GWG Watermains
Rainwater Harvesting. GWG Watermains has been vetted and approved by TrustATrader. Covering Hertfordshire, Bedfordshire, Cambridgeshire, Essex and surrounding areas.
Membership number TT29099
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Register GuaranteeAbout GWG Watermains, Letchworth Garden City
GWG Watermains is approved Water Regs UK underground water main repair and replacements trenchless moling contractor and leakage detection specialist for replacing and repairing water supply pipes, water mains and undertaking lead renewal work.
Our highly motivated, customer orientated team of engineers have been involved with the water industry for over 25 years. We are based in Hertfordshire and cover Hertfordshire, Bedfordshire, Cambridgeshire, Essex and surrounding areas.
GWG Watermains has been involved with laying and maintaining miles of different types of water pipe of various sizes and materials, from large diameter pipes to the supply pipe that connects to your property. Our engineers have gained a considerable amount of expertise in laying and repairing water supply pipes. Highly qualified and with expert knowledge, they work efficiently and effectively providing complete peace of mind to our customers.
For added peace of mind GWG Watermains are approved contractors for:
Water Industry Approved Plumbers Scheme - GWG Water Main Services
Construction Skills Certification Scheme - SHEA Water
We can provide the following services:
- Find & Fix
- Water Mains Replacement
- Leak Detection & Pipe Tracing
- Common Supply Work
- Mains Laying and Diversions
- Moling (Trenchless Technologies)
- Full Site Surveys
We provide free non-obligatory quotes and estimates.
Please contact us to discuss your requirements or for free professional, friendly and helpful advice. We look forward to hearing from you or to find out more about GWG Watermains please look at our website
Don’t forget to mention Trustatrader when calling.
Photo gallery
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- Insuduct riser box installation
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- New supply into property using insuduct riser box
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- Leakage detection
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- Underground leakage location
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- Leakage detection works using acoustic ground mic
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- New external boundary box stop tap and new supply into house
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- Concrete reinstatement after new mains pipe laid
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- Impact moling under block driveway
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- Moling in new pipe work to meet water industry specifications
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- New supply pipe breakthrough into property using ducting
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- Trace cabling existing mains supply to locate leak
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- 4 x new 25mm mdpe supply’s laid for 4 new flats
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- 4 new supply’s laid ready for local water authority connection.
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- Leak in front garden running into public footpath
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- Leaking supply excavated
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- Leaking lead supply pioe
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- Repair made to leaking pipe work
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- Old rotten leaking pipe work cut out from under front garden
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- New blue mdpe poly pipe laid to kitchen with new stop tap and connection made to existing plumbing
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- New mains pipe connection to existing boundary box stop tap
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- New supply pipe laid to correct depths
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- New supply being laid using impact moling
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- New supply pipe breakthrough into property meeting local water authority specification
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- New rising main connection with new internal stop tap under kitchen sink
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- Verge and blocks reinstatement after excavation
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- Concrete reinstatement after excavation
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- Tracing and locating water supply pipe using trace cable
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- Moling new supply to bypass underground leak
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- Impact trenches moling work
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- Impact moling new supply pipe across rear garden
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- Non operable stop tap excavated for replacement
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- Stop tap and tee piece section cut out for replacement
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- New boundary box stop tap and tee piece section installed
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- Leak under crazy paving driveway
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- Leak excavated and found
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- Leak repaired on galvanised iron supply pipe
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- Leak on supply pipe feeding ground floor flat
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- Leaking black alkathene supply pipe
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- Repair made to leaking alkathene supply pipe
GWG Watermains
- Identification checked
- Company address verified
- Customer references checked
- Agreed to TrustATrader's high standards
- Agreed to complaints procedure
Insurance details
| Provider | Simply Business Insurance |
|---|---|
| Verified | 10th June 2025 |
Hertfordshire
Qualifications
- Water Industry Approved Plumbers Scheme - GWG Water Main Services
- Construction Skills Certification Scheme - SHEA Water
Reviews (28)
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Average rating: 5.0 out of 5
Review by Brenda Brown
on 5th June 2025
Brenda Brown - Image 1 "Re routing of water supply pipe carried out quickly, efficiently and cleanly. Reinstatement of garden border and paving excellent."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Maria
on 2nd June 2025
"Would highly recommend. Gareth and Jason completed the job with no hassle at all. He gave a clear quote knew exactly what he'd have to do. Very helpful and very tidy work too."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Marlene
on 24th May 2025
Marlene - Image 1 "Great job done with really excellent customer service. Would thoroughly recommend GWG."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Joe McCormick
on 1st May 2025
"Hard working, fair price and great to deal with. They relaid our mains pipe very well and we'd use them again. Would recommend."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
