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Plumbing & Drainage

Water supply, sanitary plumbing, stormwater, and the Plumbing Code of Australia

15 articles

Plumbing Inspection Requirements and Compliance Certificates

What This Requirement Covers Plumbing inspection requirements and compliance certificates set out how plumbing and drainage work must be demonstrated as...

12 Apr 2026·8 min read

Sub-Surface Drainage Requirements for Building Sites

What This Requirement Covers Sub-surface (subsoil) drainage requirements cover the design, installation and maintenance of drainage systems intended to remove...

12 Apr 2026·8 min read

Water Supply Pipe Sizing for Residential Developments

What This Requirement Covers This requirement covers the sizing and installation of potable and non-potable water supply pipes serving residential developments...

12 Apr 2026·8 min read

Trap and Waste Pipe Requirements for Sanitary Fixtures

What This Requirement Covers This requirement covers the design, sizing, installation and ventilation of trap and waste pipe connections for sanitary fixtures...

12 Apr 2026·8 min read

Gas Plumbing Installation Requirements and Compliance

What This Requirement Covers Gas plumbing installation requirements set the minimum safety, performance and siting measures for supplying and installing gas...

12 Apr 2026·8 min read

Roof Plumbing and Gutter Sizing Requirements

What This Requirement Covers Roof plumbing and gutter sizing requirements set the minimum design, material and capacity standards for collecting and conveying...

12 Apr 2026·8 min read

Thermostatic Mixing Valve Requirements for Bathrooms

What This Requirement Covers This requirement covers the use of temperature control devices - principally thermostatic mixing valves (TMVs) - to limit the...

12 Apr 2026·8 min read

Septic System Requirements for Rural Properties

What This Requirement Covers On-site septic system requirements set the minimum design, installation, operation and environmental protection measures for...

12 Apr 2026·8 min read

Minimum Pipe Sizes for Residential Plumbing Systems

What This Requirement Covers This requirement covers the minimum internal diameters and related design limits for sanitary drainage, discharge, vent and waste...

12 Apr 2026·9 min read

Backflow Prevention Device Requirements

What This Requirement Covers Backflow prevention devices are mechanical or physical arrangements installed in water service pipework to prevent contaminated...

12 Apr 2026·8 min read

Greywater Treatment and Reuse System Requirements

What This Requirement Covers This requirement covers the design, installation, performance and reuse of domestic greywater treatment systems and associated...

12 Apr 2026·8 min read

Rainwater Tank Plumbing Requirements and Connection to Mains

What This Requirement Covers This requirement sets out the plumbing, backflow prevention and installation standards for rainwater storage tanks and any direct...

12 Apr 2026·8 min read

Hot Water System Installation Requirements and Safety

What This Requirement Covers This requirement covers the safe installation, commissioning and temperature control of heated water systems used for personal...

12 Apr 2026·7 min read

Sewer Connection Requirements and Minimum Fall Grades

What This Requirement Covers Sewer connection requirements and minimum fall grades set the rules for how sanitary drains and sewer pipes must be laid,...

12 Apr 2026·8 min read

Stormwater Drainage Requirements for Residential Properties

What This Requirement Covers Stormwater drainage requirements for residential properties set the minimum standards for collecting, conveying and discharging...

12 Apr 2026·8 min read