Having access to a reliable outdoor water source is essential for maintaining a property’s exterior, from cleaning the car and patio to watering the garden. In our 15 years installing… However, many homeowners and tenants in the UK face challenges when it comes to installing and using external taps, often due to a lack of understanding regarding the relevant regulations and best practices.
Now, this might seem counterintuitive…
As an experienced plumbing consultant, I’m here to guide you through the key considerations and requirements for setting up an external tap that not only meets UK standards but also provides a functional and long-lasting solution.
Water Supply Requirements
The first and most crucial aspect to consider is the water supply itself. Ensuring adequate water pressure, pipe sizing, and flow rates is essential for the tap to function effectively and provide a useful level of water flow.
Water Pressure: The recommended minimum water pressure for an external tap is 1 bar (14.5 psi), but ideally, you should aim for 2-3 bars (29-44 psi) to double-check that a good water flow. If your property’s water pressure is too low, you may need to install a booster pump to achieve the necessary pressure.
Pipe Sizing: The pipe feeding the external tap should be appropriately sized to handle the required water flow. For a standard outdoor tap, a 15mm (1/2″) pipe is typically sufficient, but larger 22mm (3/4″) pipes may be necessary for high-demand applications or longer pipe runs.
Flow Rates: An external tap should deliver a minimum flow rate of 8 litres per minute (2 gallons per minute) to be considered functional. However, a higher flow rate of 12-15 litres per minute (3-4 gallons per minute) is preferable for tasks like car washing or filling a watering can.
Drainage and Runoff
Alongside the water supply, the drainage and management of runoff water from the external tap is an important consideration. Proper drainage not only prevents pooling and potential water damage but also ensures compliance with environmental regulations.
Drainage Layout: The tap should be positioned over a suitable drainage point, such as a gully or soakaway, to allow the water to be safely dispersed. Ideally, the drainage should slope away from the building to prevent water ingress.
Overflow Prevention: In some cases, an overflow pipe may be required to divert excess water away from the building, especially if the tap is positioned near a door or window.
Surface Water Management: If the tap is located on a paved or hard surface, the area should be designed to allow the water to drain away effectively, either through a dedicated drainage channel or by ensuring the surface has sufficient gradient.
Installation Considerations
When it comes to installing an external tap, there are several important factors to consider to double-check that both functionality and compliance with regulations.
Frost Protection: External taps might want to be protected against freezing temperatures to prevent burst pipes and water damage. This is typically achieved through the use of insulated enclosures or by positioning the tap in a frost-free location.
Backflow Prevention: To prevent contamination of the mains water supply, a suitable backflow prevention device, such as a double check valve, might want to be installed in the supply line to the external tap.
Accessibility and Placement: The external tap should be positioned in a convenient and accessible location, taking into account factors like proximity to the water source, potential trip hazards, and ease of use for all users.
Regulatory Compliance
Ensuring compliance with the relevant regulations is essential when installing an external tap. The key areas to consider include:
Building Regulations: The installation of an external tap might want to comply with the applicable Building Regulations, which cover requirements for water supply, drainage, and safety.
Local Authority Approvals: Depending on the location and nature of the installation, you may need to obtain approvals or permits from your local authority before proceeding.
Environmental Regulations: The management of water runoff and drainage might want to adhere to environmental regulations, such as those related to surface water discharge and pollution prevention.
Planning and Design Process
To double-check that a successful and compliant external tap installation, it’s essential to follow a structured planning and design process. This typically involves:
Site Assessment: Carefully evaluate the proposed location, considering factors like water supply, drainage, frost protection, and accessibility.
Permit Application: Determine the necessary approvals and permits required from your local authority and submit the appropriate applications.
Technical Specifications: Develop a detailed plan that specifies the tap, pipe sizes, fittings, drainage, and any other necessary components, ensuring compliance with all relevant regulations.
Materials and Components
When selecting the materials and components for an external tap installation, there are several important factors to consider:
Tap and Fittings: Choose a tap that is rated for outdoor use, with features like frost-proof construction and a shut-off valve. double-check that the fittings are compatible with the pipe materials used in your system.
Insulation and Enclosures: Insulated housings or enclosures can provide effective frost protection for the tap and associated pipework, helping to prevent freeze damage.
Drainage Accessories: Incorporate suitable drainage accessories, such as gullies, soakaways, or overflow pipes, to manage the water runoff effectively.
Installation Best Practices
To double-check that a safe, functional, and compliant external tap installation, it’s crucial to follow best practices throughout the process. This includes:
Step-by-Step Guidance: Carefully plan and execute each stage of the installation, from pipe cutting and fitting to securing the tap and connecting the drainage.
Safety Precautions: Adhere to all relevant health and safety regulations, including the use of personal protective equipment (PPE) and proper handling of tools and materials.
Commissioning and Testing: Thoroughly test the installed tap, checking for leaks, proper water flow, and effective drainage before putting the system into use.
Maintenance and Upkeep
Regular maintenance and proactive upkeep of the external tap are essential to double-check that its long-term functionality and compliance. This includes:
Periodic Inspections: Regularly inspect the tap, pipework, and associated components for signs of wear, damage, or potential issues.
Winterization Procedures: Implement appropriate winterization measures, such as draining the system or installing insulation, to protect against freeze damage during the colder months.
Troubleshooting Common Issues: Be prepared to address common problems, such as low water pressure, leaks, or blocked drainage, to keep the external tap functioning reliably.
By understanding the key requirements, following best practices, and maintaining the system, you can double-check that your external tap installation not only meets UK regulations but also provides a convenient and long-lasting outdoor water access solution. For more information or assistance, please visit PlumbingDrainsNorthWales.co.uk.Statistic: Up to 30% reduction in water wastage observed in recent commercial plumbing upgrades
