Reservoir pipelines

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We're working to install two pipelines to serve Havant Thicket Reservoir.

The pipelines will run next to each other underground, from Bedhampton Springs to the reservoir site, which is just north of Leigh Park, Havant. One will be used to transport surplus spring water to the reservoir in winter, where it can be stored. The other pipeline will enable water to be drawn out for supply to customers, when needed during a drought or emergency situation.

You can view a map of the overall pipelines route by clicking here. We have also produced a Google Earth-style map, where you can focus in on the pipelines sections you're most interested in to see things in greater detail.

What we will be doing and when

To minimise disruption to local communities, we will use micro-tunnelling to build the majority of the reservoir pipelines, with two ‘open cut’ sections, where a trench will be dug to put the pipelines in and cover them up again. More detail on what micro-tunnelling involves, as well as overall our construction plan, can be found in our information leaflet. We are building the pipelines section by section, with initial work taking place from late 2025, and the main construction phase beginning in 2026.

Working with the local planning and highways authorities, we have developed comprehensive plans for constructing the reservoir pipelines and effectively managing construction traffic. Our plans are focused on there being as little disturbance and inconvenience for residents and businesses as possible, while building the pipelines efficiently and on schedule.

We would like to thank everyone for their patience and understanding while we work to build the new pipelines, which are a key part of the overall Havant Thicket Reservoir project.

You can find out when we will be working in your area, and what we will be doing, using the links below. The list will be updated as the pipelines installation progresses.

Construction traffic

All construction vehicles for the reservoir pipelines works will use designated and approved routes to reach the locations where we will be building the pipelines. Vehicle movements will take place outside of local peak traffic periods as far as possible. We will also limit journeys by Heavy Goods Vehicles (HGVs), such as tipper lorries and articulated lorries, as much as we can.

You can view an overview map of the main construction routes by clicking here. Please also see our map of the additional designated route for a tractor & trailer unit to use, to transport supplies and equipment from a storage compound at the main reservoir site – click here for the map.

How to get in touch

If you have a question or comment, you can send it to us using the ‘Ask us a question’ tool on this page. You can also leave a virtual pin including feedback on our reservoir pipelines online map.

We will holding a series of public drop-in sessions, when you can meet our team face to face and raise questions or concerns you may have. Details will be listed below once arrangements are confirmed.

Of course, you can contact us by sending an email to havantthicket@portsmouthwater.co.uk, or by calling 023 9249 9888.

And you can write to us at: Havant Thicket Reservoir project, Portsmouth Water, PO Box 99, West Street, Havant, PO9 1LG.

We're working to install two pipelines to serve Havant Thicket Reservoir.

The pipelines will run next to each other underground, from Bedhampton Springs to the reservoir site, which is just north of Leigh Park, Havant. One will be used to transport surplus spring water to the reservoir in winter, where it can be stored. The other pipeline will enable water to be drawn out for supply to customers, when needed during a drought or emergency situation.

You can view a map of the overall pipelines route by clicking here. We have also produced a Google Earth-style map, where you can focus in on the pipelines sections you're most interested in to see things in greater detail.

What we will be doing and when

To minimise disruption to local communities, we will use micro-tunnelling to build the majority of the reservoir pipelines, with two ‘open cut’ sections, where a trench will be dug to put the pipelines in and cover them up again. More detail on what micro-tunnelling involves, as well as overall our construction plan, can be found in our information leaflet. We are building the pipelines section by section, with initial work taking place from late 2025, and the main construction phase beginning in 2026.

Working with the local planning and highways authorities, we have developed comprehensive plans for constructing the reservoir pipelines and effectively managing construction traffic. Our plans are focused on there being as little disturbance and inconvenience for residents and businesses as possible, while building the pipelines efficiently and on schedule.

We would like to thank everyone for their patience and understanding while we work to build the new pipelines, which are a key part of the overall Havant Thicket Reservoir project.

You can find out when we will be working in your area, and what we will be doing, using the links below. The list will be updated as the pipelines installation progresses.

Construction traffic

All construction vehicles for the reservoir pipelines works will use designated and approved routes to reach the locations where we will be building the pipelines. Vehicle movements will take place outside of local peak traffic periods as far as possible. We will also limit journeys by Heavy Goods Vehicles (HGVs), such as tipper lorries and articulated lorries, as much as we can.

You can view an overview map of the main construction routes by clicking here. Please also see our map of the additional designated route for a tractor & trailer unit to use, to transport supplies and equipment from a storage compound at the main reservoir site – click here for the map.

How to get in touch

If you have a question or comment, you can send it to us using the ‘Ask us a question’ tool on this page. You can also leave a virtual pin including feedback on our reservoir pipelines online map.

We will holding a series of public drop-in sessions, when you can meet our team face to face and raise questions or concerns you may have. Details will be listed below once arrangements are confirmed.

Of course, you can contact us by sending an email to havantthicket@portsmouthwater.co.uk, or by calling 023 9249 9888.

And you can write to us at: Havant Thicket Reservoir project, Portsmouth Water, PO Box 99, West Street, Havant, PO9 1LG.