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This briefing explains why AMP8 is a defining investment cycle for the UK water sector and why delivery risk will matter as much as ambition. We summarise who is impacted (companies, supply chain, customers), what’s driving the scale-up, and the economic and environmental trade-offs that will shape outcomes from 2025 to 2030.
Ofwat’s AMP8 final determination for 2025–2030 approves £104bn of expenditure, described as the largest investment programme since privatisation. The paper reviews stakeholder impacts (including financing needs for companies and capacity pressures for contractors), customer bill implications, and macroeconomic effects such as employment and inflationary pressures. It identifies procurement constraints (skills gaps and carbon-intensive materials), summarises environmental objectives (including storm overflow reduction and biodiversity net gain), and closes with key milestones and implementation risks across the AMP8 period.
Ofwat's final determination for the 2025–2030 period (AMP8) approves a totalexpenditure of £104 billion, marking the largest investment programme sinceprivatisation.
Water Companies
• Opportunities: Access to increased funding facilitates infrastructure upgrades and service improvements.
• Risks: Companies are expected to raise over £7 billion in equity to support their investment programmes, posing challenges in securing necessary financing.
• Opportunities: The surge in projects offers growth prospects for contractorsand suppliers.
• Risks: Potential bottlenecks due to labor shortages and material supplyconstraints may affect project timelines.
• Opportunities: Anticipated improvements in water quality and servicereliability.
• Risks: Average household (water and sewerage) bills are forecast to rise byalmost £250 over the next five years, a 51% increase, reaching £730 by 2030.ofwat
• Employment: The investment is expected to create over 30,000 new jobs and 4,000 apprenticeships across the UK.
• Regional Development: Infrastructure projects are anticipated to stimulate economic growth in various regions.
• Inflationary Pressures: Increased demand for materials and labor may contribute to inflation in the construction sector. Procurement Challenges – Engineering Labour, Carbon-Intensive Materials
• Labour Shortages: The sector faces a significant skills gap, with an estimated need for 100,000 new operatives by 2030. causeway.com
• Material Supply: High demand for carbon-intensive materials like concrete and steel may lead to supply constraints and increased costs.
• Storm Overflow Reduction: Investment of £11 billion is allocated to reduceoverflow spills, aiming for a 28% reduction in storm overflows and a 30%reduction in total pollution. ofwat.gov.uk Reducing pollution
Further, we are supporting a £6 billion programme to reduce nutrient pollution. This will help improve the health of our rivers and lakes, removing harmful elements such as nitrogen or phosphorus. These mainly emerge from fertilisers, animal waste and wastewater discharges. Action will include upgrading treatment works to remove nutrients from wastewater, working with farmers to promote sustainable farming practices, and using nature-based schemes like wetlands to provide natural treatment solutions. Over 2025–30, we expect the sector to reduce phosphorus entering rivers from water company activities by 28%. Our decisions support action on around 50% of water sector-related reasons for water bodies declining in condition or not meeting national environmental quality standards.
Reduce storm overflow spills by 60% on 2021 levels, with over £2 billion of investment Total pollution incidents down by 30% Reduce internal sewer flooding events by 40%
• Biodiversity Net Gain: A mandatory 10% biodiversity net gain fordevelopments is introduced, promoting nature-based solutions such aswetlands and rain gardens. gov.uk
• Timeline: AMP8 spans from April 2025 to March 2030.• Implementation Risks: AMP8 represents a substantial investment phase forthe UK water sector, offering opportunities for infrastructure developmentand environmental enhancement. However, the success of this programmedepends on effective stakeholder collaboration, addressing procurementchallenges, and ensuring financial and operational readiness.
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