Thames Water has gone out to tender with a major contract for leak detection and testing services worth an estimated £203 million in total.

Leak detection is a high profile category for Thames Water - it includes the proactive detection of non-visible leaks, specialised consulting and additional projects related to leakage detection.

Activities related to the detection of leakage are performed across three regions: North London, South London and Thames Valley. The water company is now looking to implement a step change in current performance to make sure it meets its leakage target and commitments.

The contract is being tendered in four separate Lots – with a maximum number of four lots awarded to any one tenderer

Lot 1 Leakage Detection Services — North London (£91 million)

Lot 2 Leakage Detection Services — South London (£48 million)

Lot 3 Leakage Detection Services — Thames Valley (£24 million)

Lot 4 Leakage Detection Projects (£40 million)

Activities covered under Lots 1, 2 and 3 include:

Recurrence leakage activity:

• open sounding
• lift and shift logging
• permanent noise logger follow up
• step testing
• leak noise correlating
• customer Side Leakage proving

Reduction leakage activity:

• further leakage checks
• stopper meter investigations
• missing/unmeasured property checks
• property coding
• property allocation errors

Operability activity including:

• Pressure Zero Testing
• boundary valve proving
• flush testing a DMA
• flow testing a District Meter
• commercial night use investigations

Leakage detection projects under Lot 4 will cover all leakage detection activities for a DMA, as per Lot 1, 2 and 3 where extra intervention, on a project or campaign basis, is required to meet a specific leakage target in a DMA.

Thames Water is looking to appoint up to 9 suppliers to the framework agreement, which will run for a maximum term of 8 years.

Time limit for receipt of tenders or requests to participate is 17^th September 2018 – click here to access the tender documentation.