From planning and design to testing and certification, we handle it all under one roof to make your project smooth and hassle-free.
Planning a new build or renovation in London? You might need a Water Efficiency Calculation to comply with local rules. At Armeec, we check your plumbing fittings and water-saving measures to make sure your home stays within the 125 litres per day limit. We’ll provide full documents to meet Part G of the Building Regulations, helping you pass planning quickly and easily.
A Water Efficiency Calculation is a legal requirement under Part G of the Building Regulations for all new build homes and certain conversions. It ensures that water use stays within legal limits, typically 125 litres per person per day, including 5 litres for outdoor use.
In areas like London, where water scarcity is a concern, stricter targets may apply, sometimes as low as 110 or even 90 litres per person per day. This is also becoming more common in growing cities like London, Birmingham, and Liverpool, where sustainable development is a key planning priority.
These calculations estimate a home’s expected water use and are essential for creating environmentally responsible properties. To comply with Part G, your design must use water-efficient fixtures, appliances, and strategies. The Water Efficiency Calculator checks flow rates of taps, showers, toilets, and other devices to ensure the total usage stays within the target.
Reducing water use can also involve greywater recycling or rainwater harvesting, methods becoming more popular in both new builds and retrofits across Birmingham and London. Failure to meet these standards may negatively affect your Energy Performance Certificate (EPC) rating, which could make selling or letting the property more difficult, especially in competitive markets like London or Liverpool.
It’s crucial to get your water efficiency calculations done early in the project, ideally during the design stage. This is particularly important for developments in cities like London, Birmingham, and Liverpool, where local authorities are becoming more focused on sustainable planning practices.
Completing these calculations upfront allows you to make informed decisions about your layout, water-using fixtures, and appliance models before anything is installed. In areas such as London, where stricter water usage limits may apply, early planning helps avoid complications during compliance checks.
It’s far easier, and more cost-effective, to make design changes early on than to modify fixtures after installation. These calculations ensure your property meets water consumption targets, helping you avoid costly alterations and delays later in the project.
Key Times to Get Water Efficiency Calculations Done:
Getting your water efficiency calculations done at the right time can save you time, money, and effort down the road, whether you’re planning a project in London, London, Birmingham, or Liverpool. It ensures your property is both sustainable and fully compliant with Part G regulations.
At ARMEEC, we’re here to guide you through every step of the process. No matter where your project is based, we’ll help make sure everything’s in order from the start, so you can move forward with confidence.
To meet water efficiency targets and comply with building regulations, whether your project is in London, London, Birmingham, or Liverpool, it’s important to consider the water usage of key household appliances. Here’s a breakdown of what’s involved and the type of information you’ll need
Toilets come as either single flush or dual flush. We’ll need the flush volume in litres for both settings to calculate overall water use.
The flow rate of kitchen and bathroom taps, usually listed in litres per minute, shows how much water is used while running. This figure is usually provided by the manufacturer.
Baths are assessed based on their capacity to the overflow, measured in litres. This helps estimate how much water is used when full.
The flow rate of a showerhead, in litres per minute, depends on its make and model. This figure helps us calculate water usage during daily showers.
Dishwashers are rated in litres per place setting. We use this number to understand how much water is consumed per cycle, based on the appliance’s size.
Water use in washing machines is measured in litres per kilogram of dry clothes. This tells us how much water is used per load depending on its capacity.
Whether you’re working on a project in Birmingham, Liverpool, or elsewhere, understanding these figures is essential. Choosing efficient appliances helps you stay compliant while reducing your property’s water footprint and supporting sustainability.
The current water efficiency limits are in place to help ensure that homes across London, London, Birmingham, and Liverpool use water in a sustainable and responsible way while staying compliant with building regulations. These limits are based on the amount of water used per person each day and are broken down into different levels. Here’s a quick overview:
Credits for Meeting Targets: When you meet the required water efficiency targets, you don’t just stay compliant, you can also earn valuable credits that boost your property’s overall performance score.
To comply with the water efficiency targets, the calculation is based on factors like occupancy, fixture types, and flow rates. For example:
By carefully selecting water-efficient fittings and appliances, you can ensure your property meets the required levels, helps conserve water, and even earns credits for your efforts.
Our team has deep knowledge of water efficiency regulations, ensuring your project meets all compliance requirements.
We deliver fast results—usually within 5-10 working days, keeping your project on track.
Wherever your project is located, we provide efficient, remote services across the country.
Get clear, detailed reports for your planning applications, ensuring compliance and ease with local authorities.
We offer personalized guidance on fixtures and appliances to help you meet water efficiency targets.
Planning a new build or renovation in London? Let’s ensure your project meets Part G compliance from the start. Fill out the form with your project details, and our team will be in touch shortly to help.
