External Water Mains Installation London — Domestic & Commercial Specialists

Looking for New Water Supply Connection in London?

JD Leak Detection provide complete external water mains installation and replacement services across London. Whether you need a new mains connection installed, an existing water main replaced, or emergency mains repair work, our specialist team delivers compliant, long-lasting results with minimal disruption.

We work on both domestic and commercial water mains, and our trenchless moling capability makes us particularly well-suited to urban London environments where excavation would cause significant disruption.

External Water Mains Services

Domestic water main replacement: Replace old, leaking or failing supply mains to residential properties across London.

New water mains installation: Install new water mains for new builds, conversions and development projects.

Commercial water mains: Mains replacement and installation for commercial premises, offices, retail and mixed-use developments.

Emergency mains repair: Rapid response to burst mains, sudden loss of supply and major external leaks.

Mains upsizing: Where an existing main is undersized for current or planned water demand, we replace with appropriately sized MDPE pipework.

Trenchless Water Mains Installation

Our preferred method for water mains installation in London is impact moling — a trenchless technique that drives new pipework underground between two small excavation pits. For London properties, this is transformative:

• No trenches dug across your driveway, path or garden
• Works equally well under roads, pathways and established landscaping
• Typically completed in one day — far faster than open-cut methods
• Dramatically reduced reinstatement costs
• Minimal disruption to residents, businesses and neighbours

Compliance and Certification

All external water mains installation and replacement work is carried out in full compliance with the Water Supply (Water Fittings) Regulations 1999 and current water industry standards. As WaterSafe and WIAPS approved contractors, we certify all work ourselves — no third-party open-trench inspection required for Thames Water sign-off.