Site Investigation Survey Framework

Thames Water intends to establish a Framework Agreement to appoint suitably qualified suppliers to deliver site investigation surveys and associated deliverables across its operational area. The Framework will enable Thames Water (and, where applicable, permitted person and including main contractors) to call off individual surveys and/or programmes of surveys on an as‑needed basis during the Framework term.

This Framework is intended to cover both infrastructure and non‑infrastructure projects, which may take place on Thames Water sites, private or public land, and/or within highways and road environments. Thames Water reserves the right to refine the award criteria.

Please note that that deadline for asking for access to the PSQ & submitting of the 5 March 2026. Lot 3 covers ground investigation services to support geotechnical and geoenvironmental understanding for design, consents and construction planning across Thames Water's operational area.

Outputs will be delivered in line with the Standard Requirements, with appropriate safety, quality and data controls Core survey types Core means survey types you would expect to require on most commissions to establish a safe, buildable baseline for design, consents and construction planning • Geotechnical and geoenvironmental ground investigation • Electromagnetic (EM) Optional survey types Optional means survey types required when triggered by site conditions, risk, stakeholder needs or a specific design decision, but they may be common for certain asset types • Microgravity surveys • Vibration or acoustic surveys • Metal detection • Unexploded ordonnance (UXO) surveys Lot 4 covers integrated multidisciplinary survey programmes where Thames Water requires a single provider to plan, sequence and deliver surveys spanning multiple disciplines across Lots 1-3, producing consolidated outputs in line with the Standard Requirements for methodology, data, reporting and deliverables.