Water well and irrigation system — Nicholls Water Solutions
Water Boreholes

Borehole drilling for water across the South of England

Over 4,000 water boreholes drilled across the South of England since 2003. Reliable supply, lower running costs, full control over your own water — for homes, farms, businesses and developments.

4,000+

Water boreholes drilled

20+

Years drilling experience

600m

Maximum drilling depth

In-house

Design, drilling & service teams

What is a water borehole?

Borehole drilling for water is the process of drilling a well into the natural aquifer beneath your property to provide your own private, reliable water supply — independent of the mains network. A water borehole can provide drinking water, garden and crop irrigation, livestock water, swimming pool top-up, industrial process water and cooling.

Water boreholes are increasingly the choice of homeowners, farms, estates and businesses across the South of England — driven by mains-water bill rises under the PR24 price review, repeated hosepipe bans, and the resilience benefits of having your own supply on tap regardless of what the local water company is doing. See our guide to borehole drilling costs for what affects the price.

Did you know? Switching from mains to a water borehole for 20m³/day reduces your water-related carbon footprint by up to 80% — there's no pumping water from a reservoir miles away, just from the aquifer directly under your land.

What is a deep bore soakaway?

Deep bore soakaways are ideal where traditional soakaways won't work or traditional drainage is too costly. They allow the discharge of storm and surface water into porous geology out of reach of more traditional methods.

They're a perfect solution when there is insufficient room for a crate or herringbone soakaway system, or when the surface geology has low porosity. They can be quickly constructed using advanced technology.

Read more about deep bore soakaways

See the water borehole process

Owner and Director Ben Nicholls talks you through the water borehole process — from initial enquiry to ongoing servicing and maintenance.

Mains supply vs water borehole vs Water as a Service

Three ways to get water to your property. Most homes and small farms own a borehole; commercial sites with high-volume needs often prefer Water as a Service. Here's how they compare.

Mains supplyWater borehole (you own)Water as a Service
ReliabilitySubject to outages, hosepipe bans, restrictionsFully independent, 24/7 supplyFully independent (managed by us)
Running cost£3-£5 per m³ (rising under PR24)Electricity only — typically <£0.30/m³Pay-per-m³ — 20-40% below mains
Upfront cost£0 (mains connection cost separate)£8k-£40k typical install£0 — we own the infrastructure
ControlNone (regulated supplier)Full control of your own supplyPerformance SLA from us
Best forLow usage, urban sites with no outdoor spaceLong-term ownership, rural sitesHigh volume (80m³/day+) without capex

Complete turnkey water borehole solutions

From first site visit to commissioned water on tap, every stage handled by our own in-house teams. Or take individual elements if you have other contractors involved.

1

Design

Our qualified, in-house design team assess your needs, design your project and undertake all technical calculations and drawings. We review the geology and may obtain a geological report or use traditional methods such as dowsing.

2

Drilling & installation

We provide a no-obligation estimate with a detailed project management plan. With our own staff and purpose-built rigs, we undertake the drilling and install all necessary components including pumps, pipework and control systems.

3

Maintenance & servicing

Our dedicated service department provides ongoing monitoring, pump testing, water quality analysis and annual maintenance. We also handle Environment Agency licence requirements and compliance.

Do I need a water abstraction licence?

Any water abstraction above 20 cubic metres per day requires a Water Abstraction Licence from the Environment Agency. Our sister division, Nicholls Licensing & Consulting, handles all regulatory work — from pre-application assessments to full licence applications.

For abstractions under 20m³/day (covering most domestic and many small commercial users), no licence is required, allowing for a faster process. We can advise on which route is best for your situation as part of the free site assessment.

Separately, if your borehole will supply water to anyone outside your own household — tenants, employees, holiday-let guests, food businesses — your local authority's Environmental Health team regulates the supply under the Private Water Supplies Regulations 2016. See our private water supplies & EHO compliance service.

Learn about our licensing services

Water borehole questions, answered

The questions we hear most often before a site visit. Don't see yours? Get in touch — we'll answer before you commit to anything.

What is a water borehole?
A water borehole is a drilled well that draws water directly from the natural aquifer beneath your property — giving you your own private water supply, independent of the mains network. Boreholes typically reach 30-100m depth depending on local geology and can provide drinking water, irrigation, livestock supply, swimming pool top-up, and industrial process water. Modern installations include pumps, treatment and licensing where required, all handled in-house by Nicholls Water.
What is a borehole?
In the UK water-supply context, a borehole is a narrow, drilled hole into the ground used to access an underground water source (an aquifer). The same term is used for ground source heat pump boreholes (which extract heat rather than water) and for deep bore soakaways (which discharge surface water into porous geology). Water boreholes are the most common application — providing private, mains-independent water supply for homes, farms, estates and commercial sites.
How much does borehole drilling cost?
Borehole drilling costs vary by depth, geology, ground conditions, and the components needed (pump, treatment, controls, licensing). For a typical residential water borehole in the South of England, the total project cost — drilling, pump installation, water testing and commissioning — usually runs £8,000-£18,000. Commercial and agricultural systems can range £15,000-£40,000+ depending on volume. Free, written estimates available after a site assessment.
How deep does a water borehole need to be?
Most water boreholes drill to between 30m and 80m, but depth depends on your local geology and where the productive aquifer sits. In chalk areas (Hampshire, parts of Sussex and Kent) productive water is often reached between 30-60m. In clay or greensand areas it can be 100m+. Our largest rig drills to 600m where deeper aquifers need accessing. The free site assessment includes a desk-based geological review to estimate the depth your site will need.
How much does a water borehole cost?
A typical residential water borehole installation ranges from £8,000 to £18,000 depending on depth, geology, pump specification, water treatment requirements and how far the borehole is from the property. Commercial and agricultural systems can be £15,000-£40,000+ depending on volume requirements. We provide free, written estimates after a site assessment so you know the exact cost before committing.
How long does it take to drill a water borehole?
The drilling itself usually takes 1-3 days for a residential borehole. The full project — including geological assessment, site preparation, drilling, pump installation, water testing and commissioning — typically runs 4-8 weeks from first site visit to working water on tap. Larger commercial systems can take longer, particularly if Environment Agency abstraction licensing is required.
Do I need a licence for a private water borehole?
If your abstraction is under 20 cubic metres per day (about enough for a typical household plus a small farm or modest business use), no Environment Agency licence is required. Above 20m³/day, an abstraction licence is required. Our Licensing & Consulting division handles the full application process for clients who need one — included as part of our turnkey service.
Will the water be safe to drink?
Borehole water is naturally filtered through rock and is often very high quality, but it must be tested before potable use. We carry out comprehensive water-quality analysis after drilling and recommend appropriate treatment (filtration, UV, mineral correction) where needed. Most groundwater in the South of England requires only light treatment to meet UK drinking-water standards.
Is my site suitable for a water borehole?
Most rural and semi-rural properties in the South of England are suitable — the underlying geology across most of the region (chalk aquifer, Lower Greensand, Upper Greensand) is well-suited to water boreholes. Suburban and urban sites are usually fine too. The free site assessment includes a desk study using British Geological Survey data and our 4,000+ borehole records to confirm suitability before any work starts.
How much can I save by switching to a water borehole?
Typical savings depend on your current mains usage. A medium-sized commercial site using 20m³/day on mains water would currently pay £15,000-£25,000/year on mains supply (rising under the PR24 price review). A water borehole's running cost is principally electricity for the pump — usually £500-£2,000/year. Payback periods on commercial installs are typically 2-5 years. Residential savings are smaller in absolute terms but typically 60-80% lower than mains.
What ongoing maintenance does a borehole need?
We recommend an annual service — pump efficiency check, water-quality testing, filter replacement, and any treatment-system maintenance. Our in-house service team handles this for clients across the region. A well-maintained borehole pump typically lasts 15-20 years; the borehole itself can last 50+ years.
What about water boreholes for irrigation or commercial use?
Water boreholes scale up cleanly. We've installed irrigation boreholes for golf clubs, sports pitches, agriculture and horticulture; commercial supply boreholes for hotels, schools, hospitals and industrial sites; and high-volume Water as a Service installations for clients who need 80m³/day+. The same in-house design, drilling and servicing team covers every scale.
Do you cover my area?
Our core catchment is the South of England — Sussex, Surrey, Hampshire, Kent, Wiltshire, Dorset, Berkshire, Oxfordshire, Suffolk, Essex and London. We regularly travel further afield (including Devon and the Cotswolds) for larger projects and commercial installations. Send us your postcode and we'll confirm coverage in the same day.

Water boreholes across the South of England

We've completed water borehole projects in every county in the South of England. Click your area for local geology and project examples:

Ready to discuss a water borehole for your property?

Free site assessment and written estimate — geology desk study, depth estimate and full installation cost before any work commits.

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