400,000+
40+
The challenge
Water Plus was created as Severn Trent and United Utilities combined their business-retail operations ahead of the deregulation of England’s non-household water market.
The new organisation had to bring together two mature technology estates, each with established ERP platforms, third-party systems, APIs and data flows, while maintaining continuity for around 400,000 customer accounts and a business with approximately £1bn in annual sales.
The challenge was not to rebuild everything from scratch. It was to make two established environments operate together reliably, within a fixed regulatory timetable and without disrupting customers or day-to-day operations.
What Mitra did
Mitra designed and delivered the WSO2 integration middleware architecture that connected the two estates.
The platform connected ERP systems, APIs, external services, enterprise data flows, alerts and supporting business capabilities through a common integration layer.
The architecture operated across four environments and brought together more than 40 integrations, including APIs, messaging and data services across the combined estate.
The outcome
The two legacy environments were integrated without negative customer or business impact, while access to operational data improved and business processes became faster.
The common integration layer also created a more manageable foundation for ongoing change, external connectivity and future service development.
More than 400,000 accounts and approximately £1bn annual sales supported through a no-disruption transition
More than 40 integrations across the combined estate
What this proves
Mitra can integrate complex, established technology estates around a major business event, enabling organisations to combine operations and modernise without first replacing the systems they already depend on.
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