Barncroft Way / Stockheath Lane
We are using micro-tunnelling to build the majority of the reservoir pipelines, as this will minimise disruption for local communities. More detail on what micro-tunnelling involves, as well as our overall construction plan, can be found in our information leaflet.
You can also view an overview map of the reservoir pipelines route by clicking here, or access our more detailed online map, where you can give us your comments by placing a virtual pin.
Key pipelines construction activities for Barncroft Way / Stockheath Lane
The work being carried out in your area is for access Shaft W4 of the pipelines, which will be located at Stockheath Meadow in the green open space north of the Hermitage Stream and tothe west of Stockheath Lane. The shaft will allow us to put a Micro-Tunnel Boring Machine (MTBM) underground to build sections of the pipelines.
- Quarter 1 = January to end of March
- Quarter 2 = April to end of June
- Quarter 3 = July to end of September
- Quarter 4 = October to end of December.
Quarter 3 2026: Site set up at Stockheath Meadow, including secure hoarding, noise control measures and a temporary access road from western side of Stockheath Lane.
Quarter 4 2026 to Quarter 1 2027: Construction of Shaft W4 at Stockheath Meadow.
Quarter 1 2027 to Quarter 4 2027: Tunnelling works from Stockheath Meadow to Hooks Lane playing fields,
Quarter 2 2027 to Quarter 1 2028: Tunnelling works between Shaft W4 at Stockheath Meadow to the Reservoir Discharge Chamber, south of Corhampton Crescent.
Quarter 2 2028 to Quarter 3 2028: Final fit-out of Shaft W4 and reinstatement of the area.
What this means for you
We are working closely with local authorities to minimise disruption for communities while carrying out the work safely and efficiently.
Construction traffic: Vehicles will access the site via a designated route along Barncroft Way and Stockheath Lane (Click here for a map). On average, there will be five return trips per day (i.e. to and from the site) by HGVs or our tractor and trailer unit. Wherever possible, journeys will avoid peak times, and there will be no planned vehicle movements during drop-off and pick-up times at the nearby Trosnant Schools.
Temporary access point: During the pipeline works, we need to have a dedicated access point in place to allow construction traffic to enter and leave site safely. The site entrance will be on the western side of Stockheath Lane, north of the turning into the Trosnant Schools site.
Parking: From the start of work on site, approximately 14 metres of Stockheath Lane will require new parking restrictions to allow safe access to the site entrance (see map below). Advance notices and signage in place while restrictions apply. Residential driveways will not be affected.
Footpath diversions: The two public footpaths across Stockheath Meadow will need to be temporarily diverted from Quarter 3 2026 to Quarter 2 2028, and then fully reinstated upon completion. The agreed diversions will be clearly signposted.
Come and meet our team
We will be holding a public drop-in session, as per the details below, when you can meet our team face to face and raise questions or concerns you may have.
- Date: 8 July 2026
- Time: 5pm to 8pm
- Location: Havant Rugby Club, Fraser Road, Bedhampton PO9 3EJ
Get in touch
Of course, in the meantime, we are more than happy to answer your queries, or discuss our planned work with you in further detail.
You can give us your questions or comments via 'Ask us a question' feature below.
You can also contact us by emailing havantthicket@portsmouthwater.co.uk, or by calling 023 9249 9888 (24/7 for urgent issues).
Plus, you can write to us at: Havant Thicket Reservoir project, Portsmouth Water, PO Box 99, West Street, Havant, PO9 1LG.
Ask us a question
Please type in your question or comment, and we'll get back to you with an answer as soon as we can.
If you have an urgent issue related to pipelines construction work, please call us on 02392 499888 (lines open 24/7).
