★★★★★ 4.9/5 · 500+ reviews
The National Drainage Company provides drain unblocking and drainage services across Southampton, covering the SO postcodes — Portswood, Shirley, Bitterne, Woolston and the city centre. Pre-agreed prices, and CCTV, jetting and no-dig repairs.
As a major port city built partly on low-lying, reclaimed waterfront ground, Southampton has real surface-water and tidal-flood pressures around the city centre, Ocean Village and the waterside districts. Its dense Victorian terraces in Portswood, St Denys, Bevois Valley and Shirley — many now student HMOs — run on ageing shared clay drainage that's heavily loaded and prone to fat, wipe and root blockages. In Southampton, the public sewers and lateral drains are the responsibility of Southern Water, and we'll always tell you when a blockage sits on their network rather than yours.
Older terraces run on clay pipework that tree roots find and split at the joints.
Kitchens and food businesses keep drains under constant FOG pressure.
Converted flats share soil stacks, so one wipe can back up several homes.
Older surface drains and gullies silt up and struggle in heavy rain.
"Fast, tidy and did exactly what they said. Couldn't fault them."
"Showed me the problem on camera and sorted it properly. No hard sell."
"Reliable and professional — one call and it was handled."
| Area | Approx. response |
|---|---|
| Portswood | ~19 min |
| Shirley | ~18 min |
| Bitterne | ~19 min |
| Woolston | ~14 min |
| St Denys | ~13 min |
| Bevois Valley | ~22 min |
| Bassett | ~19 min |
| Swaythling | ~13 min |
| Millbrook | ~9 min |
| Ocean Village | ~18 min |
We aim to reach most jobs in Southampton within 60 minutes, 24/7. Call us and we'll confirm an arrival time for your postcode.
You're normally responsible for pipes within your boundary; the shared sewer beyond is usually Southern Water's.
We agree a clear, pre-agreed price before any work begins.
Yes — we cover Southampton and the surrounding area around the clock, 365 days a year, for both emergency and planned drainage work.
Yes — as well as homes we look after shops, restaurants, offices, care homes and property managers throughout Southampton.
Yes — we're fully insured, our engineers are DBS-checked, and we hold recognised industry accreditations including Water Jetting Association membership.
We confirm the drain is flowing freely before we leave, and if a blockage returns because we didn't clear it properly, we'll come back and put it right.
Wherever possible we use no-dig methods such as relining and localised patch repairs, so there's little or no excavation.
The same team, kit and pre-agreed price promise wherever you are in Southampton — jetting, CCTV and no-dig repair carried on every van.
24/7 local response, pre-agreed price before any work, fully insured.
📞 Call now: 0800 246 5157
