Northern Ireland based civil engineering consultancy specialising in drainage design.

We specialise in providing Drainage Assessments and drainage designs for residential, commercial and industrial development. We work with Northern Ireland Water (NI Water) for new developments for sewerage needs: Pre-Development Enquiry (PDE), A163 sewer connections, A154 Sewer Requisitions, Waste Water Impact Assessments (WWIA).

First of all

About Us

Streamline Drainage Ltd is a Northern Ireland based drainage consultancy set up in 2019 and based in Coleraine. We create drainage designs to suit developments using hydraulic modelling software and AutoCAD drawing software. We can work with you from inception through to construction.

stone fragment beside body of water during daytime

Not to mention

Our Services

At Streamline Drainage, we offer comprehensive drainage assessments and designs tailored to meet the specific needs of your project. As a consultancy we work closely with architects, planning consultants, and developers to ensure that your site's drainage system is efficient, effective, and compliant with PPS15 planning requirements. From inception to detailed design plans, we provide a complete range of services to support you throughout the development process.

water flowing through brown wooden pipe into surface

And let's not forget

Why Choose Us

When it comes to drainage consultancy in Northern Ireland, Streamline Drainage Ltd stands out from the rest. With our expertise and commitment to excellence, we deliver exceptional results for our clients. From our in-depth knowledge of planning requirements to our strong relationships with key stakeholders including Northern Ireland Water, DfI Rivers, DEARA we have the experience to ensure the success of your project. Trust us to provide reliable, innovative, and cost-effective solutions for all your drainage needs.

About Streamline Drainage

Streamline Drainage is a Northern Ireland based consultancy that offers expert drainage services throughout the entire development process. Streamline was set up in 2019 as its own entity and built from almost two decades of experience within the water and sewerage industry in UK and Ireland. With a focus in 2024 on compliance and collaboration, we provide tailored solutions for architects, planning consultants, and developers.