Closed
Sewer Sealing Request for Information
Descriptions
Southern Water is committed to reducing storm overflows and managing the volume of water entering the sewer network. A key part of this strategy involves sealing sewers to limit water infiltration and inflow, helping to protect the environment and improve network resilience.
We are inviting suppliers with proven expertise in sewer sealing to participate in this market engagement. The aim is to assess capabilities to deliver planned programmes using recognised industry techniques for sealing groundwater out of pipes such as:
• Cured-in-place pipe (CIPP) lining
• Pull-in-place liners
• Slip-lining
• Fold-and-form liners
• Full-length polymer coatings
• Targeted patch repairs
• Packer/resin injection
• Chemical/polyurethane grouting
• Cementitious grouts
• Mechanical joint seals
• Manhole rehabilitation
• Top Hat Installation
• Hot cure methods e.g Inversion, Steam Cure, UV light, LED light.
• Other sewer sealing/pathing techniques and innovations
• Other sewer sealing/pathing techniques and innovations
Information requested
• Overview of your experience and proven track record with the major sewer sealing techniques listed (though not exhaustive) above.
• Current and forecasted delivery capacity including crews and annual throughput.
• Possible geographical split for delivery including any regional offices, depots, or preferred operating areas.
• In-house technical capabilities and certifications for CCTV surveying, cleaning, lining, injection grouting, manhole rehabilitation and post-work validation.
• Ability to provide turnkey services including traffic management, reinstatement, emergency response and accurate reporting.
• Your appetite for sewer sealing supply chain innovation
This engagement is separate from the Wastewater Network Services - Lot 4, which focuses on reactive repair and maintenance of live assets. Instead, this initiative is forward-looking, targeting proactive sealing interventions to support our long-term environmental and operational goals.
Purpose and scope
The objective is to identify contractors able to programme and deliver sewer sealing works at scale, reduce inflow and infiltration, and restore or improve hydraulic and structural integrity across our sewer network. We seek information on supplier capacity, mobilisation readiness, geographic delivery options, and in-house technical capabilities for both pipe and manhole interventions.
Tender
Tender is planned to commence in late 2025/early 2026 to support planned Sewer Sealing work in AMP8, Contract commencing in 2026.
Timeline
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Tender Regions
CPV Codes
44130000 - Sewer mains
90470000 - Sewer cleaning services
90491000 - Sewer survey services
45232410 - Sewerage work
44163130 - Sewer pipes
45232400 - Sewer construction work
Keywords
waste conduits
sewer pipes
sanitation lines
sewer mapping
sewer mains
drain descaling
manhole cleaning
sewer inspection
sewer sweeping
sewage tubing
pipeline jetting
sewer unblock
line inspection
sewer line cleaning
CCTV drain survey
sewer system erection
sewerage civil works
sewer maintenance
flow and capacity survey
wastewater pipelines
sanitary sewer systems
sewer integrity testing
municipal sewer works
sewer line flushing
pipe tracing services
sewage main laying
municipal drain build
wastewater line build
pipeline surveying
high-pressure cleaning
underground drain pipes
pipe debris removal
sewerage infrastructure works
stormwater/sewer conduit work
underground sewer trenching
sewerage network construction
sanitary sewer installation
wastewater pipeline build
sewage network construction
combined sewer system build
waste & storm sewer build
pipeline trenching for sewerage
sanitary drainage network build
drain condition assessment
sewer pipeline installation
sub-surface sewer installation
wastewater disposal pipeline works
subsurface utility engineering
Tender Lot Details & Award Criteria
1 Tender Lots
Workflows
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