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Commercial Plumbing

Commercial Water Supply Installation

Commercial water supply installation provides a safe, reliable water feed to offices, retail units and other commercial premises. Whether you are fitting out a new unit or upgrading an existing supply, the work is planned to meet Water Regulations, support consistent pressure, and keep disruption to day to day operations to a minimum.

More information

What commercial water supply installation covers

A correctly installed water supply protects your premises, supports consistent flow, and helps you stay compliant. Installation can be designed around your unit layout, usage, and any landlord or building management requirements.

Typical scope includes:

  • Site survey and assessment of existing incoming supply and pipe routes.
  • Sizing of pipework to match expected demand and reduce pressure drop.
  • New or replacement cold water distribution pipework within the unit.
  • Installation of stop taps and isolation valves for safe shut off and maintenance.
  • Backflow prevention where required under the Water Supply (Water Fittings) Regulations.
  • Connections to washrooms, tea points, cleaners sinks and equipment feeds.
  • Pressure testing, flushing, and commissioning before handover.
  • Clear handover notes on valve locations and what has been installed.

When this service is most useful

This service is a good fit if you are:

  • Fitting out a new commercial unit or refurbishing an existing space.
  • Adding new facilities such as extra WCs, a kitchenette, or additional sinks.
  • Splitting a unit, changing layout, or creating separate areas that need their own isolation.
  • Experiencing low flow, inconsistent pressure, or pipework that is no longer fit for purpose.
  • Working to meet compliance requirements for commercial water installations.

How the work is delivered

Work usually starts with a survey to confirm the incoming supply, access points, and the most practical routes for new pipework. You will receive a clear scope of work and an agreed plan for access, water shut offs, and timings.

Installation is then carried out with an emphasis on tidy routing, appropriate fittings, and sensible valve placement. Once complete, the system is tested and commissioned so you can use the supply with confidence.

After installation

You will be shown the location of key isolation points and advised on safe shut down steps in case of an issue. If your site needs ongoing support, follow up visits can be arranged for adjustments, additions, or planned checks as your premises changes.

Frequently Asked Questions

Do you install water supplies in occupied commercial units?
Yes, installation can be planned around trading hours and access restrictions. Where a shut off is needed, it is scheduled and kept as short as possible.
Can you connect a unit to the mains water supply?
If a new or altered mains connection is required, it may need approval and work by the water supplier. We can advise on what is needed and coordinate the plumbing works on your side of the boundary.
Will the installation meet Water Regulations requirements?
Yes, the pipework, fittings and backflow protection are selected and installed with the Water Supply (Water Fittings) Regulations in mind. If any specific site requirements apply, these are confirmed before work starts.
How long does a commercial water supply installation take?
Timescales depend on the unit size, the number of outlets, and access to routes and risers. After a survey, you will get an agreed programme so you can plan around any temporary shut offs.
What if water pressure or flow is poor in the building?
We will assess the existing supply and discuss options before installation. This may include resizing pipework, improving routing, or specifying pressure management solutions where appropriate.

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