Water Infrastructure Civils
Providing specialist civil engineering, pumping station groundworks, and utility infrastructure solutions for the UK’s leading water authorities.
Sector Overview
Working within the water infrastructure sector, and specifically with major water authorities such as Severn Trent Water, requires a disciplined commitment to safety, compliance, and operational resilience. At Major Oak Construction, we deliver a comprehensive service suite – encompassing main contracting, structural works, refurbishment, specialist groundworks, and asset maintenance – managing civil engineering projects from initial programming through to final handover across water treatment facilities, pumping stations, pipelines, and associated utility infrastructure.
We understand the critical role these assets play in public supply and environmental protection. Our teams carefully plan, phase, and coordinate works to ensure absolute continuity of service, strict adherence to utility-specific standards, and minimal disruption to essential regional operations. Operating as both a specialist subcontractor and principal contractor, we work collaboratively with framework stakeholders, engineering consultants, and site managers to deliver robust, compliant, and durable outcomes at every stage of the project lifecycle.
Our Capability in Secure Environments
Safety-First Delivery
Working on live utility sites requires a zero-compromise approach to risk. Our teams are fully trained in utility-specific safety protocols, ensuring that deep excavations, confined space entries, and heavy plant operations are executed with strict, documented hazard mitigation.
Environmental Integrity
We understand the sensitivity of the natural water cycle. Major Oak Construction prioritises environmental compliance, implementing robust measures to prevent site runoff, protect local watercourses, and ensure all water infrastructure civils are delivered in alignment with Environment Agency guidelines.
Quality Assurance
Utility infrastructure must be built for generational durability. We utilise site-specific Inspection and Test Plans (ITPs) to ensure all reinforced concrete works, pumping station bases, and pipeline installations meet the exact technical specifications of our utility partners.
What sets Major Oak Construction apart in the Water Infrastructure/Severn Trent Water sector?
Built around operational reality
We shape our approach around how water treatment and pumping assets actually operate, ensuring our works integrate seamlessly with live infrastructure and active processes.
Safety-led thinking, not box-ticking
Safety is embedded into our planning and site execution, particularly on high-risk sites where hazardous gases, confined spaces, and live flows are present.
Experience that informs better decisions
With over a century of combined engineering background within our leadership team, we bring deep technical foresight, risk mitigation, and structural capability to every scheme.
Problem-solving before problems arise
Our solutions-focused delivery model allows us to identify potential ground and utility conflicts early, reducing programme delays and avoiding unnecessary asset downtime.
Professional delivery in sensitive environments
We respect the critical and sensitive nature of utility assets, executing all works with strict site discipline, high operational standards, and respect for local environments.
Pumping Station Groundworks & Substructures
We specialise in the delivery of reinforced concrete (RC) structures and deep excavation packages required for modern pumping stations. Our team manages everything from heavy structural base construction to the precise installation of pre-cast chambers, ensuring all structural elements meet the specific hydraulic pressures and load-bearing requirements of the water sector.
Wastewater Treatment Infrastructure
Supporting the maintenance, upgrade, and expansion of wastewater treatment works, we provide specialist civil engineering for settlement tanks, filter beds, and processing areas. We focus heavily on maintaining operational continuity, working in close coordination with site operations teams to deliver works without disrupting essential public utility services.
Pipeline & Utility Diversion Services
Our team provides precise excavation, trenching, and installation services for clean water and wastewater pipeline networks. Whether managing new mains connections or executing complex utility diversions, we ensure all work is carried out to the stringent technical specifications of partners like Severn Trent, prioritising long-term structural integrity and flow efficiency.
Sustainable Drainage Systems (SuDS) & Remediation
In an era of increasing environmental responsibility, we deliver robust SuDS solutions, including attenuation tanks, soakaways, and permeable paving. We also manage comprehensive site remediation, bulk earthworks, and ground stabilisation, ensuring the surrounding land is fully prepared and safeguarded throughout the construction lifecycle.
Discuss Your Secure Infrastructure Requirements
Partner with a construction company that understands the complexities of the justice estate. From CTC-cleared operatives to strict tool-control protocols, we are ready to mobilise for your next project.
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Severn Trent – Surface Water Drains Installation
Severn Trent – Surface Water Drains Installation
Precision Engineering for Critical Water Assets
Our track record in the utility sector is built on technical precision and environmental accountability. We understand that water infrastructure civils are not simply about construction; they are about reinforcing the critical national infrastructure that communities rely on every single day.
By partnering with major water authorities and Tier 1 delivery framework contractors, we have proven our capacity to execute complex pumping station groundworks and water treatment upgrades under rigorous regulatory oversight. Every scheme in our portfolio highlights our “Right First Time” framework, ensuring that every asset we deliver is engineered for long-term durability and full compliance with industry standards.
Frequently Asked Questions
How do you ensure works don’t impact critical water operations?
We work closely with clients and site operators during the planning stage to fully understand operational requirements, shutdown windows, and site sensitivities. Detailed method statements, phased delivery programmes, and clear communication ensure that essential services remain uninterrupted wherever possible. Our teams are experienced in working within live environments and prioritise operational continuity at every stage of the project.
What experience do you have working within regulated utility environments?
Major Oak Construction has delivered construction, groundworks, refurbishment, upgrade, and main contracting projects within regulated water and infrastructure environments. Our teams understand the strict compliance requirements, documentation processes, and operational procedures involved in working on utility sites, and we bring a professional, safety-led approach to every project we undertake.
How do you approach health and safety on high-risk water sites?
Health and safety is embedded into every stage of our project delivery. We carry out detailed risk assessments, RAMS, and site-specific safety planning before work begins, supported by ongoing toolbox talks, supervision, and compliance monitoring. Our teams are trained to work safely in complex and high-risk environments, ensuring both workforce and public safety remain a top priority.
How do you align with client standards and procedures?
We take time to fully understand each client’s operational standards, site rules, and governance procedures before commencing work. Our project teams integrate seamlessly with client processes, attending planning meetings, adhering to permit systems, and maintaining clear reporting throughout the project lifecycle to ensure full alignment and compliance.
What happens if site conditions change or issues arise mid-project?
We take a proactive and solutions-focused approach to unexpected challenges. If site conditions change, we assess the situation quickly, communicate transparently with stakeholders, and implement practical solutions that minimise disruption to programme, budget, and operations. Our experienced teams are used to adapting within live environments while maintaining safety and quality.
How do you maintain quality while working under tight constraints?
Quality is maintained through careful planning, experienced supervision, and robust quality assurance processes. Even when working to tight programmes or within restricted operational windows, we focus on clear sequencing, skilled workmanship, and regular inspections to ensure all works meet required standards and client expectations without compromise.
Our Core Sectors
Explore Our Other Sectors
Our commitment to quality and integrity extends across all core sectors. Discover how we bring the same technical expertise and safety-first approach to our utility and public sector partners.
Public Sector
Delivering reliable construction and main contracting solutions for public projects and community facilities.
Ministry of Justice (MOJ)
Delivering civils and infrastructure works within secure custodial environments, with a strong focus on safety and compliance.