As water companies increasingly rely on demand management to meet future water resource challenges, robust evidence of water savings has become essential. For Southern Water, Artesia developed an innovative AMP8 Water Efficiency Savings Reporting Tool that provides a transparent, auditable framework for estimating and reporting the benefits of both household and non-household water efficiency programmes.
The tool combines industry evidence, behavioural science and company-specific data to quantify savings from a wide range of interventions, from retrofits and leak repairs to customer engagement and behaviour-change campaigns. By incorporating assumptions around customer engagement, behavioural response and savings degradation over time, the tool enables more confident reporting against regulatory performance commitments while providing clear audit trails.
Importantly, the solution looks beyond annual reporting. Its forward-planning capability allows Southern Water to test future intervention programmes across AMP8, helping identify the mix of activities needed to deliver long-term demand reduction targets and improved drought resilience.
The result is a robust, transparent and auditable reporting tool that gives Southern Water a consistent and evidence-based approach to quantifying, reporting and planning water efficiency savings across AMP8.
