Our services

We offer a complete range of septic tank services, including:

• Septic tank installation – tailored solutions for new and replacement tanks.
• Routine emptying and de-sludging – keeping systems operating smoothly and preventing blockages.
• Cleaning and inspections – professional checks to ensure compliance and long-lasting performance.
• Maintenance and repairs – addressing issues quickly to avoid overflows or system failures.

All work is carried out by skilled engineers using modern equipment, ensuring reliability and long-term performance.

Installation process

Our septic tank installation process is carefully planned from start to finish:

• Site assessment and design – evaluating soil, property, and wastewater requirements to determine the correct tank type and size.
• Layout planning – designing the tank, drainage field, and pipework to meet all local and environmental regulations.
• Excavation and installation – preparing the site, installing the tank, connecting drainage, and testing the system.
• Handover and guidance – ensuring the system is fully operational and providing advice for ongoing care.

Who we work with

Our septic tank services are trusted by:

• Domestic homeowners and rural properties
• Commercial sites and businesses

Learn more about the sectors we serve [link to dedicated sectors page].

Why choose Shanahan Contracting Ltd

• Experienced, local engineers with hands-on expertise
• Fully licensed, insured, and compliant with environmental regulations
• Complete, end-to-end service for installation, maintenance, and emptying
• Reliable solutions tailored to your property or business

Need a septic tank installed or serviced? Contact Shanahan Contracting Ltd today to discuss your requirements or request a site visit.

Request a quote for Septic tank installation & servicing

• "Thank you, James, for responding to our emergency so quickly. Michael, your operator, was with us within two hours and resolved the issue in a very professional and friendly manner. A fantastic service and we will certainly be using Shanahan in the future."

  John & Cherryl - Welham Green

• “Shanahan’s has taken care of all our drain cleansing, jetting & repairs for over 10 years, also assisting us with any groundworks we need. They always provide a prompt & professional service. The teams knowledge of our site pays dividends & their experience helps to keep the centre’s complex drainage network running”

  Jack Garden Square Shopping Centre - Letchworth

• "The guys at Shanahan are great. They are friendly, knowledgeable and professional. A special shout out to Michael for his no-fuss attitude, who gets the job done quickly and professionally without any fuss. Would definitely recommend."

  Anthony - Hitchin