--- title: "Drainage & Blockages | Northstar Plumbing" description: "Clear blocked drains and stop recurring slow waste issues with professional drainage support in Brighton. Fast diagnosis, tidy work, clear pricing." canonical: "https://www.northstarplumbing.co.uk/service-categories/drainage-and-blockages" --- # Drainage & Blockages Dealing with blocked drainage, slow waste or persistent odours? Our **Drainage & Blockages** service focuses on finding the cause quickly, restoring normal flow safely, and leaving your property clean and fully usable again, with practical advice to help prevent repeat problems. When drainage problems strike, you need a clear plan, not guesswork. We begin with a practical assessment of fixtures and pipework, then identify the most likely cause of slow flow, backups, smells or leaks. You will get a plain-English explanation of what we found, your best options to restore normal drainage, and clear costs before work starts. Where repairs or ongoing maintenance are advisable, we focus on durable, compliant outcomes and minimal disruption, helping homeowners, landlords and small businesses keep everything running smoothly. 5 out of 5 (11 reviews) - > “Phoned because of a slow draining sink. They were quick to find a time that worked for us. Wouldn't hesitate to recommend them.” — Chris D. ![Person repairs wall-mounted bathroom sink with tools scattered on tiled floor](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Fbathroom-sink-repair-tools.jpg%3Fv%3D1768575116271&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ) ![Man in yellow gloves holds bucket under leaking white sink pipe while on phone](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Fman-catching-leak-bucket-under-sink.jpg%3Fv%3D1768575119787&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ)![3D render of a tidy utility-room corner with a floor access cover or drain grate, coiled inspection cable, work light, gloves, tool pouch, and a shallow tray on a slightly reflective sealed concrete floor.](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Ftidy_utility_maintenance_setup_3d_render.png%3Fv%3D1770397999169&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ) - ## Waste Pipe Replacement Waste pipe replacement to resolve recurring blockages, leaks or smells. Fault found, pipework renewed, and flow checked so drainage runs normally again. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/waste-pipe-replacement) - ## Waste Pipe Repair Fast, accurate waste pipe repair for leaks, smells or slow drains. We pinpoint the cause, clear blockages, replace damaged sections and confirm full drainage. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/waste-pipe-repair) - ## Trap Replacement Professional trap replacement for sinks, basins and baths. Fix leaks, odours and slow drainage, with careful fitting, sealing and leak testing. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/trap-replacement) - ## Soil Stack Blockage Clearance Professional clearance of soil stack blockages causing slow drainage, overflows or odours. We locate the issue, clear it safely and confirm flow is restored. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/soil-stack-blockage-clearance) - ## Slow Drainage Investigation Investigation and clearance for slow-draining sinks, baths and showers. We find the cause, remove the blockage and test drainage back to normal. Tips to reduce repeat blockages. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/slow-drainage-investigation) - ## Saniflo Service Routine Saniflo servicing to clear blockages, cut odours and restore proper drainage. Includes fault-finding, safe cleaning, testing and clear aftercare advice. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/saniflo-service) - ## Root Ingress Investigation (Domestic) Find and clear tree root ingress causing slow or blocked drains. Non-excavation investigation to locate the issue, restore flow and advise on next steps. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/root-ingress-investigation-domestic) - ## Minor Drain Repair Minor drain repair to stop slow draining, odours and small overflows. We find the fault, clear the blockage, and check the system drains properly. Ideal for homes and rentals. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/minor-drain-repair) - ## Manhole Inspection Targeted manhole inspection to find the cause of slow drains, odours or overflows, clear the blockage where possible, and confirm proper wastewater flow. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/manhole-inspection) Show more services - ## Macerator Unblocking Unblock and clean macerator toilets and Saniflo units to restore waste flow, reduce smells and lower the chance of repeat blockages, with clear advice on preventing future issues. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/macerator-unblocking) - ## Macerator Repair Targeted macerator repair to clear blockages, stop leaks and restore proper drainage. Includes fault finding, safe clearing and functional testing. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/macerator-repair) - ## High-Pressure Drain Jetting (Domestic) High-pressure drain jetting clears stubborn domestic blockages and cleans pipe walls to restore normal flow, reduce odours and help prevent repeat call-outs. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/high-pressure-drain-jetting-domestic) - ## Gully Trap Clearance Removal of gully trap blockages causing slow drainage, smells or overflow. Includes locating the cause, clearing debris and confirming free-flowing drainage. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/gully-trap-clearance) - ## External Drain Unblocking Unblocking external drains and gullies to stop slow drainage, smells and overflow. We locate the blockage, clear it, and confirm free-flowing pipework afterwards. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/external-drain-unblocking) - ## Drain Rodding Manual drain rodding to clear blockages, stop overflows and restore normal flow. For slow sinks, gulleys and foul odours, with checks after clearing as standard. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/drain-rodding) - ## Drain Odour Investigation A focused investigation to find the source of persistent drain odours. We check traps and pipework, clear blockages where needed, and test drainage before we leave. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/drain-odour-investigation) - ## Drain Maintenance (Domestic) Prevent repeat household drain blockages. We locate the cause, clear the obstruction safely, flush and test the line, then advise on keeping drains flowing well. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/drain-maintenance-domestic) - ## Blocked Waste Pipe Clearance Clear blocked waste pipes in kitchens, bathrooms and utility rooms. We locate the cause, clear the obstruction and confirm normal drainage and odour control. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/blocked-waste-pipe-clearance) - ## Blocked Toilet Clearance Fast, hygienic blocked toilet clearance to restore normal flushing and drainage. We identify the cause, clear the blockage safely, and confirm the system runs freely. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/blocked-toilet-clearance) - ## Blocked Sink Clearance Clear blocked kitchen and utility sinks caused by grease, food waste or debris. We locate the blockage, clear it safely, and confirm free flowing drainage. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/blocked-sink-clearance) - ## Blocked Shower Drain Clearance Professional blocked shower drain clearance to restore normal flow. We diagnose the blockage, clear the waste pipe and check drainage is fully restored. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/blocked-shower-drain-clearance) - ## Blocked Bath Drain Clearance Clear blocked bath drains caused by hair and soap build-up. We locate the blockage, remove it safely, and confirm the bath is draining properly again. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/blocked-bath-drain-clearance) - ## Blocked Basin Clearance Clear a blocked bathroom basin caused by hair, soap or limescale. We locate the blockage, clear it safely, and confirm free-flowing drainage. Suitable for homeowners and landlords. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/blocked-basin-clearance) - ## Appliance Waste Blockage Clearance Clear washing machine and dishwasher waste blockages causing slow drainage, overflows or odours. We identify the cause, clear the line and confirm proper flow. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/appliance-waste-blockage-clearance) - ## Air Admittance Valve Replacement Air admittance valve replacement to stop odours and improve drainage. Includes locating the valve, removing the faulty unit, fitting a new AAV and testing flow. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/air-admittance-valve-replacement) ## Frequently Asked Questions What kinds of problems does the Drainage & Blockages category cover? This category covers common drainage faults such as slow draining, recurring blockages, unpleasant odours, overflow risks, and minor drainage-related leaks. The aim is to restore normal flow and pinpoint why the issue happened so it is less likely to return. What can I expect when I book drainage and blockage work? We will ask a few questions, inspect the affected areas, and carry out checks to locate the restriction or fault. Once the cause is clear, we explain the options, confirm costs, and complete the work with minimal disruption and a tidy finish. Will the work be messy or disruptive? Drainage issues can involve water and residue, but we take steps to keep the area protected and contained. We work carefully, clean up before we leave, and aim to get your facilities back in service as quickly as possible. How do you approach pricing for drainage and blockage jobs? Pricing is handled transparently, based on what is needed to diagnose and resolve the issue properly. You will be kept informed as the job progresses, with any additional work discussed and agreed before proceeding. How can I prevent blockages and drainage smells from coming back? Good habits and early action make the biggest difference: avoid putting grease, food waste and non-flushable items into drains, and keep an eye on slow drainage. If problems recur, a planned maintenance approach can reduce emergency call-outs and protect pipework long term.