Washington’s water supplier is one of five companies now under a formal transformation programme after the Drinking Water Inspectorate’s annual report identified systemic or repeated failures. Northumbrian Water, which serves 2.7 million customers across the north-east including Tyne and Wear, was placed in the watchdog’s enforcement spotlight alongside Southern, Thames, South West, and South East Water.
The Chief Inspector’s report, published on 7 July 2026, details a series of enforcement actions against the company during 2025. 12 Regulation 28(4) notices and 56 recommendations, the fourth highest tally of recommendations among all water companies.
The Drinking Water Inspectorate’s improvement programme list shows Northumbrian Water currently has 29 active enforcement notices, with completion deadlines stretching from this year to 2034. Notices cover the Mosswood clarifiers, company-wide disinfection policy, air valve risk management, and multiple service reservoir inspections across the region. Washington has already been the focus of significant infrastructure investment, including the £56 million Springwell Service Reservoir project designed to benefit over 50,000 properties directly and provide resilience for a further 200,000 across the wider area. The company continues to deliver hazard review actions and strengthen asset management while making progress closing existing legal instruments.
Northumbrian Water’s £3.6 billion AMP8 investment programme for 2025 to 2030, delivered through its Living Water Enterprise alliance of 33 partners, represents its most ambitious capital plan in its history.
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