Blocked Drains in Greenwich
Greenwich's combined sewer infrastructure creates two distinct blockage types. In properties across SE10, SE11, and SE12—primarily Victorian and Edwardian terraces—blockages often originate from hard-water limescale in soil pipes, grease buildup, or root intrusion into aging cast-iron drains. The shared surface water and foul water pipes mean a blockage in the external drain can flood multiple properties during heavy rainfall, a particular risk in low-lying areas of SE13.
Blocked drains in Greenwich stem from hard-water limescale, grease, and roots in Victorian properties across SE10–SE12, or from combined sewer surcharge during heavy rain in SE13. Thames Water's hard water accelerates mineral buildup. CCTV diagnosis identifies the cause so you can choose chemical descaling, mechanical rodding, or pipe relining.
Drainage in Greenwich — what local engineers know
Greenwich is served by Thames Water's combined sewerage system, where internal soil pipes connect to external foul drains that also accept surface water runoff. This design, inherited from the 1800s, is efficient in dry conditions but creates surcharge risk during storms. Greenwich Council maintains records of which properties fall within flood risk zones; SE13 areas near the Thames are Flood Zone 3. Misconnected drainage can trigger enforcement action from Greenwich Council — getting it fixed properly avoids the risk. Hard water from Thames Water creates mineral deposits in Greenwich's external cast-iron drains, reducing effective pipe diameter and trapping hair and grease.
- Hard water supply causes limescale accumulation in boilers, radiators and soil pipe joints — powerflush and descaling demand is high across Greenwich
- Combined sewerage infrastructure — common in older parts of Greenwich — means foul and surface water share the same pipe, increasing surcharge risk during heavy rainfall
- Large Victorian and Edwardian housing stock in Greenwich means clay soil pipes and brick-built inspection chambers are common — CCTV surveys frequently reveal root ingress and joint displacement
- Greenwich has Environment Agency flood warning areas nearby along the River Thames corridor — basement and ground-floor properties can face sewer backflow during heavy rain; non-return valves are strongly recommended.
What happens when you contact us in Greenwich
- 1 Immediate dispatch. We find the nearest available engineer covering SE10/SE11 and confirm the ETA before the call ends.
- 2 On-site diagnosis — no guessing. The engineer inspects using professional-grade equipment including CCTV where needed and quotes a fixed price before work starts.
- 3 Job complete, report issued. You receive a written completion report. All work is guaranteed — same fault returns within the guarantee period, we come back free.
Who's responsible for drains in Greenwich?
In Greenwich, responsibility for a blocked or damaged drain depends on where the fault sits. As a homeowner you are responsible for the drains within your property boundary that serve only your home. Since the 2011 private sewer transfer, Thames Water is responsible for shared sewers and lateral drains beyond your boundary — even where they run under private land. Road gullies and highway drainage are maintained by Greenwich.
This matters because it determines who pays. If our engineer's CCTV inspection shows the fault is in a shared sewer, we'll tell you — and you can report it to Thames Water rather than paying for the repair yourself. The combined sewer layout that dominates Greenwich affects where these boundaries typically fall, and our local engineers know the SE10, SE11, SE12 networks well enough to identify ownership quickly.
Blocked Drains prices in Greenwich
Every Greenwich job is quoted as a fixed price before work starts — what we quote is what you pay, with no call-out fee for providing the quote. However, the final price depends on access (an external inspection chamber is quicker than internal-only access), the pipe material and condition — significant in Greenwich, where many homes are Victorian and often run on original clay pipework — and how established the blockage or fault is. Request your free quote and we'll confirm the price and your engineer's ETA in the callback.
In summary, Blocked Drains in Greenwich is backed by a 12-month workmanship guarantee. Furthermore, every job includes a written completion report. Consequently, you have full documentation if the same fault recurs.