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Expert Drainage Solutions in Helston, Cornwall
South West Drainage has been delivering specialist drainage solutions across the UK for over 25 years. Founded by Dave Benton, whose agricultural background provided foundational expertise in groundworks and machinery operation, we specialise in sewage treatment units, septic tanks, and comprehensive drainage systems for residential and commercial clients. As a British Water accredited service engineer, we combine technical proficiency with practical experience to resolve drainage challenges efficiently. Our approach prioritises client needs through free telephone consultations, no-obligation quotes, and nationwide coverage.

Unlike competitors requiring maintenance contracts, we offer flexible servicing tailored to individual requirements while maintaining 24/7 responsiveness for urgent issues. Our reputation for honesty and reliability has been built through consistent project delivery, from small domestic installations to large-scale commercial systems, ensuring regulatory compliance and long-term functionality.
Services
Drainage Installations Drainage Servicing Commercial Drainage Sewage Treatment Units Septic Tanks Pump Stations Cesspits Soak Away Drains
Highlights and features
  • We offer over 25 years of specialist drainage experience
  • Our services cover the entire United Kingdom
  • We provide free telephone advice with no obligation
  • We respond promptly to emergency drainage issues
  • We tailor maintenance programmes to client requirements
Associations and certifications
  • British Water
What people say
Professional from start-to-finish Very competitive quote Travelled quite a long way Trusted hundreds of clients Free phone advice
Services
Drainage Installations
We specialise in complete drainage system installations including sewage treatment units, septic tanks, and soakaway systems. Our engineers ensure compliance with current regulations while optimising system longevity through proper ground assessment and material selection. Every installation receives a comprehensive handover process with maintenance guidance.
Drainage Servicing
Our maintenance programmes prevent system failures through regular inspections and proactive repairs. We service septic tanks, pump stations, and commercial drainage networks without mandatory contract commitments. Our approach identifies potential issues before they escalate, maintaining system efficiency and regulatory compliance across residential and business properties.
Commercial Drainage
We provide tailored drainage solutions for hospitality venues, caravan parks, and commercial developments. Our services include high-capacity sewage treatment units, emergency breakdown response, and compliance assessments. With nationwide coverage, we ensure minimal business disruption through rapid diagnosis and targeted repairs for hotels, restaurants, and holiday parks.
Sewage Treatment Units
We install and maintain modern sewage treatment units for properties not connected to mains drainage. Our British Water accredited engineers ensure system compliance with Environment Agency standards. From single-dwelling units to large commercial systems, we provide complete lifecycle support including servicing, upgrades, and regulatory documentation.
Emergency Repairs
Our rapid response team addresses urgent drainage failures including blocked systems, pump malfunctions, and sewage leaks. We provide immediate telephone diagnosis followed by site attendance using specialist equipment. Emergency services prioritise containment, system restoration, and compliance maintenance for residential and commercial clients across the UK.
People
David Benton
Owner & Lead Engineer
With over 25 years of drainage expertise, David established South West Drainage after gaining agricultural and machinery experience. As a British Water accredited engineer, he oversees all projects ensuring technical excellence and client satisfaction through his practical knowledge of ground conditions and drainage systems.
Questions
What drainage services do you provide?
We install and service sewage treatment units, septic tanks, pump stations, and soakaway systems for residential and commercial properties across the UK.
Do you offer nationwide coverage?
Yes, we operate throughout the UK with our base in Helston, Cornwall. Our team travels to client locations for installations and emergency repairs.
Are your engineers qualified?
Our lead engineer is a British Water accredited service engineer with 25+ years of practical experience in drainage systems and groundworks.
Can you handle commercial drainage needs?
We specialise in commercial drainage for hotels, caravan parks, and restaurants, providing tailored solutions and emergency response services.
Do you provide emergency drainage repairs?
Yes, we offer urgent drainage repair services with immediate telephone diagnosis and rapid site attendance using specialist equipment.
What maintenance options are available?
We provide flexible maintenance programmes without mandatory contracts, including regular inspections and proactive servicing for all drainage systems.