Individual venting
Two fixtures, one vent Common venting
All fixture, one vent Wet venting
are screw-type fittings with a cap that can unscrew to Cleanouts
allow access to the inside of sanitary drain pipes.
2 types of cleanouts Floor cleanouts
Wall cleanouts
G4 DOMESTIC WATER HEATING
is the process of warming water for personal use within a Domestic water heating
residential or commercial setting.
WATER HEATING METHODS (4) Storage tank water heaters
Tankless water heaters
Heat pump water heaters
Solar water heaters
are the most commonly used type of water heater for Storage tank water heaters
homes. In these systems, heated water is held in a tank so
that a certain quantity of hot water is available at any time.
are heaters that heat flowing water and thus do not Tankless Water Heaters
require a storage tank. The water is heated only when
needed, this increases efficiency by eliminating standby
losses.
use electricity and take heat from the air and move it to Heat Pump Water Heaters
the water instead of converting electricity directly to heat.
These systems make use of solar collectors, a circulating Solar water heaters
pump, as well as storage tanks. These are usually used to
preheat water, using a conventional heater after
ELECTRIC WATER HEATER COMPONENTS (9) Heater tank and insulation
Cold water inlet and dip tube
Hot water outlet
Resistor/heating elements
Thermostat
Air bleed
Temperature/pressure relief valve
Sacrificial anode
Drain valve
The tank is surrounded by insulation to reduce the amount Heater tank and insulation
of heat that is lost to the surrounding air, thereby
increasing its efficiency.
Cold water is fed to the water heater via the cold-water Cold water inlet and dip tube
inlet, flowing through the dip tube to the very bottom of
the tank.
Once the water in the tank is heated, it leaves the tank via Hot water outlet
the______. Will also have its own valve so that the water
heater can be hydraulically isolated; this is achieved by
closing the inlet and outlet valves on the water heater.
The heating elements are installed perpendicular to the Resistor/heating elements
length of the tank. Each heating element consists of an
electrical resistor housed within a heat-conducting tube
and connected to an external electrical supply
used to control the temperature of the water in the tank; it Thermostat
achieves this by controlling when the heating elements are
turned on and off.
used to release air from the tank; for example, after Air Bleed
maintenance has been conducted.
will open if the water in the tank reaches too high a Temperature/pressure relief valve
temperature, or, if over-pressurization occurs (the
pressure becomes too high). In either of these
circumstances, the valve opens and releases water through
a drainpipe.
The anode corrodes over time, preventing galvanic Sacrificial Anode
corrosion occurring on more vital -and expensive- metal
surfaces.
used to drain water from the tank, for example, when Drain Valve
maintenance needs to be conducted.

G3 BUILDING WATER SYSTEM DESIGN

encompass all the infrastructure and components that Building water systems
manage the distribution, usage, and disposal of water
within a building. This includes systems for potable water,
wastewater, rainwater, and even specialized systems like
those for fire suppression.
MAIN PARTS OF A WATER SYSTEM (6) Building supply
Water meter
Building main
Riser
Fixture branch
Fixture connection
is a large water supply pipe that carries potable water from Building supply
the district or city water system or other water source to
the building.
- It is required by most district water supply systems to Water meter
measure and record the amount of water used. It may be
placed in a meter box located in the ground near the street
or inside the building.
It is a large pipe that serves as the principal artery of the Building main
water supply system. It carries water through the building
to the furthest riser. The ______is typically run (located) in
a basement, in a ceiling, in a crawl space, or below the
concrete floor slab.
This is a water supply pipe that extends vertically in the Riser
building at least one story and carries water to fixture
branches. It is typically connected to the building main and
runs vertically in the walls or pipe chases
- a water supply pipe that runs from the riser or main to Fixture branch
the fixture being connected. In a water supply system, it is
any part of a piping system other than a riser or main pipe.
Fixture branch pipes supply the individual plumbing
fixtures.
runs from the fixture branch to the fixture, the terminal Fixture connection
point of use in a plumbing system. A shut-off valve is
typically located in the hot and cold water supply at the
fixture connection.
Two basic types of water supply distribution systems Upfeed distribution system
Downfeed distribution system
water is pumped directly from the main supply or a storage Upfeed distribution system
tank to the upper floors of a building.
water is first pumped up to a storage tank located at a high Downfeed distribution system
point in the building, usually on the roof.
is a force exerted by the weight of the fluid against the Hydrostatic force
walls of a vessel containing the fluid.
the hydrostatic force per unit area, is perpendicular to the Hydrostatic pressure
interior walls at every point.
is the driving force behind fluid flow. Water pressure Water pressure difference
available at the water service is lost as water flows through
the piping of a plumbing system.
is from friction loss as the water moves through the system pressure loss or pressure drop
and pressure loss as water is forced to a higher elevation
Water pressure available at the water service is considered 40 to 80 psi (275 to 550 kPa)
acceptable in the range of
________ in the fluid move in the direction of the least molecules
pressure
_________is caused by a pressure difference in the fluid. Fluid flow
WATER SUPPLY DESIGN CONCERN (9) Cavitation
Cross-connections
Backflow
Water hammer
Thermal expansion
Aging
Testing
Pipe insulation
Leaks
will vary by type of fixture and water pressure at the Flow rate
fixture. Each fixture in a plumbing system is designed to
operate at a specific flow rate, expressed in gallons per
minute.
is the portion of water use that is not returned to the Water consumption
original water source after being withdrawn.
The instantaneous peak demand for water in a pipe serving Design load
a number of plumbing fixtures or serving an entire building
is referred to as the _________
A method of estimating the design load for a group of Fixture unit
plumbing fixtures is typically based on a quantity called
the________
The flexible plastic water supply hose for lavatories and Elasticity
water closets is gaining popularity due to its: Adjustability and ease of installation
Convenience for repair and replacement of
defective parts
Reduced susceptibility to water leaks
G2 PLUMBING
is a complex system designed to bring fresh water into a Plumbing
home, distribute it to various fixtures, and remove
wastewater efficiently.
THREE TYPES OF PLUMBING Potable Water Supply System
Sanitary Drainage System
Storm Water Drainage System

bring fresh, clean water into a home from an external Potable Water Supply System
source.

remove waste water and sewage from houses, preventing Sanitary Drainage System
contamination and maintaining hygiene.

are designed to manage and direct rainwater and melting Storm Water Drainage System
snow away from urban areas, such as streets, parking lots,
and buildings, to prevent flooding and erosion.

are fundamental to the performance, safety, and efficiency Basic Plumbing Materials
of plumbing systems. Their proper selection and use are
vital for maintaining a reliable and effective plumbing
infrastructure.
BASIC PLUMBING MATERIALS (7) Pipes
Valve
Plumbing Tape
Seals and Gaskets
Clamps and Supports
Fittings
Fixtures

TYPES OF PIPES (4) Plastic pipes

Cast Iron Pipes
Galvanized Iron Pipes
Copper Pipes
lightweight, flexible, durable, and versatile. Products are Plastic pipes
made of plastics and composite materials and are used in
many of the same applications as traditional metal and
ceramic piping.

COMMON SAMPLES OF PLASTIC PIPES (4) PVC (Polyvinyl Chloride)

PE Pipe (Polypropylene Pipe)
PPR Pipe (Polypropylene Random
Copolymer)
CPVC (Chlorinated Polyvinyl Chloride)
is commonly used in plumbing due to its affordability, PVC (Polyvinyl Chloride)
corrosion resistance, and ease of installation, serving to
transport water and other fluids efficiently within
residential and commercial buildings.
A type of flexible plastic piping used for a variety of PE Pipe (Polypropylene Pipe)
applications.
is a durable and versatile thermoplastic piping material PPR Pipe (Polypropylene Random
known for its high melting point, excellent chemical Copolymer)
resistance, and longevity, making it suitable for a variety of
applications including hot and cold water supply, heating
systems, and the transport of corrosive substances.
is a thermoplastic material produced by chlorinating PVC CPVC (Chlorinated Polyvinyl Chloride)
resin, resulting in a material with increased heat
resistance, chemical inertness, mechanical strength, and
fire retardancy, making it suitable for applications such as
hot and cold water supply pipes. Used for both hot and
cold water supply lines. More heat-resistant than standard
PVC.
is a durable and long-lasting material traditionally used for Cast iron pipes
drainage, waste, and sewer systems. It is known for its
strength and ability to handle high pressure and heavy
loads, making it ideal for underground and high-traffic
applications.
is steel pipe coated with a layer of zinc to prevent rust and Galvanized Iron Pipes
corrosion. This coating extends the pipe's lifespan, making
it a popular choice for water supply and plumbing systems
in older buildings.
is a widely used plumbing material known for its durability, Copper Pipes
resistance to corrosion, and ability to handle both hot and
cold water. It is highly regarded for its longevity and
reliability in water supply systems
Control the flow of water. Valves
3 TYPES OF VALVES Ball valve
Gate valve
Check valve
Provide quick on/off control. Ball valve
Used for more gradual flow control. Gate valve
Prevent back flow of water Check valve
Used to seal threaded connections and prevent leaks. Plumbing Tape
-often referred to as thread seal tape or Teflon tape, is a
versatile tool used to seal pipe threads, preventing leaks
and ensuring a secure connection.
are essential components that ensure the integrity of Seals and Gaskets
connections and joints, preventing leaks that could lead to
water damage, loss of pressure, or other plumbing issues.

2 examples of seals and gaskets O-rings

Rubber gaskets
Used in various connections. O-rings
Provide a seal between flanges or joints. Rubber gaskets
are integral components in plumbing systems, providing Clamps and Supports
both stability and security for pipes, fittings, and
equipment, thereby ensuring the reliable operation and
longevity of the entire plumbing infrastructure.
TYPES OF CLAMPS (4) Pipe clamps
Hose clamps
Pipe hangers
Split clamps
TYPES OF SUPPORTS (4) Pipe supports
Channel supports
Floor and ceiling supports
Pipe racks
Secure pipes to surfaces, reducing movement. Pipe clamps
Fasten hoses to fittings, preventing leaks. Hose clamps
Support and hold pipes in place, ensuring proper Pipe hangers
alignment.
Hold pipes tightly while allowing for adjustments. Split Clamps
Provide essential support to prevent sagging and Pipe Supports
movement.
Offer a versatile framework to attach and align pipes Channel supports
securely.
Anchor pipes to floors and ceilings, stabilizing vertical and Floor and Ceiling Supports
horizontal runs.
Organize and support multiple pipes, often in a structured Pipe racks
manner, for easy access and maintenance.
refers to various types of components used to connect, Fittings
redirect, or modify the direction of pipes and tubes within
a plumbing system. These fittings are essential for creating
a functional plumbing layout, as they allow for the
configuration of pipes to fit specific installation
requirements and operational needs.
COMMON TYPES OF PLUMBING FITTINGS (10) Elbows
Tees
Couplings
Reducers
Caps and plugs
Adaptors
Nipples
Unions
Valves
Bushings
Change the direction of pipes, typically by 90 or 45 Elbows
degrees.
Allow three pipes to connect, creating a branching point. Tees

Connect two pipes end-to-end. Couplings

Connect pipes of different sizes, reducing or increasing the Reducers
diameter
Close off the ends of pipes or fittings. Caps and plugs
Connect pipes with different thread types or materials. Adaptors
Short sections of pipe used to connect other fittings or Nipples
components.
Provide a detachable connection between two pipes or Unions
fittings.

Control the flow of water through the pipes. Valves

Reduce the diameter of a pipe fitting, allowing for different Bushings
sizes to connect.

refer to devices or appliances that are connected to a Fixtures

plumbing system and used to deliver or drain water. These
fixtures are essential for various functions within a
building, such as bathing, cooking, washing, and waste
disposal.
KITCHEN FIXTURES: (3) Sink
Dishwasher
Garbage disposal
A basin with faucets for washing dishes, food preparation, Sink
and cleaning
Connected to the water supply and drain for washing Dishwasher
dishes automatically.

Installed under the sink to shred food waste for drainage. Garbage disposal
BATHROOM FIXTURES: (3) Toilet
Bathtub
Shower
A fixture for disposing of human waste, connected to both Toilet
water supply and sewage/drainage system.

Used for bathing and connected to both hot and cold Bathtub
water supplies, with a drain for wastewater.

Provides a spray of water for bathing, connected to hot Shower

and cold water supplies, with a drain.
LAUNDRY ROOM FIXTURES: (2) Washing machine
Utility sink
Connected to both water supply (hot and cold) and Washing machine
drainage system for washing clothes.
Used for handwashing, cleaning, and other utility tasks, Utility sink
connected to water supply and drain.

UTILITY FIXTURES: (2) Water Heater

Sump Pump
Provides hot water to fixtures throughout the building. Water Heater
Used to remove accumulated water from basements or Sump Pump
areas prone to flooding.

OUTDOOR FIXTURES: (2) Hose Bib

Sprinkler System
Provides water for outdoor use, such as gardening or Hose bib
washing vehicles.

Automatically distributes water to lawns or gardens Sprinkler system

G1 BASIC PRINCIPLES OF SANITARY/PLUMBING DESIGN
- It is the art and science of installing pipes, fixtures, and Plumbing
other apparatus to convey and supply water in buildings
and to dispose and discharge wastewater and other
liquids, gases, and other substances out of the building in a
safe orderly, healthy, and sanitary way to ensure the
health and sanitation of life and property.
- is a skilled tradesperson who specializes in installing, Plumber
maintaining, and repairing systems used for water,
sewage, and drainage in residential, commercial, and
industrial buildings.
- It refers to the measures and practices that promote Sanitation
hygiene and prevent disease, especially through the
provision of clean drinking water and the proper disposal
of sewage and other waste.
COMMON PLUMBING SANITATION CHALLENGES (5) Clogged Drains
Leaky Faucets and Pipes
Water Pressure Issues
Sewer Line Blockages
Grease Trap Management
BEST PRACTICE FOR PLUMBING SANITATION (5) Regular Maintenance
Preventative Measures
Hydro Jetting
Leak Detection and Repair
Grease Trap Cleaning
BASIC PRINCIPLES OF PLUMBING (6) 1. All premises intended for human
habitation, occupancy or use shall be
provided with a supply of pure and
wholesome water, neither connected with
unsafe water supplies nor subject to
hazards of backflow or back-siphonage.
2. Every building having plumbing fixtures
installed and intended for human
habitation, occupancy or use on premises
abutting on a street, alley or easement
where there is a public sewer, shall be
connected to the sewer system.
 3. Each family dwelling unit on premises
abutting on a sewer or with a private
sewage disposal system shall have at least
one water closet and one kitchen-type
sink. Further, a lavatory and bathtub or
shower shall be installed to meet the basic
requirements of sanitation and personal
hygiene.
4. Each fixture directly connected to the
drainage system shall be equipped with a
water sealed trap.
5. Vent terminals shall extend to the outer
air and installed to preempt clogging and
the return of foul air to the building.
6. Plumbing systems shall be subjected to
such tests to effectively disclose all leaks
and defects in the workmanship.
The Philippine Code of Sanitation Presidential Decree No. 856
No artesians, deep or shallow well shall be constructed 25m
within ______from any source of pollution.

Criteria set by the National Drinking Water Standards: (2) a. No artesians, deep or shallow well shall
be constructed within 25 meters from any
source of pollution.
b. No person charged with the
management of a public water supply
system shall permit any physical
connection between its distribution,
system and that of any other water supply,
unless the latter is regularly examined as to
its quality by those in charge of the public
supply to which the connection is made
and found to be safe and potable.

Outlines specific regulations to ensure that food The Philippine Code of Sanitation
establishments maintain high standards of cleanliness and
hygiene through adequate sanitary facilities and proper
waste disposal.
Food establishments must obtain the necessary permits Licensing permit and requirements
and licenses from local health authorities before
commencing operations. This ensures that they meet all
regulatory requirements from the start and continue to
comply with health and safety standards.
are crucial components of food safety and hygiene in food Sanitary Facilities and Waste Disposal
establishments. They involve the provision of clean
handwashing stations and restrooms, efficient waste
management systems, and effective pest control
measures, all of which contribute to a safe and healthy
environment for food preparation and consumption
SANITARY FACILITIES AND WASTE DISPOSAL (4) Handwashing Stations
Waste Disposal
Restrooms
Grease Traps
Must be conveniently located, supplied with soap, and Handwashing Stations
equipped with sanitary drying facilities to encourage
proper hand hygiene among staff.
Proper containers with lids must be provided for waste Waste disposal
collection, and waste must be regularly removed from food
preparation and storage areas to prevent pest attraction
and contamination.
Clean, well-maintained, and adequately supplied Restrooms
restrooms must be available for both staff and customers.
Must be installed in kitchens to prevent grease from Grease traps
entering the drainage system and causing blockages or
contamination.
REGULATORY REQUIREMENTS (3) Temperature control
Cross-contamination prevention
Hygienic practices
Foods must be stored at appropriate temperatures to Temperature control
prevent spoilage and bacterial growth. Refrigerators and
freezers must be regularly monitored to ensure they are
functioning correctly
Raw and cooked foods must be stored separately to Cross-contamination prevention
prevent cross-contamination. Equipment and surfaces
should be cleaned and sanitized regularly
Staff must follow proper hygiene practices, including Hygienic practices
wearing clean uniforms, using hair restraints, and avoiding
direct hand contact with food by using gloves or utensils.
School Sanitation and Health Services Foreign schools
Section 1 - These implementing rules and regulations shall Technical / Vocational Schools
apply to: Special Training or Trade Schools Training
Centers
Day Care or Child Care Centers
Nursery, Kindergarten Schools and
Children’s Institution
With the exemption of: Sunday Schools
Dancing and Music Schools
Physical Fitness and Slimmer Schools
Massage Schools
Embalming Schools
Martial Arts and Yoga Schools Swimming
Schools and Scuba-Diving Schools
Sanitary Permit 1. No person or entity shall operate an
establishment mentioned in Section 1
 without a sanitary permit issued by the
local health officer.
2. Any extension, additional construction
or alteration of the establishment shall
require a new sanitary permit before it
could be operated.
Record of Sanitary Permit 1. Every city/municipality shall keep a
record of all establishments which have
been issued sanitary permits and renewal
thereof.
SANITARY FACILITIES AND REQUIREMENTS (5) Toilet facilities
Hand washing facilities
Water supply
Food establishment
Sewage disposal and drainage

TOILET FACILITIES (6) a. Designated toilets for male and female.

b. Toilet facilities shall be easily accessible
to the students and school personnel.
c. Toilet rooms shall be properly lighted
and ventilated.
d. In pre-schools, toilets shall be located
within or adjacent to playroom or
classroom.
e. In pre-schools and elementary schools,
there shall be enough low toilet seats with
the height of 35 cms. for the small children.
f. The toilet shall be accessible to person
with disability.
HAND-WASHING FACILITIES (2) Installation of Lavatories
Maintenance of Lavatories
The water supply shall be adequate and portable whether Water Supply
from a public or from the private water supply system.
Food served within the school compound shall comply with Food Establishment
the provisions of "Food Establishment" of the Code on
Sanitation of the Philippines (P.D. 856)
Schools with restaurants and food outlets shall be provided Sewage Disposal and Drainage
with properly designed grease traps.
refers to the process of gathering and removing Sewage Collection
wastewater from households and communities to prevent
contamination of the environment and water sources
is the disposal of waste matter such as feces or dirty water Sewage Disposal
from homes and factories. It is carried away in sewers or
drains for dumping or conversion into a form that is not
toxic
Importance of Sewage Collection Collection of sewage prevents surface
environmental contamination as well as
 seepage into groundwater and
contamination of local water sources
Importance of Sewage Disposal It safeguards a community's water supply
by removing water-carried wastes
including microscopic, dissolved material,
solid matter such as human waste, and
harmful chemicals and bacteria.
HISTORY OF PLUMBING
criteria set by the National Drinking Water Standards.
Birth of the plumbing profession in the Philippines 17th century
Filipino plumbers were assigned the task of maintaining, 18th and 19th Centuries
repairing and/or remodeling plumbing systems in all
"pueblos" or towns including churches, convents and
government buildings.
PLUMBING took a great leap with the arrival of the 20th Century
American soldiers, engineers, Thomasite teachers, doctors
and evangelists. Health and hygiene became priority when
epidemics including cholera, leprosy. schistosomiasis and
other contagious diseases engulfed the Philippines.
PLUMBING TRADE was duly recognized by the government. 1902
The City of Manila was the model community
Became the first Chief of the Division of Plumbing Master Plumber John F. Hass
Construction and Inspection
A plumbing code based on the Plumbing Code of the Filipino Master Plumbers Initiative
United States was incorporated into the Building Code for
the City of Manila
NAMPAP was organized and registered with SEC 1935
Initiated by NAMPAP practice of plumbing was eventually City Ordinance 2411 – (The Plumbing Code
placed under the Department of Public Services for the City of Manila)
Emanated from House Bill 962 on 1954 signed by President R.A. 1378 (June 18, 1955) - Plumbing Law
Ramon Magsaysay of the Philippines
Prepared by the NAMPAP was promulgated and approved January 28, 1959 (National Plumbing Code
by Malacañang. NAMPAP also assisted in the passage of of the Philippines)
the law creating the National Waterworks and Sewerage
Authority (NAWASA).
Prepared by Board of Examiners for Master Plumbers and 1966-1969 Curriculum for Plumbing
the NAMPAP and was approved by the DEPED and was first Engineering
introduced at the Feati University.
1st Amendment to the National Plumbing Code was November 28, 1967
approved, which effected the inclusion of
"ASBESTOS·CEMENT PIPE" as an approved plumbing
material
Republic Act No. 6541 otherwise known as the “Building 1972 (Before Martial Law)
Code of the Philippines" was passed with the "National
Plumbing Code of 1959" as referral code in full text
NAMPAP President JAIME M. CABASE spearheaded the 1996
updating of the Revised National Plumbing Code
NAMPAP submitted the Draft Code to the Board of Master October 1999
Plumbers (BOMP) Chaired by Engr. FORTIJNATO H.
AMOSCO.
President JOSEPH EJERCITO ESTRADA approved Revised December 21, 1999
Plumbing Code of 1999