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Notification of proposed works

Helpful information for filling in the notification form for proposed plumbing works, plus an explanation of what types of work you need to notify us about.

Notification of proposed works form
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Before You Start Plumbing Work

To carry out certain plumbing work, you’ll need to notify us in advance and get our consent, as required under Water Fittings Regulation 5. This process helps ensure your work meets legal standards and protects the public water supply.

Whether you’re a plumber, builder, or property owner, understanding the steps involved will help you avoid delays and keep your project running smoothly.

If the installation involves items 2, 4(b), or 4(f) in the regulations, you don’t need to notify us if the work is carried out by an approved plumber. In these cases, the plumber must issue a Water Regulation Compliance Certificate to the person who commissioned the work.

Note: If your installation includes a Reduced Pressure Zone (RPZ) valve (also known as a BA Type Backflow Prevention Device), you must complete and submit the notification form below to gain consent.

Notifying us at the right time helps you meet legal requirements and avoid unnecessary delays or disruptions.

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When You Need to Notify Us

Some types of plumbing work require prior notification.
You’ll need our consent before starting any of the works listed below.

  • Reusing an existing water supply when constructing new buildings
  • Changes to existing water or plumbing systems
  • Extending or altering systems in non-domestic buildings (e.g. commercial or industrial)
  • A material change of use at a premises — for example:
    - Introducing alternative water sources (rainwater, boreholes, etc.)
    - Installing systems for firefighting
    - Any other use that could increase contamination risk
  • A bidet with an ascending spray or flexible hose 
  • A pump or booster drawing over 12 litres per minute
  • A unit with reverse osmosis functionality
  • A water treatment unit that:
    - Produces wastewater discharge, or
    - Requires water for cleaning or regeneration
  • An RPZ valve assembly or similar device 
  • A garden watering system, unless manually operated
  • Water pipework installed:
    - Outside or entering a building that is less than 750mm deep, above ground, or deeper than 1350mm

When submitting your notification, be ready to include: 

  • Your contact details
  • Description of the proposed works or material change of use
  • Address/location of the premises
  • The current or intended use of the premises
  • A site plan of the relevant area
  • A plumbing schematic of the relevant area
  • If applicable, the name of the approved contractor doing the work

Need a new water supply?
Please apply for the new connection separately, then submit your notification. If you’re not applying for a new supply, just complete the notification form below.

On receipt of a Notification and within 10 working days; a Regional Water Regulations Officer will check whether the Notification includes all of the above information which is necessary to Assess the Installation for Water Regulations Compliance.

Within 10 days Water Regulations Officer will respond the Notifier with one of the following:

  • Further Information is required
  • Withhold Consent
  • Grant Consent
  • Grant Consent subject to conditions 

Please Note: The Notifier must not begin work without our Consent and where Consent is given the Notifier may need to comply with certain conditions of Consent.

Please ensure the person installing or working on your water system has sufficient skills and knowledge to do the job safely and without risk to health and safety. Your installer will need to have a good understanding of the Water Fittings Regulations and dependant on complexity of your water system you may also need the support of a design engineer to help determine to ensure the water systems operational demands are met.

For simple Domestic Installations you could refer to some online such as (Watersafe, Legionella Control Assoc, etc).

For Commercial Installations you may require a higher level of technical competence, the following schemes may be more appropriate (Chartered Institute of plumbing & Heating or Building Engineers CIPHE or CIBSE, Legionella Control Assoc, etc).

Certificate of Water Regulations Compliance
Please ensure you installer provides you with a certificate of compliance for your new plumbing and send us a copy.

For all installations except those listed under 4(a), 4(c), 4(h), or 5, please provide a simple plumbing schematic. This helps us quickly assess your installation.

The schematic should ideally show the pipework, fittings, and appliances you plan to install. Additionally, please include a plan or drawing that indicates the intended location of the proposed plumbing and fittings.

Once we receive your information, we will respond in writing within 10 working days. Consent will not be unreasonably withheld but may include conditions that you must comply with.

If you do not hear from us within 10 working days, consent is considered to have been granted. However, please note that we may still need to inspect the water system to ensure it meets the required standards.

Step 1: Applicant's details

(of persons giving notice)

Step 2: Site/Location details

Location of business

Step 3: Notification details - part 1

Here you need to add a detailed description of your proposed works.

Step 4: Notification details - part 2

Here you need to add a detailed description of your proposed works.

Step 5: Plumbing details

Except for installations listed at 4(a), 4(c), 4(h) or 5 in the accompanying notes, please provide plumbing details to include pipework, fittings and appliances to be installed. A plan or drawing showing the planned position of the proposed plumbing and fittings should also be attached below.

Step 6: Checklist and declaration

Please complete the declaration to complete the form

Step 1: Applicant's details

(of persons giving notice)

Step 2: Site/Location details

Location of business

Step 3: Notification details - part 1

Here you need to add a detailed description of your proposed works.

Step 4: Notification details - part 2

Here you need to add a detailed description of your proposed works.

Step 5: Plumbing details

Except for installations listed at 4(a), 4(c), 4(h) or 5 in the accompanying notes, please provide plumbing details to include pipework, fittings and appliances to be installed. A plan or drawing showing the planned position of the proposed plumbing and fittings should also be attached below.

Step 6: Checklist and declaration

Please complete the declaration to complete the form

Notification of proposed works

(if different to above - title and initial included)

Notification of proposed works
Notification of proposed works
Notification of proposed works
Notification of proposed works

(if applicable)

Notification of proposed works
Step 1: Applicant's details

(of persons giving notice)

Step 2: Site/Location details

Location of business

Step 3: Notification details - part 1

Here you need to add a detailed description of your proposed works.

Step 4: Notification details - part 2

Here you need to add a detailed description of your proposed works.

Step 5: Plumbing details

Except for installations listed at 4(a), 4(c), 4(h) or 5 in the accompanying notes, please provide plumbing details to include pipework, fittings and appliances to be installed. A plan or drawing showing the planned position of the proposed plumbing and fittings should also be attached below.

Step 6: Checklist and declaration

Please complete the declaration to complete the form