As the world steadily shifts toward a more sustainable future, controlling and managing water efficiency in new buildings has become a central focus. Governments worldwide are implementing strict regulations to ensure new constructions are designed to conserve water effectively.
Today, water efficiency standards are an integral part of building regulations in various industries, necessitating the design of water-conscious structures.
Part G of Building Regulations: Water Efficiency Testing in the UK:
Water efficiency is now a crucial part of building regulations in the UK too. Part G of the Building Regulations requires new buildings to meet water efficiency standards, including testing.
Moreover, the government has given local planning authorities the power to set even stricter water-saving targets beyond the standard rules. This means that new developments must be designed to use water more efficiently than ever to save resources and promote sustainability.
Part G of Building Regulations: Water Efficiency Calculations in the UK
Water consumption in new dwellings is measured using water efficiency calculations. Part G of the building regulations stipulates certain limits for each dwelling, and to comply with these regulations, the building owner must show that the property’s water consumption is well within the given limits. These calculations and regulations apply to new dwellings, major renovations and also commercial facilities.
If any building owner fails to comply with these regulations, it may negatively impact the SAP calculations in the UK and the EPC certificates of the buildings.
According to the regulations, a new build must meet the 125 litres per person per day limit (applies to internal potable water). The limit can exceed basic standards if the development is subject to the Code for Sustainable Homes (CSH). The code sets specific water usage targets categorized into levels 1 to 6. Each level has a corresponding maximum water usage per person per day:
- Levels 1 and 2: 120 litres per person per day.
- Levels 3 and 4: 105 litres per person per day.
- Levels 5 and 6: 80 litres per person per day.
The above limits are set using the methodology outlined in “Water Efficiency Calculator of New Dwellings,” the UK Government’s national calculation methodology for assessing water efficiency in new dwellings w.r.t CSH.
Water Efficiency Calculations & Water Efficiency Certificate in the UK:
Water usage is assessed through efficiency calculations based on fittings, occupancy, and flow rates. These calculations must be done at the design stage to ensure compliance and again at project completion to verify the results. For new buildings, water reduction strategies also need to be demonstrated.
Having an expert water calculation assessor ensures the process is smooth and hassle-free. The calculations are finalized by carefully factoring in flow rates and overall water usage, and a water efficiency certificate is generated. This certificate is submitted for building regulation approvals and proves the property meets water efficiency requirements per Part G of Building Regulations.
If any issues arise with the property’s water usage, necessary adjustments are made to bring it into compliance.
Water Calculation Services in London for New Constructions
Southern Assessors has been delivering expert water calculation services in London for years. Our fully qualified engineers provide water efficiency calculations for new constructions within 24 hours, guaranteeing compliance with Part G regulations without delays or extra requirements.
As one of London’s leading water calculation service providers, we have completed hundreds of assessments, helping clients overcome compliance challenges with cost-effective solutions.
For reliable and efficient water calculation services in London, contact us today!