Continuous Water Quality Monitoring
Southern Water Services LimitedEstimated Value
Up to £33,750,000
Deadline
Not specified
Published
19 December 2025
Type
Not specified
Key points
- Quantify local water quality impacts from Water and Sewage Company (WaSC) assets.
- Improve stakeholder & public understanding of impacts from the WaSC assets on water quality.
- Inform improvement programmes to meet Storm Overflow Discharge Reduction Plan (SODRP) targets.
- Inform regulatory action. The draft technical specification requires that monitoring must:
- Be linked to existing regulatory standards;
- Provide data which can be attributed to the target assets;
- Provide understandable data to the public;
- Provide understanding of how performance and water quality impacts of water company assets change over time; and
- Show water quality impacts of water company assets in near real time By 2035, SWS will be required to demonstrate that at least 75% of storm overflows discharging into or near ‘high priority sites’ cause no local adverse ecological impact. These sites are programmed for monitor installation during AMP8 (2025-2030) . DEFRA has published the Interim Technical Standard, setting minimum specifications & performance criteria, to cover the transitionary period prior to development & implementation of a bespoke CWQM MCERTS standard. The interim technical guidance recommends that WaSCs & contracted service providers undertake to develop, and or use, existing standards to establish Quality Management Systems (QMS) covering the following:
- Equipment standards
- Installation standards
- Monitor siting
- Maintenance & calibration
- Data capture, storage, sharing, & validation Southern Water Services Ltd. is seeking information from all interested suppliers, manufacturers, and solution providers regarding solutions for CWQM, in line with regulatory requirements under Section 82 of the Environment Act 2021 and DEFRA’s CWQM Programme. This RFI aims to gather insights into available technologies, capabilities, and approaches that align with or exceed the interim technical standards outlined below. Responses will inform future procurement and standard development. We welcome responses from organisations offering complete systems, modular components, relevant services or innovative approaches to monitoring, data management, and assurance. The objective is to understand market capabilities, indicative costs, and technical feasibility for deploying monitoring systems across riverine environments. To enable us to fully understand the market, interested parties should complete and return the “Continuous Water Quality Monitoring (Section 82) 2025 Request for Information”. This first RFI will inform further procurement activities which will include additional engagement requests, concluding with an invitation to tender (ITT). Suppliers are invited to submit information on products and/or services related to CWQM, with regard to:
- Site planning & investigation, including audit of final monitor locations,
- Supply of approx. 300 monitors & data transmission equipment,
- Installation of approx. 300 monitoring solutions, across Southern Water’s Operational Region (Kent, East and West Sussex, Hampshire and Isle of Wight).
- Operation of the monitoring equipment, including calibration and maintenance,
- Data collection, visualisation & analysis, As this programme of work is a regulatory requirement within the WINEP, information should be provided to support capability and capacity for offered products and/or services to ensure adherence to the WINEP regulatory completion date of 31st March 2030. Solutions should include:
- Instrumentation: Multi-parameter sondes, process instrumentation, chemistry analysers
- Power Supply: Available options, focussing on self-contained units (e.g. solar powered)
- Telemetry: Real-time data transmission every 20 minutes
- Data Logging: Every 15 minutes
- Options for Portal Access: Options for integrating with SWS digital systems, as well as Public-facing interfaces with reporting and API export.
Regulations cited
- Environment Act 2021
AI AnalysisMembers
Requirements, key tasks and tips for reading this tender — included with Tendarix membership.
£4.99/month after a 7-day free trial. Cancel anytime before it ends and you pay nothing.
Likely incumbents
Suppliers who won similar work from this buyer in the last 5 years.
- 1
STANTEC UK LIMITED
£11m
total awarded
- 2
Wild Capital 1 Ltd
£3m
total awarded
- 3
Hydraulic Analysis Limited
£1m
total awarded
- 4
Harry Ferguson Farms Limited
1 contract wonlatest 1 Oct 2026ends 31 Mar 2027£2m
total awarded
- 5
Hampshire and Isle of Wight Wildlife Trust
1 contract wonlatest 1 Oct 2026ends 31 Mar 2027£2m
total awarded
STANTEC UK LIMITED is the most likely incumbent based on recency and category match. To win, bidders typically need a clearly differentiated proposition or a price advantage.
Before you bid, buyers check
two years of filed accountsyour financial standingturnover vs contract valueyour Companies House recordcash flow for 30-day termscredit scores and ratios
Actions
Start free trialto open noticeCreate an account and start a 7-day free trial to open the buyer’s own notice and tender documents, plus fit scoring and the Bid Writer. Then £4.99/month — cancel anytime.
Open Bid WriterIndependent software, web & cloud studio. We design, build and grow digital products that quietly outlast their category.
How to Apply
Step-by-step submission guide
Submission Portal
Find a Tender
Open the original notice
Click the button below to view the full notice on Find a Tender Service (FTS)
Check the procedure type
The "Procedure" section tells you if it's Open (one stage) or Restricted (SQ then ITT). This changes how you apply
Access the eSourcing portal
FTS notices link to the buyer's eSourcing platform — register there to access documents
Complete the Selection Questionnaire
Higher-value contracts often require an SQ first — this pre-qualifies you before the full bid stage
Submit electronically
Upload your completed response through the eSourcing platform before the closing date and time
FTS contracts are above UK procurement thresholds. Late submissions are strictly rejected — submit at least 24 hours before the deadline to avoid portal issues.
Buyer Profile
Southern Water Services LimitedKey Dates
Published
19 December 2025
Submission deadline
Not specified
Notice type
planning
Source
find a tender
Related Tenders
HV cable procurement
UKAEA is undertaking refurbishment works to the J5 electrical infrastructure to support the ongoing operation and reliability of the Culham Campus power distribution network. As pa
Trunk road litter picking
Annual litter picking of the verges, laybys and slip roads of the Highways Agency’s trunk roads within the Borough of Test Valley area, with optional ad-hoc related activities that
Community suds planters project
Through Project Sponge, the council intends to deliver phase two of the downpipe planter programme. Phase two will include planter installations at the following locations: 1. Cipp
The replacement of the sports hall flat roof, edenbridge leisure centre
The District Council of Sevenoaks is looking for a qualified roofing contractor to replace the flat roof on the Sports Hall at Edenbridge Leisure Centre, while keeping the centre safe and as operational as possible during the works.