About MWH Treatment
MWH Treatment — a Stantec company — is the UK water sector's leading specialist process engineering and MEICA contractor. Their distinctive capability is the integration of civil and structural, process, MEICA and commissioning delivery — particularly on complex water treatment works (WTW) and wastewater treatment works (WwTW) upgrades. MWH has held water company framework positions continuously through AMP5, AMP6 and AMP7, and is one of the strongest positioned contractors entering AMP8.
AMP8 Framework Positions
MWH Treatment holds the following confirmed AMP8 framework appointments in the UK water sector:
| Water Company | Framework | Notes |
|---|---|---|
| Scottish Water | Non-Infrastructure Programme (JV with Galliford Try) | £700m, 6-year water and wastewater non-infrastructure framework. MWH/Galliford Try 50:50 JV. |
| Southern Water | Strategic Delivery Partner (JV as CMDP+) | Part of £3.7bn SDP framework. CMDP+ joint venture with Costain for non-infrastructure above-ground works. |
| Scottish Water | 6-Year Contract Extension | MWH Treatment and Galliford Try won a 6-year contract extension on Scottish Water's non-infrastructure framework — one of the longest-standing framework relationships in the UK water sector. |
Supply Chain Opportunities
MWH Treatment's supply chain needs are centred on their process engineering and MEICA strengths. High-demand subcontractor categories include: specialist MEICA contractors (mechanical, electrical, instrumentation), process equipment suppliers (UV, membranes, chemical dosing), civil and structural subcontractors, specialist commissioning engineers, ICA/SCADA specialists, environmental consultancy, and CDM health and safety services.
Water Industry Hub tracks all AMP8 framework appointments and live tenders — including sub-lot details and named Tier 1 contacts — so you can target your business development at the right people at the right time. Silver membership includes a framework watch list covering MWH Treatment and all other major AMP8 contractors.
How to Work With MWH Treatment
MWH Treatment procures subcontractors through their supply chain portal and through framework-specific supply chain events. As a Stantec company, MWH has access to global supply chain resources but maintains a strong preference for UK supply chain partners with water sector experience and appropriate WIRS/UVDB pre-qualification. Early engagement — before ITT publication — is strongly recommended.
Related Resources
How to Get on a Water Company Framework — Complete Guide 2026 →
WIRS, WIRSAE, WIAPS and UVDB — Complete Accreditation Guide →
AMP8 Framework Appointments Tracker →
Track MWH Treatment Tenders and Sub-Contract Lots
Water Industry Hub monitors all AMP8 framework activity — including sub-lot awards, supply chain events and pipeline notices — across all 17 UK water operators and their Tier 1 contractors.
See Silver Package → View Framework Tracker →