Page 58 - 2018_IPC

CHAPTER 6

WATER SUPPLY AND DISTRIBUTION

User note:
About this chapter: Many plumbing fixtures require a supply of potable water. Other fixtures could be supplied with nonpotable water such
as reclaimed water. Chapter 6 covers the requirements for water distribution piping systems to and within buildings. The regulations include
the types of materials and the connection methods for such systems. The prevention of backflow of contaminated or polluted water into any
potable water system is critical for protection of users of potable water. This chapter regulates the assemblies, devices and methods that are
used for this purpose.

SECTION 601 ual water supply unless properly treated by approved
GENERAL means to prevent contamination. Individual water supplies
shall be constructed and installed in accordance with the
601.1 Scope. This chapter shall govern the materials, design
and installation of water supply systems, both hot and cold, applicable state and local laws. Where such laws do not
for utilization in connection with human occupancy and habi- address all of the requirements set forth in NGWA-01,
tation and shall govern the installation of individual water individual water supplies shall comply with NGWA-01 for
supply systems. those requirements not addressed by state and local laws.
601.2 Solar energy utilization. Solar energy systems used 602.3.2 Minimum quantity. The combined capacity of
for heating potable water or using an independent medium for the source and storage in an individual water supply sys-
heating potable water shall comply with the applicable tem shall supply the fixtures with water at rates and pres-
requirements of this code. The use of solar energy shall not sures as required by this chapter.
compromise the requirements for cross connection or protec- 602.3.3 Water quality. Water from an individual water
tion of the potable water supply system required by this code. supply shall be approved as potable by the authority hav-
601.3 Existing piping used for grounding. Existing metallic ing jurisdiction prior to connection to the plumbing sys-
water service piping used for electrical grounding shall not be tem.
replaced with nonmetallic pipe or tubing until other approved 602.3.4 Disinfection of system. After construction, the
means of grounding is provided. individual water supply system shall be purged of deleteri-
601.4 Tests. The potable water distribution system shall be ous matter and disinfected in accordance with Section 610.
tested in accordance with Section 312.5. 602.3.5 Pumps. Pumps shall be rated for the transport of
601.5 Rehabilitation of piping systems. Where pressure potable water. Pumps in an individual water supply system
piping systems are rehabilitated using an epoxy lining sys- shall be constructed and installed so as to prevent contam-
tem, such lining system shall comply with ASTM F2831. ination from entering a potable water supply through the
pump units. Pumps shall be sealed to the well casing or
covered with a water-tight seal. Pumps shall be designed
SECTION 602
WATER REQUIRED to maintain a prime and installed such that ready access is
provided to the pump parts of the entire assembly for
602.1 General. Structures equipped with plumbing fixtures repairs.
and utilized for human occupancy or habitation shall be pro-
vided with a potable supply of water in the amounts and at the 602.3.5.1 Pump enclosure. The pump room or enclo-
pressures specified in this chapter. sure around a well pump shall be drained and protected
from freezing by heating or other approved means.
602.2 Potable water required. Only potable water shall be Where pumps are installed in basements, such pumps
supplied to plumbing fixtures that provide water for drinking, shall be mounted on a block or shelf not less than 18
bathing or culinary purposes, or for the processing of food, inches (457 mm) above the basement floor. Well pits
medical or pharmaceutical products. Unless otherwise pro- shall be prohibited.
vided in this code, potable water shall be supplied to all
plumbing fixtures.
SECTION 603
602.3 Individual water supply. Where a potable public
water supply is not available, individual sources of potable WATER SERVICE
water supply shall be utilized. 603.1 Size of water service pipe. The water service pipe
shall be sized to supply water to the structure in the quantities
602.3.1 Sources. Dependent on geological and soil condi-
tions and the amount of rainfall, individual water supplies and at the pressures required in this code. The water service
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are of the following types: drilled well, driven well, dug pipe shall be not less than / inch (19.1 mm) in diameter.
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well, bored well, spring, stream or cistern. Surface bodies 603.2 Separation of water service and building sewer.
of water and land cisterns shall not be sources of individ- Where water service piping is located in the same trench with
2018 INTERNATIONAL PLUMBING CODE ® 41
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