Cascadia Water are specialists in new water main installation and self-lay connections for residential properties, commercial developments and new-build projects across London and the Home Counties. Our WaterSafe-approved engineers deliver compliant, efficient and cost-effective solutions to get your property connected to the mains supply quickly and with minimal disruption.
New Water Main Installation & Self-Lay Connections
Why Choose Cascadia Water for New Water Main Installations?
Installing a new water main is a critical step in any new build or property upgrade. Choosing the right contractor ensures your water supply is safe, reliable and compliant with local regulations. Cascadia Water provides:
- Fully qualified, WaterSafe-approved engineers
- Experience managing permits and local authority requirements
- Minimal surface disruption using trenchless technology
- Full project management from initial consultation to commissioning
Our Installation Process
We handle every stage of the new water main connection, including:
- Survey and Planning – assessing your site and designing a compliant solution
- Permitting & Liaison – working with local water authorities and utility companies
- Installation – using efficient trenchless pipe moling to reduce disruption
- Testing & Commissioning – ensuring your new connection is safe and fully operational
Self-Lay Water Connections for Developers
For developers looking for an efficient and cost-effective way to connect new properties to the mains, our self-lay water main service offers a compliant alternative to traditional connections. We manage all aspects of the self-lay process, from initial consultation through to final approval, giving you control over project timescales and costs.
Trenchless Pipe Moling
Our trenchless moling technology allows us to install new water mains without the need for open trenches, reducing reinstatement costs and minimising disruption. This is ideal for residential driveways, landscaped areas and busy commercial sites.
Experience You Can Trust
Cascadia Water has delivered new water main installations and connections for a wide range of clients – from heritage properties to commercial sites and schools.
- Windsor Castle – installed a new water main to serve Cambridge Lodge using trenchless moling technology, protecting landscaped gardens and historical features.
- School Developments in London & the Home Counties – delivering water and drainage connections for new builds and refurbishments under tight deadlines.
- Access Self Storage – providing long-term drainage and water solutions across multiple sites, ensuring uninterrupted operations.
Areas We Cover
We operate across London and the surrounding counties, including: Kent, Surrey, Essex, Hertfordshire, Buckinghamshire and Bedfordshire.
Frequently Asked Questions
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Do I need planning permission for a new water main connection?
Typically, you don’t need planning permission to connect to an existing water main. However, new installations often require coordination with your local water authority and may need permits. We manage this process for you.
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What is a self-lay water main connection?
A self-lay connection allows developers or property owners to arrange their own installation of a new water main, rather than using the local water company. This can reduce costs and speed up projects. Cascadia Water is an accredited self-lay provider, meaning we can install the main to industry standards and hand it over to the local water company for adoption.
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Can you replace lead pipes as part of a new installation?
Yes. If your property still uses lead pipework, we can upgrade your supply as part of the installation, ensuring a safer and more reliable water supply.
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How long does installation take?
The timescale depends on site conditions and whether permits are required, but most projects can be completed within a few days once approvals are in place.
Working with Cascadia Water?
When you work with us at Cascadia Water, you’ll be working with a team of highly skilled and experienced local drainage and watermain specialists, dedicated to exceptionally high standards of work, and a commitment to providing outstanding customer service.
Based in Ruislip, just outside Central London, we are an independent, family owned watermain and drainage company who are committed and proud to deliver excellence to our clients.
Expertise
At Cascadia Water, we have over thirty years of industry experience, and offer a wealth of valuable expertise in the diagnosis and resolution of a wide range of common, and unique drainage and watermain issues.
Reliability
As a water industry approved drainage and watermain specialist, with Cascadia Water, you’ll have the professional reliability you need to ensure issues are resolved quickly and within budget.
Compliance & Safety
With credentials including SafeContractor, WaterSafe, SMAS, Constructionline, and the Water Industry Approved Plumbing Scheme (WIAPS), when working with Cascadia Water, Compliance and Safety will always be strictly adhered to.
Upfront Communication
Whatever drainage or watermain challenge you’re facing, at Cascadia Water, we always provide upfront and honest communication to help to drive an issue forward.
New Water Main Installation & Self-Lay Connection Experts
- New Water Main Installation
- Self-Lay Water Connections
- Trenchless Pipe Moling
- Lead Pipe Replacement
- Water Supply Connections