A swim spa specification is easy to write and easy to get wrong. A few missing lines on a datasheet can turn into a crane schedule that does not fit a site, an electrical supply that cannot carry the load, or a delivered shell that does not match the design intent. If you are sourcing the Outdoor Swim Spa WS-S07M for a villa garden, a resort terrace or an athlete recovery area, the specification you prepare is the single most important document in the project. This guide walks through the blocks you should fill in, in the order the SANTERSON project team needs to read them.

1. Fix the model and the envelope before anything else

The WS-S07M is a 7-metre swim and hydrotherapy shell, listed at 7000 × 2200 × 1480 mm in the SANTERSON catalogue. Treat those three numbers as the design envelope, not as the finished installation size. Your specification should show the shell dimensions, then add the working space your site needs for access, plant, and maintenance clearance. On ground-floor gardens this is often straightforward; on rooftops and terraces the same shell may need a different delivery route, so state the access condition in writing at this stage.

The range is also built in other lengths, from compact four-metre units to longer shells around thirteen metres, and several models carry a "-U" suffix in the catalogue name. If your architect has already drawn a recess, write the exact clear opening and ask us to confirm which model that opening actually suits. That single check prevents the most common rework on swim spa projects.

2. Specify the water side, not just the shell

The standard configuration of the WS-S07M carries 40 jets, three water pumps and one filter pump, with a single control system, LED lights and a total connected power of 10.75 kW. These numbers belong in your document, but they should be written as a starting configuration rather than a fixed promise. Pump counts and jet layouts change between options, so the line in your specification should read: "standard configuration to be confirmed against the quotation, option list attached."

The specification should then list the water features you intend to use, because each one has a different demand on the plant room. A waterfall, water columns, ozone sanitation and LED lighting all appear in the listed features for this model, yet a hotel project that plans heavy guest use will care more about sanitation than about ambience. Where hygiene is the driver, add UV sterilization to the option list, and state clearly whether it must be included at handover or added later.

3. Put the power supply in the client's scope, not in a footnote

A 10.75 kW swim spa cannot run from a standard outdoor socket, and the electrical work is almost always local. In your specification, give the main contractor a dedicated line item that states the total connected load, the supply the site will provide, and who is responsible for the isolator, the run and the protection device. If your site has three-phase power available, say so; if it does not, say that too and let us size the configuration around what the site actually has. Recording this in the specification, rather than discovering it on site, is the difference between a planned cable route and a surface trunking compromise.

4. List options by function, not by catalogue code

Optional items for the WS-S07M family include control systems, UV sterilization, additional water pumps, heat pumps, sand filtration, insulation and steps. Rather than copying that list into your document, group the options by the decision they support:

• Running cost and climate: heat pump and insulation, with your target water temperature written down.
• Water quality regime: ozone listed as a standard feature, with UV sterilization and sand filtration as options where the operator wants a defined sanitation path.
• Access and usability: steps, plus handrail or deck-edge details where the users include children or older guests.
• Control and operation: control system quantity, and who operates the spa day to day.

Compatibility varies between models and configurations, so the specification should record each option as required, optional or excluded, and require our final confirmation against the quotation before order.

5. Describe the use case, because it changes the specification

The same shell serves very different jobs. A private owner who swims laps each morning needs a layout that supports continuous swimming and a heat pump sized for daily use. A boutique hotel needs sanitation, defined maintenance access, and a control system that staff can operate without a specialist. A physiotherapy or training programme needs jet positions and water features that support the treatment routine rather than the visual effect. Write the use case in one short paragraph at the top of the specification, and name the daily user count and hours. That paragraph is what lets us recommend a configuration instead of guessing.

If none of the standard lengths fits the space, the range includes spas that can be specified in custom shapes and sizes for the site, so an awkward terrace or a curved garden edge does not have to force a compromise on either side.

6. Set the delivery and installation sequence

A 7-metre shell arrives as a large single component, so the specification should state the delivery address condition, the crane or lifting requirement, and the date window the site can accept. Then state the sequence: base preparation, position and level, electrical connection, plant commissioning, fill, handover. Naming the responsible party for each stage in the document prevents the gap where everyone assumes the other trade handled it. Our project team works with clients from production through to site guidance, so we can review this sequence with your contractor before manufacture starts.

A specification checklist you can copy into your document

Values above are the catalogue figures for this model, before configuration confirmation. Confirm the final equipment list and electrical requirement against the quotation for your build.

Send us the draft early

The most useful thing you can do with a swim spa specification is send it before the design is frozen. As a manufacturer of furniture and building materials working on villa and hospitality projects, we see the swim spa as one element in a wider outdoor scheme that also involves decking, loungers, shading and lighting. When the specification reaches us at concept stage, we can flag conflicts with the same information we use to coordinate the rest of the order, instead of raising them after manufacture is booked.

If you are preparing the WS-S07M specification now, send us the model, the room or site dimensions, your intended use, and the options you think you need. We will return a confirmed configuration sheet with the equipment list and the electrical requirement for that exact build, which you can attach to your tender documents.