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Plumbing Inspection Checklist

Room-by-room plumbing inspection checklist covering water supply, drainage, hot water, sanitaryware, leaks and pressure for a full property survey. Free PDF download.

What is it?

A plumbing inspection checklist is a working survey document used by a plumber to record the condition of every part of a property's plumbing system. It is organised system by system and room by room: cold and hot water supply, drainage and waste, water heating, sanitaryware, visible leaks, water pressure and stop valves. So that each item is checked and rated consistently. It is a condition record, not a certificate of compliance: it captures the state of the installation on the day of inspection and flags defects, risks and recommended remedial work.

About this template

A plumbing inspection checklist gives a plumber a structured, repeatable way to survey the whole of a property's plumbing rather than just the fault they were called out for. Working through supply pipework, drainage, hot water provision, sanitaryware, water pressure and isolation valves in a fixed order means nothing is missed and the customer gets a clear written record of the condition of their system. It is invaluable for pre-purchase surveys, void property checks, landlord handovers and quoting larger jobs, and it protects the plumber by documenting exactly what was, and was not, inspected.

When to use

  • Before buying or selling a property, to assess the condition of the plumbing as part of a survey
  • When taking on a void or newly acquired rental property and a baseline condition record is needed
  • Before quoting for a bathroom, kitchen or larger refurbishment so the full system condition informs the price
  • When a landlord or managing agent wants a periodic check of the plumbing between tenancies
  • After a leak, burst or water damage incident to assess the wider system and identify other weak points
  • When a customer reports recurring problems such as low pressure, slow drainage or noisy pipework

Tips

  1. 1Always locate and test the internal stop tap first. A seized stop tap is a common, serious finding and the customer needs to know how to isolate the supply in an emergency
  2. 2Note any lead supply pipe or lead-jointed pipework clearly and recommend replacement; lead pipework is a health concern and water suppliers often part-fund replacement of the external section
  3. 3Check that isolation valves are fitted and actually turn. Valves that are present but seized give a false sense of security and slow down future repairs
  4. 4Photograph leaks, corrosion and poor previous workmanship as you go; dated photos alongside the checklist make your report credible and protect you in any dispute
  5. 5Confirm fittings on the supply side are WRAS-approved and that adequate backflow protection is in place. Non-compliant fittings are a Water Fittings Regulations 1999 issue the customer should be told about

Frequently asked questions

What does a plumbing inspection cover?

A full plumbing inspection covers the incoming water supply and stop taps, cold and hot water distribution pipework, the hot water system (combi boiler or cylinder), drainage and waste runs, all sanitaryware such as taps, basins, baths, showers and WCs, water pressure and flow, and isolation valves. The plumber also checks for visible leaks, corrosion, damp and previous poor workmanship, and records any lead pipework, which is a health concern.

Is a plumbing inspection a legal requirement?

There is no single legal requirement for a periodic plumbing inspection in the way that landlords must arrange electrical and gas safety checks. However, plumbing work must comply with the Water Supply (Water Fittings) Regulations 1999, and water fittings should be WRAS-approved. Landlords also have a general duty to keep installations for water in good repair. A documented inspection is the practical way to show that duty is being met.

How often should a property's plumbing be inspected?

For an owner-occupied home, a plumbing inspection every five to ten years is a sensible benchmark, or sooner for older properties or after a leak. For rental properties, an inspection between tenancies and as part of regular maintenance visits is good practice. Properties with lead pipework, low water pressure, or a history of leaks should be checked more frequently so problems are caught before they cause damage.

Why does lead pipework matter in a plumbing inspection?

Lead supply pipes and lead-jointed pipework can allow lead to enter drinking water, which is a health risk, particularly for young children and pregnant women. Lead pipes were common in properties built before 1970. If an inspection finds lead pipework, the recommendation is to replace it. The homeowner usually owns the supply pipe from the property boundary, and many water companies offer help or part-funding to replace the external section.

What are WRAS-approved fittings and why do they matter?

WRAS (Water Regulations Approval Scheme) approval shows that a fitting meets the requirements of the Water Supply (Water Fittings) Regulations 1999 and will not contaminate the water supply or waste water. Using WRAS-approved fittings is the simplest way for a plumber to demonstrate compliance. An inspection should note any non-approved fittings or cross-connections that could allow backflow into the mains supply, as these are a regulatory issue.

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