The perfect pool for an elegant garden

A ground pool, or in-ground pool as it is also called in Swedish, represents the ultimate investment for your garden. Unlike above-ground pools that stand freely on the ground, a ground pool is integrated directly into the landscape and creates an elegant, permanent solution that enhances both functionality and property value. In the Scandinavian climate, an in-ground pool requires careful planning and the right choice of materials to ensure long-term durability and enjoyment for many summers to come.

What is a Ground Pool and why choose in-ground installation?

A ground pool is a pool that is dug fully or partially into the ground, creating a permanent and integrated part of your garden. This differs fundamentally from temporary solutions and offers both aesthetic and practical benefits.

Benefits of an in-ground pool

In-ground pools offer several unique advantages compared with other pool types. The permanent installation means greater stability and safety, especially important for families with children. By placing the pool at ground level, the need for tall ladders or platforms is eliminated, creating a more accessible and safer bathing environment.

The main benefits include:

• Increased property value by up to 10-15% in attractive areas
• Lower heating costs thanks to the ground's natural insulation
• Longer lifespan, often 25-40 years with proper installation
• Unlimited design possibilities with different shapes and sizes
• Greater flexibility for additional equipment

The Scandinavian climate places special demands on a ground pool. Sub-zero temperatures, frost heave and seasonal variation mean the pool must be built with materials and methods that can withstand these stresses. can give you further insight into the factors that affect the choice of pool type.

Materials and construction for your in-ground pool

The choice of material is crucial for your ground pool's performance and lifespan. Three main material categories dominate the market, each with its own specific properties and advantages.

Concrete pools – Maximum customisation

Concrete pools offer unlimited freedom when it comes to shape and size. The structure is built on site with reinforced concrete and then lined with tile, liner or plaster. For Swedish conditions, concrete pools require extra reinforcement to withstand frost movement.

Fibreglass pools – Fast installation

Fibreglass pools are delivered as pre-made shells that are lowered into a prepared hole. This means faster installation and a smooth, non-porous surface that minimises algae growth. The material is durable and requires minimal maintenance, making it a popular choice for Swedish pool owners.

PP pools – Premium quality

Polypropylene pools represent the most modern technology for ground pool construction. Exclusive PP pools combine insulating properties with exceptional durability. The material is not only strong but also flexible enough to handle ground movement without cracking.

PP pools offer superior energy efficiency thanks to their insulating properties. This is particularly valuable in the Swedish climate, where water heating is a significant ongoing cost. Many choose to complement their pool with solar collectors for additional cost savings.

Planning and installation of a ground pool

Installing a ground pool requires careful planning and professional expertise. The process involves several critical steps that must be carried out correctly to ensure long-term success.

Preparatory work

Before excavation begins, several factors must be investigated. Ground conditions, groundwater level and access to electricity and water all affect the installation process. can help you navigate the initial phases.

Important preparations:

1. Ground survey to assess soil type and stability
2. Application for building permit (required for permanent pools over 15 m²)
3. Planning of drainage and water runoff
4. Electrical installation in accordance with applicable electrical safety regulations
5. Determining the optimal location based on sun exposure

The excavation work is a significant part of the project. A hole larger than the pool itself must be dug to allow space for backfill material and drainage systems. Frost protection is critical in Swedish conditions – the pool must be installed below the frost line or with compensation for the effects of frost.

Installation process step by step

Installation of a ground pool follows a structured process where each step builds on the previous one. Timing is crucial, especially in northern climates where the construction period is limited by weather and ground frost.

For prefabricated pools such as fibreglass or PP pools, the shell is lowered in by crane after the foundation has been prepared. Building a pool requires expertise in several areas – from groundworks to plumbing and electricity.

Backfilling, the process of filling the space around the pool, is carried out at the same time as the pool is filled with water. This ensures the pressure is balanced and prevents deformation of the pool shell. Usually gravel or crushed stone is used, which allows drainage but provides sufficient support.

Technical systems and equipment

A modern ground pool requires several integrated systems to function optimally. These components work together to ensure clean, warm and safe water throughout the season.

Filtration and water quality

The filtration system is the heart of the pool. For in-ground pools there are three main types of filters: sand filters, cartridge filters and DE filters. Sand filters are the most popular thanks to their robustness and low operating cost, while cartridge filters offer finer filtration with lower water consumption.

The circulation pump is sized according to the pool's volume. As a rule of thumb, the entire water volume should circulate at least once per day, ideally twice during the high season. For a typical 40 m³ ground pool, this means a pump with a capacity of at least 8-10 m³/hour.

Heating solutions

In the Scandinavian climate, heating is essential to extend the swimming season. Several options are available, each with its specific advantages:

Heat pumps have become the standard for ground pool heating thanks to their energy efficiency. With a COP (Coefficient of Performance) of 5-6, they produce 5-6 kW of heat for every kW of electricity consumed. This makes them particularly economical for larger pools.

Automation and smart solutions

Modern ground pool installations benefit from automation to simplify operation and maintenance. Automatic dosing systems continuously monitor and adjust pH and chlorine levels, ensuring optimal water quality with minimal effort.

Smart control via app allows monitoring and control of all pool systems from your smartphone. Temperature can be adjusted, filtration cycles programmed and water quality verified wherever you are. This is particularly valuable for holiday properties where regular physical presence is not always possible.

Design and integration in the garden

A ground pool should not only function technically but also harmonise aesthetically with its surroundings. Thoughtful design and landscape integration create a whole that enhances the character of the entire property.

Shape and size selection

Traditional rectangular pools remain popular thanks to their timeless elegance and efficient swimming space. Alternative shapes such as kidney-shaped, L-shaped or free-form pools may, however, better suit irregular plots or specific design visions.

Popular pool sizes for Swedish conditions:

• 3x6 meter – Optimal for small gardens and cooling off
• 4x8 meter – Family pools with space for both play and exercise
• 5x10 meter – Larger pools for swim training and entertainment
• Custom sizes – Tailored to the conditions of the plot

Depth varies depending on use. A uniform bottom depth of 1,2-1,4 meter works well for families with children, while swimmers often prefer a depth of 1,5-1,8 meter. can help you visualise different options.

Surrounding structures

The deck around your ground pool serves both practical and aesthetic functions. Materials such as wood, composite, stone or tiles offer different properties in terms of durability, maintenance and appearance. Pool deck-solutions should be chosen with regard to the effects of climate – freezing and thawing place demands on the material's frost resistance.

Pool enclosures have become increasingly popular in Sweden, for both practical and financial reasons. A pool enclosure significantly extends the swimming season, reduces heat loss by up to 70%, and minimises falling leaves and dirt. Modern pool enclosures are available in variants ranging from low slatted covers to high enclosures that allow full standing height.

Maintenance and care of an in-ground pool

A well-maintained ground pool can provide decades of enjoyment. Regular maintenance prevents problems and ensures the investment is preserved over time.

Daily and weekly care

Water chemistry requires continuous attention. The pH value should be between 7,2-7,6 for optimal comfort and effective disinfection. Chlorine levels are ideally kept between 1-3 ppm (parts per million). Testing should be done at least 2-3 times per week during the high season.

Weekly pool care routine:

1. Test and adjust pH level
2. Check and adjust chlorine level
3. Clean skimmers and filter basket
4. Brush the pool walls to prevent algae growth
5. Sweep or vacuum the pool floor
6. Check filter pressure and backwash as needed
7. Inspect visible technical components

The filter requires backwashing when the pressure rises 0,5-0,8 bar above the normal level. This indicates that the filter medium is saturated with dirt and needs cleaning. Frequency varies depending on pool usage and the surrounding environment.

Seasonal maintenance

Winter covering is critical in the Swedish climate. The process begins when the water temperature drops below 15°C, usually in September or October. The water level is lowered below the nozzles and skimmers, pipes are drained of water, and antifreeze is added where necessary.

A high-quality winter cover protects against debris and greatly facilitates spring opening. The cover should be strong enough to bear snow loads and any ice without being damaged or sinking into the water.

Spring opening requires the reverse process. After the cover is removed, the pool is thoroughly cleaned, systems are filled and tested, and the water is chemically balanced. Pool service can be valuable both for seasonal opening and closing as well as for regular maintenance.

Economy and valuation

A ground pool represents a significant investment that affects both initial cost and ongoing expenses. Understanding the full financial picture is crucial for well-informed decision-making.

Investment costs

The total cost of a ground pool varies greatly depending on type, size and options. The cost to build a pool includes several components beyond the pool structure itself.

Cost categories for a complete ground pool:

• Pool structure (materials and installation): 150 000-500 000 kr
• Ground preparation and excavation: 30 000-80 000 kr
• Technical equipment (filter, pump, heating): 50 000-150 000 kr
• Deck and surrounding structures: 50 000-200 000 kr
• Pool enclosure or cover: 40,000-150,000 SEK
• Accessories and additions: 20 000-50 000 kr

Turnkey contracting often offers better value than coordinating different contractors yourself. An experienced pool supplier has established processes and can optimise both cost and quality throughout the project.

Ongoing operating costs

Annual operating costs for a ground pool vary depending on pool size, heating method and intensity of use. A typical 40 m³ pool in central Sweden can be expected to cost 15 000-30 000 kr per year to operate.

Main ongoing costs:

• Electricity for filtration and heating: 8 000-18 000 kr/year
• Chemicals (chlorine, pH adjustment, algaecide): 2 000-4 000 kr/year
• Water for topping up: 500-1 500 kr/year
• Service and maintenance: 2 000-5 000 kr/year
• Insurance and any property tax: 2 000-4 000 kr/year

Energy-efficient solutions such as heat pumps, and well-insulated structures can significantly reduce operating costs. A heat pump can reduce heating costs by 60-70% compared with traditional electric heating.

Regional adaptation and climate considerations

Sweden's geographical spread means varying climates that affect how a ground pool should be designed and maintained. From the mild climate of southern Sweden to the challenges of northern regions, each area requires specific consideration.

Pools in different climate zones

In southern Sweden, from Skåne to Småland, the milder climate allows for a longer swimming season and lower heating costs. Pool in Malmö-installations can often be used from May to September without extensive heating, while pool in Stockholm and central Sweden require greater heating capacity.

Northern Sweden places special demands on frost insulation and material choice. Frost depth can reach 1,5-2 meter in Piteå and similar northern areas, which requires deeper excavation or specialised construction methods.

Material choice for Scandinavian climate

PP pools and high-quality fibreglass pools perform best in the Scandinavian climate. These materials handle temperature fluctuations and frost effects without cracking or structural problems. show clear differences in long-term durability.

Traditional concrete pools can work excellently but require professional installation with proper reinforcement and frost protection. Errors in construction can lead to costly repairs when frost moves the ground around the pool.

Safety and compliance

Safety around a ground pool is not only a moral obligation but also a legal matter. Swedish regulations require specific safety measures for permanent pools.

Legal requirements and safety regulations

Pools with over 15 m² of water surface require a building permit in most municipalities. The application must include drawings, technical specifications and placement on the plot. Some municipalities also have requirements for minimum distance to the plot boundary.

Enclosure is mandatory for pools deeper than 50 cm when children under five years of age are present in the household or on neighboring properties. The fence must be at least 1.1 meters high with a self-closing and self-latching gate. Alternatively, a pool enclosure or full-coverage safety net may be used.

Basic safety equipment:

• Life buoy and rescue pole in immediate proximity
• First aid kit clearly placed
• Clear depth markings along the pool edge
• Non-slip surface around the pool
• Lighting for evening and night swimming
• Phone available for emergencies

Electrical installations must be carried out by a certified electrician in accordance with applicable regulations. Residual current devices are mandatory and all equipment near the pool must be rated for humid environments. The safety distance between electrical outlets and the pool edge is a minimum of 2,5 meter.

Child-friendly considerations

For families with children, a ground pool offers both opportunities and responsibility. A shallow bottom of 1,0-1,2 meter depth is best suited for younger children, while a gradual increase in depth towards one end provides flexibility as children grow.

Stairs or wide steps make entry and exit considerably easier for children. Integrated steps in the pool shell are safer than loose ladders and eliminate the risk of children climbing in when the pool is unattended.

Swimming lessons are the most important safety measure. All children should learn to swim as early as possible, preferably before the pool is installed. Even with children who can swim, however, the basic rule applies: never leave children unsupervised by an adult at the pool.

A ground pool is a significant investment that provides decades of summer enjoyment and increases your property's value and appeal. With the right choice of material, professional installation and regular maintenance, your in-ground pool becomes a lasting asset. For those seeking reliable expertise and high-quality pool solutions adapted to the Scandinavian climate, Pooltime® offers turnkey contracting with over 20 years of experience, from initial planning and visualisation to completed installation and follow-up service.