BAA Terminal 5


BAA was committed to building Terminal 5 in an environmentally and socially responsible way. It took an estimated 37 million man-hours to construct T5 at an estimated cost of £4 billion and represented a huge programme of construction works.

BAA had a far reaching and sustainable water strategy for Heathrow Terminal 5, including measures to minimise the use of potable water and waste water disposal. This strategy included the abstraction of groundwater from boreholes and the harvesting of rainwater. As part of this strategy, BAA commissioned ADSM to undertake detailed monitoring in two existing toilet and washroom facilities at Heathrow Airport – in Terminal 1 and in Terminal 4 – in order to understand usage patterns and water consumption by visitors to the terminals.

What We Did

ADSM installed numerous measurement devices in order to separately identify and quantify the water usage in all these Terminal washroom facilities – toilets, urinals and wash basins. A technologically-advanced optical passenger counter was designed and installed at the entrance to each washroom facility. All of the data collected was recorded and logged at one minute intervals over a period of several weeks. This data was subsequently analysed.

Based on the analysed data, ADSM was able to provide the Terminal 5 design team with detailed information and recommendations regarding the expected water consumption and the water efficiency technologies that they should employ to minimise water consumption in the new toilet and washroom facilities to attain best practice.

As a result of the water usage monitoring and analysis, water efficiency modifications were also made in Terminals 1 and 4 – including the installation of electronic water saving controls – making considerable savings on water consumption and helping to meet water conservation targets.

Don’t Just Take Our Word For It

“As Terminal 5 is very much state-of-the-art, we wanted to ensure that the design is both environmentally responsible and sustainable. This extends right through to the most water-efficient devices and measures in our washrooms and toilets – and, by undertaking analysis and following recommendations from ADSM, we believe we have achieved this.”

Sustainability Manager