Southern Water Services has announced the award of four major contracts under its new collaborative framework for wastewater network services worth £466 million. The contracts form part of Southern Water’s preparation for AMP8, which is expected to be the company’s largest investment programme to date.
The framework aims to enhance the management and maintenance of Southern Water’s clean and wastewater networks, with a particular focus on implementing new technologies and proactive network operations. The investment supports key initiatives such as the Water Industry National Environment Programme (WINEP) and the Water Resources Management Plan (WRMP).
The framework is divided into four service categories (lots), covering a wide range of operational and maintenance activities. These include reactive repairs, planned preventative work, and the integration of innovative monitoring systems. Southern Water currently operates a digitalised smart network featuring over 23,000 sensors and nearly 1,000 duration monitors, designed to shift operational focus from reactive to proactive responses.
The following contracts have been awarded:
- Lot 1: Operate and Maintain
Awarded to Lanes Group (Lower Wortley)
This lot covers initial responses to sewerage-related issues, maintenance of sewer collection networks, CCTV inspections, cleaning services, and the upkeep of sewer level monitors.
Contract Value: £272 million
Reference: 015751-2025-1 - Lot 2: Civils & Rehab
Awarded to Cappagh Browne Utilities (Enfield)
This includes the construction of new sewer infrastructure and the rehabilitation of existing systems across Kent, Sussex, Hampshire, and the Isle of Wight.
Contract Value: £120 million
Reference: 015751-2025-2 - Lot 3: Manhole Covers
Awarded to Lanes Group (Lower Wortley)
This lot involves the repair and replacement of manholes throughout Southern Water’s operational areas.
Contract Value: £26 million
Reference: 015751-2025-3 - Lot 4: Lining
Awarded to Mcallister Bros (Newry)
This service includes the rehabilitation of sewer networks using various lining techniques within the same geographic coverage.
Contract Value: £48 million
Reference: 015751-2025-4
Southern Water stated that the selected providers will work in partnership with the utility to deliver services in line with its engineering standards, focusing on both technical capability and collaborative delivery. The framework is designed to support long-term improvements in operational efficiency and environmental performance.
