Civil Engineering Drainage & Sewer Services

what we do

Exjet provides a complete range of civil engineering, drainage and sewer services for commercial clients, councils, and water authorities. With in-house engineers, CAD technicians, and modern plant and equipment, we provide reliable design-and-build solutions across Devon, Cornwall, Somerset, and Dorset. From new connections to major infrastructure projects, we utilise specialist knowledge and proven methods to ensure sewer networks function effectively.

Comprehensive Sewer Engineering & Design

Our team combines technical skill with practical experience to deliver high-quality results. As a trusted sewer engineering partner, we undertake projects of all sizes, ranging from small enabling works to extensive drainage infrastructure. By integrating CAD support with field expertise, Exjet provides accurate planning, detailed drawings, and build programmes. This approach ensures that every element of a project, from design through to construction, meets the required technical and regulatory standards.

Core Services & Infrastructure

New Sewer Connections & Diversions

Exjet specialises in designing and installing new public sewer connections and diversions, delivering safe and compliant solutions for developers, businesses, and local authorities. Where required, we also carry out sewer sealing to maintain watertight systems and ensure long-term performance.

Sewer Repair, Renovation & Trenchless Techniques

Where networks have deteriorated, Exjet undertakes sewer renovation and repair. Our methods include trenchless lining and patch repairs to restore integrity without excavation, as well as traditional open-cut techniques when necessary. These services offer cost-effective solutions for repairing sewer pipes while minimising disruption to surrounding infrastructure.

Civil Drainage Systems & SuDS

Exjet designs and installs drainage systems to effectively manage surface and foul water. This includes soakaways, sustainable drainage systems (SuDS), and flood alleviation schemes that help protect property and infrastructure from excess water.

Pumping Stations, Interceptors & Treatment Plants

Our civil engineering team provides a comprehensive range of infrastructure works, including pumping stations, interceptors, septic tanks, and package treatment plants. These installations support both new developments and upgrades to existing systems, ensuring reliable wastewater management across a range of conditions.

Reactive & Enabling Works

Alongside planned projects, we deliver enabling works and reactive repairs. Our supervisors are trained to New Roads and Street Works Act (NRSWA) standards, allowing us to manage excavation, reinstatement, and maintenance safely within public highways under approved traffic management systems.

Technical Capabilities & Scale

Our civil and sewer engineering services encompass projects of various sizes and complexities. Equipped with modern tools, in-house design teams, and experienced engineers, we handle everything from local drainage schemes to major commercial contracts. Each project is individually evaluated, with customised solutions developed to ensure compliance, efficiency, and lasting reliability.

Accredited & Qualified Teams

Our engineers and site staff hold recognised industry accreditations, including Constructionline Gold, SafeContractor, UKAS, Trading Standards, SMAS, CSCS, and FSB. All site teams are trained to NRSWA Supervisor standards to ensure work in public areas is carried out safely and to specification. These accreditations reflect our ongoing commitment to maintaining safety, quality, and compliance across every project we undertake.

Working with Councils, Authorities & Developers

We have extensive experience working with local councils, utilities, and private developers, and are approved by water authorities and sewage companies across the region. Our projects range from sewer diversions and new connections to complete sewer infrastructure packages. Serving as a single-source provider, we manage projects from initial estimation and design through to construction, testing, and handover. This coordinated approach helps clients achieve technical compliance, cost efficiency, and timely delivery.

Contact Your Civil and Sewer Engineering Team

Exjet offers professional sewer repairs, sewer sealing services, and sewerage engineering across Devon, Cornwall, Somerset, and Dorset. To discuss your needs or book a consultation with experienced sewage engineers, contact the team today.