Adopts With Amendments
Chapter 6
Water Supply and Distribution
International Plumbing Code 2021
[F] 601 General Water Supply
Section 601 — General Water Supply. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 601.1 Water Supply and Distribution - Scope
Section 601.1 — Water Supply and Distribution - Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 601.1.1 Water Supply System General
Section 601.1.1 — Water Supply System General. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 601.2 Water Supply Connection
Section 601.2 — Water Supply Connection. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 601.2.1 Water Supply and Distribution Scope
Section 601.2.1 — Water Supply and Distribution Scope. This section establishes the scope, applicability, and administrative provisions for enforcement of this code. Refer to the official code text for complete requirements.
[F] 601.3 Water Supply General
Section 601.3 — Water Supply General. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 602 Water Required
Section 602 — Water Required. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 602.1 Water Supply Sources
Section 602.1 — Water Supply Sources. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 602.1.1 Water Service Sizing
Section 602.1.1 — Water Service Sizing. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 602.2 Potable Water Required
Section 602.2 — Potable Water Required. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 602.2.1 Minimum Pressure
Section 602.2.1 — Minimum Pressure. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 602.3 Maximum Pressure
Section 602.3 — Maximum Pressure. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 602.3.1 Pressure-Reducing Valve
Section 602.3.1 — Pressure-Reducing Valve. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 602.4 Copper Joints
Section 602.4 — Copper Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 603.1 Water Service Pipe Size
Section 603.1 — Water Service Pipe Size. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 603.1.1 Cross-Connection Control
Section 603.1.1 — Cross-Connection Control. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 603.2 Cross-Connection Control
Section 603.2 — Cross-Connection Control. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 603.3 Water Service Shutoff Valve
Section 603.3 — Water Service Shutoff Valve. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 603.4 Copper Pipe Joints
Section 603.4 — Copper Pipe Joints. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 603.5 PVC Plastic Joints
Section 603.5 — PVC Plastic Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604 Design of Building Water Distribution
Section 604 — Design of Building Water Distribution. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 604.1 Water Distribution Pipe Design
Section 604.1 — Water Distribution Pipe Design. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 604.1.1 Backflow Prevention
Section 604.1.1 — Backflow Prevention. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604.1.2 Velocity Limitation
Section 604.1.2 — Velocity Limitation. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604.10 Pressure Reducing Valve
Section 604.10 — Pressure Reducing Valve. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604.2 System Interconnection
Section 604.2 — System Interconnection. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604.2.1 Minimum Flow Requirements
Section 604.2.1 — Minimum Flow Requirements. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604.3 Water Distribution System Design Criteria
Section 604.3 — Water Distribution System Design Criteria. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 604.3.1 Flow Rates - Residential Fixtures
Section 604.3.1 — Flow Rates - Residential Fixtures. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604.4 Maximum Flow Rates
Section 604.4 — Maximum Flow Rates. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604.4.1 Maximum Flow Rates for Plumbing Fixtures
Section 604.4.1 — Maximum Flow Rates for Plumbing Fixtures. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 604.5 Water Hammer
Section 604.5 — Water Hammer. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 604.5.1 Water Supply - Pipe Sizing Table
Section 604.5.1 — Water Supply - Pipe Sizing Table. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 604.6 Water Velocity
Section 604.6 — Water Velocity. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 604.7 Minimum Required Pressure
Section 604.7 — Minimum Required Pressure. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 604.8 Maximum water pressure
Section 604.8 — Maximum water pressure. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 604.9 Pressure Booster
Section 604.9 — Pressure Booster. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 605 Materials for Water Supply
Section 605 — Materials for Water Supply. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 605.1 Water Supply Pipe Materials
Section 605.1 — Water Supply Pipe Materials. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 605.1.1 Water Supply Pipe Materials
Section 605.1.1 — Water Supply Pipe Materials. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 605.10 Copper Tube Joints
Section 605.10 — Copper Tube Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 605.11 CPVC Joints
Section 605.11 — CPVC Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 605.12 PEX Joints
Section 605.12 — PEX Joints. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 605.2 Lead Content
Section 605.2 — Lead Content. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 605.2.1 High Hazard
Section 605.2.1 — High Hazard. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 605.3 Copper or Copper-Alloy Pipe
Section 605.3 — Copper or Copper-Alloy Pipe. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 605.3.1 Water Distribution Pipe Sizing
Section 605.3.1 — Water Distribution Pipe Sizing. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 605.4 Lead Content
Section 605.4 — Lead Content. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 605.5 Fittings
Section 605.5 — Fittings. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 605.6 Cross-Linked Polyethylene
Section 605.6 — Cross-Linked Polyethylene. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 606 Installation of Water Supply
Section 606 — Installation of Water Supply. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 606.1 Installation Valves
Section 606.1 — Installation Valves. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 606.1.1 Water Pipe Joints
Section 606.1.1 — Water Pipe Joints. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 606.2 Water Hammer Arrestors
Section 606.2 — Water Hammer Arrestors. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 606.5 Water Distribution Water Hammer
Section 606.5 — Water Distribution Water Hammer. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 607 Hot Water Supply
Section 607 — Hot Water Supply. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 607.1 Hot Water Supply Temperature Maintenance
Section 607.1 — Hot Water Supply Temperature Maintenance. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 607.1.1 Hot Water Supply
Section 607.1.1 — Hot Water Supply. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 607.1.2 Recirculation Systems
Section 607.1.2 — Recirculation Systems. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 607.2 Hot Water Supply Temperature Maintenance
Section 607.2 — Hot Water Supply Temperature Maintenance. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 607.2.1 Hot Water Recirculation
Section 607.2.1 — Hot Water Recirculation. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 607.3 Thermal Expansion Control
Section 607.3 — Thermal Expansion Control. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] 607.4 Maximum Temperature Limitation
Section 607.4 — Maximum Temperature Limitation. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608 Protection of Potable Water Supply
Section 608 — Protection of Potable Water Supply. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 608.1 General - Backflow Protection
Section 608.1 — General - Backflow Protection. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.1.1 Backflow Prevention Requirements
Section 608.1.1 — Backflow Prevention Requirements. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.13 Backflow Protection at Fixtures
Section 608.13 — Backflow Protection at Fixtures. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.13.1 Air Gap
Section 608.13.1 — Air Gap. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.13.2 Reduced Pressure Principle Backflow Preventer
Section 608.13.2 — Reduced Pressure Principle Backflow Preventer. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.13.3 Double Check Valve Backflow Preventer
Section 608.13.3 — Double Check Valve Backflow Preventer. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.13.7 Vacuum Breaker
Section 608.13.7 — Vacuum Breaker. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.14 Backflow Protection - Fire Protection Systems
Section 608.14 — Backflow Protection - Fire Protection Systems. This section addresses fire protection and life safety requirements. Specific provisions depend on building type, occupancy, and construction classification. Refer to the official code text for complete requirements.
[F] 608.15 Backflow - Double Check Valve Assembly
Section 608.15 — Backflow - Double Check Valve Assembly. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.16 Connections to Lawn Irrigation Systems
Section 608.16 — Connections to Lawn Irrigation Systems. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.16.2 Connections to Boilers
Section 608.16.2 — Connections to Boilers. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.16.4 Connections to Fire Protection Systems
Section 608.16.4 — Connections to Fire Protection Systems. This section addresses fire protection and life safety requirements. Specific provisions depend on building type, occupancy, and construction classification. Refer to the official code text for complete requirements.
[F] 608.17 Backflow Protection - Solar Systems
Section 608.17 — Backflow Protection - Solar Systems. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.2 Backflow Protection Devices
Section 608.2 — Backflow Protection Devices. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.3 High Hazard Connections
Section 608.3 — High Hazard Connections. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.4 Low Hazard Connections
Section 608.4 — Low Hazard Connections. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.5 Backflow Preventer Testing
Section 608.5 — Backflow Preventer Testing. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 608.7 Backflow - Chemical Dispensers
Section 608.7 — Backflow - Chemical Dispensers. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
[F] 609.1 Installation of Water Distribution Pipe
Section 609.1 — Installation of Water Distribution Pipe. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 609.2 Water Supply Pipe Protection
Section 609.2 — Water Supply Pipe Protection. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 609.3 Water Pipe Insulation
Section 609.3 — Water Pipe Insulation. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 609.7 Water Pipe Joints
Section 609.7 — Water Pipe Joints. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 610.1 Water Hammer
Section 610.1 — Water Hammer. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 610.1.1 Hot Water Supply System Requirements
Section 610.1.1 — Hot Water Supply System Requirements. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 610.2 Water Pressure Booster Systems
Section 610.2 — Water Pressure Booster Systems. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 611.1 Thermal Expansion
Section 611.1 — Thermal Expansion. This section addresses energy conservation requirements including thermal performance and building envelope specifications. Refer to the official code text for complete requirements.
[F] 612.1 Solar Water Heating
Section 612.1 — Solar Water Heating. This section covers plumbing system requirements. Specific sizing, materials, and installation methods are in the official code text. Refer to the official code text for complete requirements.
[F] 613.1 Recirculation Systems
Section 613.1 — Recirculation Systems. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
Code sections are sourced from the International Code Council (ICC) and NFPA. Refer to ICC Digital Codes or NFPA for the authoritative source documents.