Where do I start?

So, how should water companies go about rejuvenating more of their existing infrastructure? The first step is to take a comprehensive assessment of its condition and remaining lifespan, Sika says. This may involve carrying out an advanced inspection or using testing techniques to assess structural integrity, capacity and performance.

Monitoring and data analysis are then required to indicate current and future capacity and operational efficiency. Once the state of existing assets has been accurately determined, utilities can identify assets in need of investment and prioritisation, and develop strategies for optimisation, rehabilitation and modernisation. The result should be a reduction in capital expenditure and reduced need for construction – welcome in AMP8 with skills and resources tight.

Repairing and protecting existing underused or underperforming potable water tanks means meeting Drinking Water Inspectorate (DWI) and Water Regulations Advisory Scheme (WRAS) regulations. Materials also require certification for contact with drinking water and must not leach harmful chemicals or contaminants. They must also comply with local regulations and best practice for water resource protection.

It's also crucial to have a comprehensive quality assurance and control programme in place to ensure rehabilitation work meets standards for safety, performance, and durability. This involves thorough inspections, testing and monitoring throughout the project lifecycle, as well as post-installation evaluations to verify the effectiveness of the repairs.

When rehabilitating infrastructure, getting new materials onto existing structures is not necessarily straightforward. Water tanks and reservoirs often feature complex geometries and confined spaces, making it difficult to achieve uniform coverage with protective coatings or liners. Proper surface preparation, including cleaning and removal of contaminants or loose materials, helps ensure the longevity and effectiveness of the rehabilitation.

Finally, the operational requirements of the water tank or reservoir must be considered. Assets often need to be taken out of service for extended periods, which can disrupt water supply systems. Careful planning and coordination with utilities and customers is necessary to minimise service interruptions.

Sika and large suppliers such as Stonbury favour circular economy principles when it comes to making the most of existing water industry infrastructure. That means designing assets with a focus on material reuse, recycling, and resource recovery, minimising waste, and reducing the environmental impact associated with new construction and demolition activities.

By embracing these principles, water companies reduce their reliance on virgin materials, lower their carbon footprint, and contribute to the development of a more sustainable economy. Incorporating sustainable design and energy-efficient technologies reduces the cost of operation and environmental impact of water infrastructure.

In turn, this approach can enhance long-term resilience by reducing dependence on finite resources – and minimising exposure to volatile energy markets.