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Catchment Management

Sheffield Water Supply

We’ve recently started making some temporary changes to how we supply Sheffield with water. We don’t just rely on reservoirs to supply our customers; we abstract water from rivers and from underground boreholes so we have the flexibility to move this around in our underground pipe network. This makes Yorkshire’s water supply more resilient as we can move water around to where it’s needed, like we are doing in Sheffield at the moment.

We are moving water from York and East Yorkshire into Sheffield and the water from those areas is taken from rivers and then treated at one of our treatment works. Water from rivers tends to be harder than water from reservoir sources, so some customers may notice a slight difference.

This change has been made so we can maintain the levels of water we have in our reservoirs around Sheffield. Since the start of July, we’ve seen a big increase in the amount of water people have been using and this has had an impact on our reservoir stocks, so we’ve made this change to help balance out our water supply system.

The water that’s now supplying Sheffield may be slightly different to what residents are used to, but this is nothing to be concerned about. This water is from the River Ouse and the River Derwent instead of the reservoirs on moorland around Sheffield.

The water that we source from rivers is typically classed as hard water and water from reservoirs is normally softer as it comes from moorlands. Water hardness can differ across Yorkshire as it depends on the soil and rocks from where your water is taken and the amount of naturally occurring calcium and magnesium which has been dissolved in the water. Most of the customers in Yorkshire have water that’s been sourced from rivers and thousands of customers in York, Wakefield, Barnsley, Rotherham and Hull already have this water supply.

Some residents might not notice any changes, but some may notice a slight difference in their water. You can find further information in the video below.

At the moment, we don’t know when we will be switching the water supply back to normal in the area as this depends on how quickly the reservoirs fill back up.

Water Hardness

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