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Nicholls
Drilling equipment on a Nicholls Water lorry for water and GSHP systems
87+ projects in East Sussex

Water Boreholes & Ground Source Heat Pumps in East Sussex

Over 87 projects completed across East Sussex. Free site assessments and no-obligation estimates.

East Sussex is a key operational area for Nicholls with 87 completed projects. The county's varied geology — from the chalk of the South Downs through Wealden Clay to the Hastings Beds — means every project requires careful site assessment. We have strong experience around Lewes, Uckfield, Crowborough, Wadhurst and the Rye area.

Services available in East Sussex

Full range of water, ground source and licensing services — delivered by our in-house team.

Water Boreholes

Private water supply across East Sussex's varied geology.

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Ground Source Heat Pumps

GSHP installations across the South Downs and Weald.

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Deep Bore Soakaways

Drainage solutions in East Sussex's challenging clay geology.

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Servicing & Maintenance

Ongoing support across East Sussex.

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Water Licensing

EA abstraction and discharge licences — UK-wide.

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Local geology in East Sussex

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East Sussex geology is dominated by the chalk South Downs in the south and the Wealden Clay and Hastings Beds in the High Weald. The Lewes and Ringmer area (our most active zone) sits at the chalk/clay boundary where conditions can change over short distances. The High Weald around Uckfield, Crowborough and Wadhurst requires deeper drilling through clay into underlying sandstone. Water quality is variable — iron and manganese treatment is frequently required in clay areas.

Every site is different. A desk-based geological assessment is always the starting point for any project.

Our projects in East Sussex

4,000+ boreholes drilled across the UK

Our interactive project map loads when it's ready. In the meantime, here's where we've been working — across West Sussex (227 projects), Surrey (196), Hampshire (111), East Sussex (87), Kent (70) and across the wider South of England, including Wiltshire and Dorset.

Water boreholes · Ground source heat pumps · Deep bore soakaways · Over 1,500 completed projects since 2003.

Case studies in East Sussex

A selection of projects we've completed across East Sussex.

25 Deep Bore Soakaways at Sussex University
Deep Bore SoakawayEducation

25 Deep Bore Soakaways at Sussex University

Nicholls were contacted by Adenstar Developments to install 25 deep bore soakaways at Sussex University as part of their campus development programme.

Water Borehole at Royal Ashdown Forest Golf Club
Water BoreholeCommercial

Water Borehole at Royal Ashdown Forest Golf Club

Nicholls installed and commissioned a water borehole system for Royal Ashdown Forest Golf Club in East Sussex. The borehole enables the club to irrigate using their own water supply rather than tre...

Ground Source Heat Pump for East Sussex School
Closed-loop GSHPEducation

Ground Source Heat Pump for East Sussex School

Nicholls designed and installed a closed-loop GSHP system for a school in East Sussex. The installation was planned to minimise disruption to school activities, with drilling and major works undert...

Water Borehole for Country Estate, South of Lewes
Water BoreholeResidential

Water Borehole for Country Estate, South of Lewes

Nicholls designed, drilled and installed a water borehole system for a country estate south of Lewes in East Sussex. The borehole provides a reliable private water supply for the property and its e...

Water Borehole at Ashburnham Place, East Sussex
Water BoreholeCommercial

Water Borehole at Ashburnham Place, East Sussex

Nicholls installed a water borehole system at Ashburnham Place in East Sussex, a well-known conference and retreat centre. The borehole provides a reliable and cost-effective water supply for the f...

GSHP for Self Build Project in East Sussex
Closed-loop GSHPResidential

GSHP for Self Build Project in East Sussex

Nicholls were engaged at the design stage of this self-build project in East Sussex to incorporate a closed-loop ground source heat pump system into the new home.

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Areas we cover in East Sussex

We cover all of East Sussex including:

LewesUckfieldCrowboroughWadhurstRyeHeathfieldBattleRingmerEast Grinstead

Local landing pages

Detailed pages for towns we work in across East Sussex:

LewesUckfieldCrowboroughWadhurstRyeHeathfieldBattleRingmerEast GrinsteadBrighton

Not sure if we cover your area? Complete our enquiry form and we'll confirm.

Other areas we cover

West Sussex (227)Surrey (196)Hampshire (111)Kent (70)Buckinghamshire (39)Essex (38)Hertfordshire (28)London (80)Oxfordshire (18)Wiltshire (12)Suffolk (8)Cornwall (3)Somerset (4)

Featured for East Sussex

Water security in East Sussex

Hosepipe bans, PR24 bill rises, water-stressed designation. See why more East Sussex businesses, estates and farms are switching to private water boreholes — and what it costs.

Read the East Sussex water security guide →

Common questions about East Sussex

Quick answers to the questions we hear most often from East Sussex residential, commercial and agricultural clients.

How deep does a borehole need to be in East Sussex?
East Sussex geology splits broadly between the chalk of the South Downs in the south and the Hastings Beds / Wealden Clay of the High Weald in the north. Chalk-area boreholes (Lewes, Ringmer, the Downs villages) reach productive water at 30-80m. High Weald boreholes (Uckfield, Crowborough, Wadhurst) typically need 80-130m through clay to the underlying sandstone aquifer. We do a desk-based geological assessment using BGS data and our 87+ East Sussex project records before any drill date is set.
How much does borehole drilling in East Sussex cost?
Residential water boreholes in East Sussex typically cost £10,000-£20,000 depending on depth and treatment requirements. High Weald clay-area boreholes (Uckfield, Crowborough, Wadhurst) often need iron and manganese treatment which adds to the install cost. Chalk-area boreholes (Lewes, Ringmer) generally need lighter treatment. Commercial sites £20,000-£60,000+. Fixed written estimate after a free site assessment.
Will a ground source heat pump work in the East Sussex Weald?
Yes — particularly well. The Wealden Clay of the High Weald is excellent territory for closed-loop GSHP: stable ground temperature, predictable thermal conductivity, and the rural / semi-rural property mix means most sites have space for borehole arrays. We've completed many GSHP installations across Crowborough, Uckfield, Wadhurst and the Hurst Green area. MCS certified; BUS grant handled as part of the installation.
What about private water supply in East Sussex?
Strong territory. The South Downs chalk in the south of the county and the deeper Hastings Beds sandstone in the High Weald both support reliable private water supplies. We've installed water boreholes from country estates south of Lewes to working farms in the Crowborough area. Properties using more than 20m³/day need an EA abstraction licence, which our in-house Licensing & Consulting team handles.
Why is East Sussex prone to water supply issues?
East Sussex is supplied largely by South East Water, whose network was under a 202-day Temporary Use Ban from July 2025 to February 2026 (the longest in regional memory) plus repeated 2022-2024 hosepipe restrictions. The county is in the EA's official 'serious water stress' designation. We've put together a guide to water security for Kent and East Sussex commercial sites — see /water-security-kent-sussex for the detail.
Why Nicholls for boreholes and GSHP in East Sussex?
We've completed 87+ projects across the county, with concentrations around Lewes, Uckfield, Crowborough, Wadhurst and the Rye / Hastings corridor. We design, drill, license, install and service in-house — no subcontracting the technical work. The East Sussex geology is genuinely varied (chalk / clay / Hastings Beds) and our local project records mean we can usually predict drill depth and water quality before mobilising the rig.

Ready to discuss your East Sussex project?

Request a free, no-obligation site assessment. We'll review your geology, assess your needs and provide an accurate written estimate.

Request a Site Assessment