Private Water Supplies
Borehole, Spring & Well Water Supplies Explained
A private water supply provides water independently of the public mains network, typically from a borehole, natural spring or well.
Thousands of homes, farms, estates and businesses across the UK rely on private water supplies for their everyday water needs.
Discover how these systems work, the different types of water sources, common water quality problems and what is involved in maintaining a safe, reliable supply.
What Is a Private Water Supply?
A private water supply is a water source that operates independently of the public mains network. Instead of receiving water from a water company, properties obtain their water from natural sources such as underground aquifers, springs, wells or surface water.
Private water supplies are commonly found in rural homes, farms, country estates, holiday accommodation and commercial premises where mains water is unavailable or an independent supply is preferred.
Depending on the source and property requirements, a private water supply may include collection or abstraction equipment, pumps, water storage tanks, filtration systems, pressure controls and UV disinfection.
Every supply is different. Water quality, available flow, seasonal conditions and the number of properties served all influence how the system should be designed, treated and maintained.
Boreholes • Natural Springs • Wells • Surface Water • Water Treatment • Supply Maintenance
Borehole Water Supplies
Boreholes access groundwater stored within underground rock formations and aquifers. Water is typically brought to the surface using a submersible pump before being stored, pressurised and treated.
Water quality and available yield vary depending on local geology and borehole construction.
Spring Water Supplies
Natural springs occur where groundwater reaches the surface. Water is collected through a suitable spring collection system and may be gravity-fed or pumped to storage and treatment equipment.
Spring flow and water quality can change with rainfall, seasonal conditions and surrounding land use.
Surface Water Supplies
Traditional wells draw groundwater from relatively shallow depths, while surface water supplies may collect water from lakes, rivers or reservoirs.
These sources can be particularly vulnerable to changes in water quality and contamination, making appropriate testing, protection and treatment essential.
How Does a Private Water Supply Work?
Every private water supply is different, but most systems follow the same basic principles: water is collected from a natural source, delivered to the property and treated where necessary to make it suitable for its intended use.
Water Collection & Abstraction
Water is obtained from a borehole, natural spring, well or surface water source. Depending on the location and system design, water may be pumped or flow naturally under gravity.
Storage & Water Pressure
Water may be stored in a suitable tank before being distributed around the property. Pumps, pressure vessels and control systems help maintain a consistent and reliable water supply.
Water Treatment & Disinfection
Depending on the results of water testing, treatment may be required to address bacteria, iron, manganese, acidity, hardness, turbidity or other water quality concerns. Filtration and UV disinfection are commonly used where appropriate.
Ongoing Maintenance
Private water supplies require appropriate inspection, servicing and water quality monitoring to help maintain reliable operation and protect water quality.
Water Sources • Pumps & Pressure • Water Storage • Filtration • UV Disinfection • Servicing
JN Environmental is headquartered in Bury, Greater Manchester, providing specialist private water supply services throughout England, Wales and southern Scotland.
Need Help With Your Private Water Supply?
Whether you're experiencing water quality problems, low pressure or a complete loss of supply, our experienced team is here to help.
Common Private Water Supply Problems
Private water supplies can contain naturally occurring minerals, sediment, organic matter and microbiological contamination. Below are some of the most common water quality problems we see in borehole, spring and other private water sources.
Iron (Fe)
Iron (Fe)
DWI limit: 200 µg/L
Iron is commonly found in groundwater and can cause orange/brown staining, metallic taste and discolouration. It can also foul pipework, filters and other water treatment equipment.
Typical treatment: Oxidation and filtration.
Manganese (Mn)
Manganese (Mn)
DWI limit: 50 µg/L
Manganese occurs naturally in groundwater and can cause black staining, dark deposits and discolouration. It can also build up inside pipework, tanks and treatment equipment.
Typical treatment: Oxidation, pH control and filtration.
Acidity (Low pH)
Acidity / Low pH
DWI range: 6.5–9.5 pH
Low pH means the water is acidic and may become corrosive to copper pipework, fittings and equipment. It can also increase the risk of metals dissolving into the water.
Typical treatment:
High-grade pH correction media.
Turbidity
Turbidity
DWI limit: 4 NTU
Turbidity is cloudiness caused by suspended sediment, minerals or fine particles within the water. High turbidity can also reduce the effectiveness of downstream UV disinfection.
Typical treatment:
Sediment or multimedia filtration.
Hardness (Ca / Mg)
Hardness (Ca / Mg)
No statutory maximum limit
Hardness is mainly caused by dissolved calcium and magnesium in the water. It can create limescale on taps, heating elements, pipework and other water-using equipment.
Typical treatment:
Ion-exchange water softening.
Arsenic (As)
Arsenic (As)
DWI limit:
10 µg/L
Arsenic is a naturally occurring element that can enter groundwater through certain rocks and mineral deposits. It may be present even when the water appears completely clear.
Typical treatment:
Specialist media or reverse osmosis.
Nitrate
(NO₃)
Nitrate (NO₃)
DWI limit: 50 mg/L
Nitrate can occur naturally but is often associated with agriculture & fertilisers It is especially relevant to boreholes, wells and shallow groundwater supplies.
Typical treatment:
Ion exchange or reverse osmosis.
Bacteria
Bacteria
DWI limit: Zero
Bacteria can enter private water supplies through surface water, drainage, livestock activity or poorly protected sources. Waterborne bacteria can cause severe illness.
Typical treatment:
Filtration & UV disinfection, chemical dosing.
Sediment
Sediment
DWI Limit:
4NTU
Sediment can include sand, silt, clay and other fine particles entering the water from the source. It can cause cloudiness, block filters and interfere with downstream treatment equipment.
Typical treatment:
Sediment or multimedia filtration.
Colour
Colour
DWI limit: 20 mg/L Pt-Co
Colour may be caused by iron, manganese or naturally occurring organic material in the source water. It can affect appearance, taste and the performance of UV disinfection contributing to bacteria failures.
Typical treatment:
Carbon, resin or specialist filtration.
Tannins
Tannins
No single standalone limit
Tannins are naturally occurring organic compounds released from vegetation, peat and decaying plant material. They can give spring or surface water a yellow or tea-coloured appearance.
Typical treatment:
Tannin resin or activated carbon.
Organic Matter
Organic Matter
No single standalone limit
Organic matter can enter water from soil, vegetation, peat and decaying natural material around the source. It can affect colour, taste, odour and the performance of treatment systems.
Typical treatment:
Carbon or specialist organic removal.
Owning & Maintaining a Private Water Supply
Unlike mains water, private water supplies are the responsibility of their owners and, in some circumstances, other parties involved in managing or providing the supply. Maintaining a safe and reliable supply involves understanding water quality, protecting the source, maintaining equipment and meeting applicable private water supply regulations.
Water Quality Testing
Regular water testing helps identify bacteria, naturally occurring minerals and changes in water quality. Understanding these results allows appropriate treatment decisions and helps maintain a safe, reliable private water supply.
Servicing & Maintenance
Regular servicing helps keep pumps, filtration systems, UV units and pressure equipment operating reliably. Planned maintenance can identify developing faults, improve system performance and reduce the likelihood of unexpected breakdowns.
Source Protection & Storage
Protecting boreholes, springs, wells and storage tanks helps prevent contamination entering the water supply. Routine inspections and suitable maintenance can reduce risks from surface water, damaged infrastructure and environmental conditions.
Regulations & Responsibilities
Private water supply owners have responsibilities for maintaining water quality and managing their systems.
Applicable regulations and local authority requirements depend on the supply type, location and how water is used.
Why Choose JN Environmental?
JN Environmental provides complete private water supply solutions, from water testing and filtration to pumps, storage, servicing and emergency repairs. Our experienced engineers understand how every part of a private water system works together, delivering reliable solutions across England, Wales & Southern Scotland.
What Our Customers Say
★★★★★ 5 Star Rated on Google
Trusted by homeowners, farms, estates and commercial customers across the UK. Discover why customers choose JN Environmental for private water supply installations, servicing, maintenance and emergency repairs.
★★★★★
"Living rurally finding dependable service can a challenge, but Jack and his team have been outstanding. They are incredibly prompt reliable, knowledgeable and efficient whenever I have questions or need assistance with my Private Water Supply.
Their annual servicing is always thorough and hassle free. I highly recommend them to anyone needing top tier service!"
- James L, Northumberland
★★★★★
"Jn Enviromental have been amazing and a pleasure to work with
always availble and responsive and always ready to help
honestly I couldn't recommend enough.
Thank you Jack & the team you have been more than 5 stars"
- Jerry H, Cumbria
★★★★★
"I found JN Environmental after being messed around by a different installer.
Right from the initial quote to completion Jack was always open and honest and gave advice and provided options. All costing was given and everything was itemised.
Jack and his team are not only thorough but have pride in their work. I would recommend JN Environmental to anyone who has private water."
- Mike W, Lancashire
★★★★★
"Fabulous and professional with a wealth of experience! We have tried numerous companies to date and JN environments were the only company that could resolve our problems with our water supply! A huge thanks and see you at the next service!"
- Trevor B, Northumberland
Private Water Supply Engineers Across England, Wales & Southern Scotland
JN Environmental provides specialist private water supply services for homes, farms, estates and commercial properties across England, Wales and southern Scotland.
Our experienced engineers work with borehole, spring and surface water supplies, providing water testing, filtration design and installation, servicing, maintenance, pump repairs, storage solutions and UV disinfection.
With fully equipped service vehicles, extensive stock and dedicated technical support, we can respond quickly to both planned works and urgent breakdowns.
Lancashire • Greater Manchester • Cumbria • Cheshire • Yorkshire • Derbyshire • Staffordshire • Shropshire • Northumberland • Wales • Southern Scotland
Unsure whether we cover your location? Contact our team to discuss your private water supply requirements and arrange a site survey.
Recent Private Water Supply Projects
From domestic borehole and spring water supplies to larger commercial installations, JN Environmental designs and installs complete treatment systems tailored to water quality, source conditions and individual site requirements.
Borehole Water Treatment Installation
Customer: Private
Property Type: Multiple Houses
Description: A borehole-fed system supplying three residential properties. The treatment was designed to correct acidic pH and remove iron, manganese and bacteria, providing a reliable treated water supply across all three homes.
Spring Water Treatment Installation
Customer: Private
Property Type: House
Description: A spring-fed system designed to treat acidic pH and bacteria. A 3,000 litre storage tank and variable-speed booster pump provide reliable treated water, stable pressure and consistent flow throughout the property.
Commercial Borehole Water Treatment
Customer: Plant Hire Operator
Property Type: Plant Hire Depot
Description: A commercial borehole-fed system designed to correct acidic pH and remove iron and turbidity. The upgraded treatment now provides a reliable supply of cleaner water for the vehicle wash station and site use.
Private Water Supply FAQs
Answers to some of the most common questions we’re asked about private water supply installation, servicing, treatment and repairs.
Can you service a private water supply system installed by another company?
Yes. JN Environmental services, repairs, upgrades and maintains existing private water supply systems regardless of who originally installed them.
Do you install complete borehole and spring water systems?
Yes. We design and install complete private water supply systems including filtration, pumps, controls, storage, UV treatment and associated equipment.
What areas do you cover?
Our Head Office is in Bury, Greater Manchester, with engineers covering England, Wales and southern Scotland, including the Scottish Borders and Dumfries & Galloway.
Do you carry out water testing?
Yes. We can arrange water sampling and laboratory analysis to investigate water quality, identify treatment requirements and verify system performance.
What water quality problems can you treat?
We design treatment for issues including iron, manganese, low pH, turbidity, colour, tannins, hardness, taste and odour, and microbiological contamination.
Do you work on commercial private water supplies?
Yes. We support domestic and commercial systems including farms, estates, holiday parks, hospitality sites, industrial premises and multi-property supplies.
Need Help With Your Private Water Supply?
Whether you need water testing, a new filtration system, routine servicing or urgent repairs, our experienced team is here to help. Call 0161 523 6357 or request a quote today.