M Thomas Water Services

M Thomas Water Services: trenchless water mains work from Cardiff

M Thomas Water Services is a family-run water services company based in Cardiff, South Wales. It describes itself as approved by Welsh Water as qualified engineers and is a member of the Water Industry Approved Ground Worker Scheme (WIAPS). The firm works on water and drainage pipe replacement for both domestic and commercial customers, handling pipes of any diameter, from the largest commercial mains to the small supply pipes serving individual homes.

Find and fix, replacement and common supply work

The company's core services are grouped into four areas. The find and fix service locates burst water pipes, isolates the problem and repairs the leak. Water mains replacement uses moling technology, which the firm presents as a more cost-effective route than conventional excavation. Common supply work addresses shared pipes that cause poor pressure through increased demand or deterioration. A drainage line covers blocked drains, full CCTV surveys and larger-scale drainage solutions.

Moling as an alternative to digging

Much of the company's offer rests on trenchless technology. Pneumatic moling units are driven beneath driveways, lawns and patios, so the surface does not need to be opened up. The firm states that this approach suits new water supply installation under gardens, driveways and roads and reduces disruption and environmental impact compared with trenches. It also cites expertise in reinstating tarmac, concrete and block paving after works.

Lead pipes and private supply responsibility

The site explains that homeowners are responsible for maintaining the supply pipe that brings water from the main in the street into the property. It notes that homes built before 1970 may still have lead supply pipes, which it links to health risks, and advises checking the pipe running to the stop tap, often under the kitchen sink or in a downstairs toilet, since lead is soft and easily marked. Where lead is present, the company recommends replacement and points out that many households may be eligible for the lead and common supply pipe replacement scheme. It also notes that modern MDPE supply pipes deliver purer, better-quality drinking water, and that leaks from underground pipes waste water and can damage property.

Accreditations and stated credentials

• WIAPS-approved groundworkers
• Water Safe registered
• CHAS accredited contractors
• Approved by Welsh Water as qualified engineers

The company also presents its trenchless methods as faster, cleaner and cheaper than traditional trenching, and emphasises a friendly service throughout with minimal disruption.