Perth Sewer Connection Bylaw Applications for Builders

Utilities and Infrastructure Western Australia 4 Minutes Read · published February 11, 2026 Flag of Western Australia

Introduction

In Perth, Western Australia, builders must coordinate approvals for new or altered sewer connections with the responsible utility and comply with local planning and plumbing requirements. This guide explains who enforces connection rules, the typical application process, what forms or fees may apply, inspection and compliance expectations, and practical steps for builders and developers working within the Perth municipal area.

Who is responsible

The primary authority for sewer mains and connections in the Perth metropolitan area is the state utility, Water Corporation. Local government (City of Perth or other metropolitan councils) enforces planning, development approvals and on-site drainage standards; licensed plumbers and plumbing contractors must follow state plumbing regulations administered by the Building Commission. For utility connection applications submit requests through the Water Corporation developer and connections service pages Water Corporation - Sewer connections[1] and consult plumbing licensing and standards with the Building Commission Building Commission - Plumbing[2].

Preparing your application

  • Ensure a licensed plumber or hydraulic designer prepares plans and specification for the proposed connection.
  • Check development approvals or building permits required by the local council before requesting a connection.
  • Gather site plans, lot details, and any engineering reports detailing grades and drainage.
  • Confirm applicable fees and developer charges with Water Corporation and the local council; fees vary by project and location.
Always engage a licensed plumber early to avoid delays with both council and the utility.

Application steps and timelines

  1. Request a sewer connection assessment from Water Corporation using their connections portal or developer services; include plans and site information.
  2. Obtain any required development approval or building permit from the City of Perth or relevant local government.
  3. Arrange licensed plumbing contractor to perform connection works once approval and Water Corporation agreement are in place.
  4. Book inspections with Water Corporation or the local authority as required and obtain final compliance sign-off.

Penalties & Enforcement

Enforcement is shared: Water Corporation enforces unauthorised works to its mains and connections, while local councils and the Building Commission enforce plumbing, building and development controls. Specific penalty amounts and scales for unauthorised sewer connections or breaches are not consistently listed on the cited utility and regulator pages; where amounts are not published the entry below notes that fact and cites the source.

  • Monetary fines: not specified on the cited page for Water Corporation enforcement; local council fines for illegal works or development offences vary by council and are not specified on the cited pages cited here.[1]
  • Escalation: first, repeat and continuing offences may attract higher penalties or court proceedings; specific tiered amounts are not specified on the cited pages.
  • Non-monetary sanctions: stop-work orders, restoration orders, disconnection of unauthorised connections, and prosecution through state courts are possible where unauthorised works occur.
  • Enforcers and complaints: Water Corporation handles mains and connection integrity; the Building Commission oversees plumbing standards and licensing; local council enforces planning and on-site drainage—contact details are in Help and Support / Resources below.[1]
  • Appeals and review: appeal or review routes depend on the instrument used (utility decision, council notice or regulator ruling); specific statutory time limits for appeals are not provided on the cited pages and should be confirmed with the issuing body.
If you are issued a stop-work or compliance notice act quickly and seek review options with the issuing authority.

Applications & Forms

  • Water Corporation sewer connection application: apply via the Water Corporation connections or developer services pages; the specific downloadable form name and fee schedule are not specified on the cited page.[1]
  • Plumbing permits and licensed trades: plumbing works must be carried out or supervised by licensed plumbers and comply with state plumbing rules administered by the Building Commission; the Building Commission page describes regulatory responsibilities but does not publish a single universal permit form on that landing page.[2]
Confirm fee quotes and application workflows directly with Water Corporation before tendering to contractors.

Common violations

  • Connecting to the sewer main without Water Corporation approval.
  • Using unlicensed plumbers for connection work or failing to obtain required building permits.
  • Failing inspections or not restoring work after a compliance notice.

Action steps for builders

  • Engage a licensed plumber/hydraulic designer and obtain any required council approvals before applying to Water Corporation.
  • Submit a sewer connection request to Water Corporation with accurate site plans and developer details.[1]
  • Book required inspections and keep records of approvals and certificates of compliance.
  • Pay applicable connection charges and council fees as invoiced; obtain written confirmation of final connection approval.

FAQ

Who approves a new sewer connection in Perth?
Water Corporation approves mains and public sewer connections; local councils approve development permits and building works affecting drainage.
Do I need a licensed plumber to connect to the sewer?
Yes, plumbing and drainage work must be performed or supervised by a licensed plumber under Western Australian plumbing rules.
Where do I find the application form and fee schedule?
Apply via Water Corporation's connections pages; the specific form name and fee details should be confirmed on their site or by contacting the utility directly, as the cited landing page does not publish a single universal form name or fee table.[1]

How-To

  1. Confirm the property is within the Water Corporation service area and identify the local council.
  2. Obtain any required development or building approvals from the local council.
  3. Engage a licensed plumber and prepare connection plans and documentation.
  4. Submit a sewer connection request to Water Corporation and pay any requested fees.
  5. Complete works under inspection, obtain final compliance certificates and secure written approval for the connection.

Key Takeaways

  • Water Corporation manages mains and formal connections; councils manage on-site approvals.
  • Licensed plumbers and proper permits are essential to avoid enforcement action.

Help and Support / Resources

  1. [1] Water Corporation - Sewer connections
  2. [2] Building Commission - Plumbing

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