5 Star Customer Service
Unbeatable Craftsmanship
Fully Insured & Qualified
5 Star Customer Service
Drainage & Sewer Infrastructure Contractors in South Wales
Main sewer installation, manholes, house drainage and SUDS systems delivered across Rhondda Cynon Taf and South Wales.
Rated 5 Stars on Google
Accreditations & Qualifications
Sewer Connections, Drainage Systems & Adoptable Infrastructure
Whether you're connecting a new development to the mains, installing house drainage on an extension, or delivering full SUDS infrastructure for a commercial site, C&M Jones provides reliable drainage solutions across South Wales.
Based in Mountain Ash, we work with developers, contractors and private clients on everything from single property connections to full estate drainage networks — installed to current building regulations, water authority standards and local planning requirements.
With confined spaces training, full CHAS accreditation and Streetworks certification, we have the qualifications and experience to deliver drainage works safely on any site.
Drainage & Sewer Services We Provide
We undertake the full range of drainage and sewer infrastructure works — from initial site connections through to compliant SUDS systems on new developments.
Main sewer installation — adoptable and non-adoptable sewer networks
Manhole installation — including deep manholes and chamber works
Sewer connections — new connections to the public sewer network
House drainage — foul and surface water drainage for new builds and extensions
SUDS systems — sustainable drainage solutions for compliant developments
Surface water drainage — soakaways, attenuation tanks and outfalls
Drainage upgrades — replacement and rerouting of existing systems
Drainage & Sewer Services We Provide
We undertake the full range of drainage and sewer infrastructure works — from initial site connections through to compliant SUDS systems on new developments.
Main sewer installation — adoptable and non-adoptable sewer networks
Manhole installation — including deep manholes and chamber works
Sewer connections — new connections to the public sewer network
House drainage — foul and surface water drainage for new builds and extensions
SUDS systems — sustainable drainage solutions for compliant developments
Surface water drainage — soakaways, attenuation tanks and outfalls
Drainage upgrades — replacement and rerouting of existing systems
Compliant Drainage Built for the Long Term
Drainage failures are expensive — flooded foundations, blocked sewers, failed building inspections and rejected adoption applications all stem from drainage that wasn't installed properly the first time.
That's why every drainage system we install is laid to falls, properly bedded, pressure tested where required, and built to comply with current Building Regulations and water authority adoption standards. We work directly from drainage drawings and coordinate with planners and engineers throughout.
From single property connections to full development drainage networks, we deliver infrastructure that passes inspection, gets adopted, and performs reliably for decades.
Compliant Drainage Built for the Long Term
Drainage failures are expensive — flooded foundations, blocked sewers, failed building inspections and rejected adoption applications all stem from drainage that wasn't installed properly the first time.
That's why every drainage system we install is laid to falls, properly bedded, pressure tested where required, and built to comply with current Building Regulations and water authority adoption standards. We work directly from drainage drawings and coordinate with planners and engineers throughout.
From single property connections to full development drainage networks, we deliver infrastructure that passes inspection, gets adopted, and performs reliably for decades.
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Need drainage or sewer works?
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Groundworks and civil engineering contractors serving Rhondda Cynon Taf and South Wales. Reliable. Accredited. Experienced.
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