Case Studies

The Thames Water Ring Main (formerly the London Water Ring Main) is a major part of London’s potable water supply infrastructure. Originally constructed between 1988 and 1993, it forms a 50-mile ring of mostly 2.54 m (100”) diameter concrete pipeline to transfer potable water from water treatment works in the River Thames and Lea catchments […]

The low-pressure standard (formerly called DG2) is defined by Ofwat as a pressure of less than 10 metres at a flow of 9 litres per minute when measured on the customer side of the water company stop tap. Any properties in breach of this threshold are recorded on the low pressure register and the number […]

Keele University is situated in the village of Keele, Staffordshire, on the outskirts of Newcastle-under-Lyme. It was established in the 1940s and has grown considerably to educate approximately 10,000 students on a 625-acre (253ha) campus. The University owns and operates its own water supply infrastructure; this includes approximately 16km of pipework and a service reservoir. […]

As with all water companies, Northern Ireland Water (NI Water) work within the targets and guidelines set by their industry regulator, the Northern Ireland Utility Regulator and the Drinking Water Inspectorate (DWI). At present Northern Ireland’s existing potable water main infrastructure comprises approximately 26,700 km of water mains, delivering approximately 560 million litres of clean, […]

Thames Water’s water distribution network totals some 31,000km of mains that provides about 2.6 billion litres of water every day. This network has been built up over many years and includes pipes that were laid during the Victorian age. Pressure management is an established way of leakage reduction and network protection, ensuring that customers receive […]

The Water Supply GRID is the largest scheme ever undertaken by Wessex Water and provides important new infrastructure for the south-west region with resilience connections to Bournemouth Water, Bristol Water and South West Water via Wimbleball Reservoir – it is effectively a south-west area regional grid (see Figure 1 below). It has improved interconnectivity within […]

DG2 (Director General 2) is a status where, according to Ofwat, a customer receives inadequate water pressure generally under 1bar at their point of connection to the water main. Water companies are subject to annual regulatory fines for properties on the DG2 register above a threshold. Severn Trent Water arranges its distribution to cater for […]

Since the start of AMP5 in 2010, Wessex Water, in conjunction with Atkins Ltd and Servelec Technologies, has been developing its 74km Integrated Water Supply GRID to improve resilience, and ensure that a reliable supply of water can be maintained after the output from some sources has been reduced to alleviate low river flows. The […]

South East Water has reduced average pressure by 17.7% and is saving 4.9 million litres of water daily

Opportunities for pressure reduction within the network deliver cost-effective savings

Thames Water’s web-based water pressure software tool for tall buildings