3,000–4,000 PSI · Same-day dispatch · WRC reports
Drain Jetting London
High-pressure water jetting for blocked drains, fat and grease build-up, root ingress, and scale removal. Portable pump-cart, van-mount, and truck-mount jetters. Same-day dispatch across every London borough.
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Drain jetting — the fast, effective, no-dig clearance method
High-pressure water jetting is the standard first-pass method for any drainage blockage in London. A jet of water at 3,000–4,000 PSI (200–275 bar) directed along the pipe bore clears fat, silt, scale, and light-to-medium root ingress in minutes without any excavation or structural intervention. The drain is back in service the same visit. On the majority of domestic blockage calls, that is the entire scope of work — jet, flush, verify. On heavier or repeat problems, the jet is followed by a CCTV survey to understand the underlying cause, and by CIPP relining or excavation where structural defects require it.
The four jetter categories we deploy match the job scale. Portable pump-cart jetters at 3,000 PSI for standard residential lateral drains — wheeled to any manhole or rodding access, 6–15m reach, 15–25 L/min. Van-mount 4,000 PSI jetters with 60–100m hose reels for longer runs and heavier deposits, with 500L on-board water. Truck-mount jetters with 100m+ hose and 2,000L on-board water for adopted mainline sewers, commercial properties, and shared HMO drains. Rotating cutter heads (Warthog, USB-045, Ridgid) fitted to any of the above provide 360° pipe-wall coverage for fat, scale, and root ingress that a straight nozzle cannot cut.
The commercial value of jetting is in its combination of speed and low disruption. A standard domestic emergency blockage clears in 30–60 minutes on site, £195–£295 including WRC report if requested. Compared to excavation (£1,500+ and multi-day disruption), or even to CIPP relining (£1,850+ and 5–10 working days lead time), jetting is the right first-line answer wherever the drain integrity is not structurally compromised. Where it is, the CCTV survey after the jet identifies the follow-up scope and the customer decides whether to proceed with the permanent fix.
Every jetting job is delivered by a Water Regulations 1999 competent engineer (WaterSafe registration, UK Certification Ltd certificate 136356 issued 8 September 2025, expiry 18 August 2030). Public liability £5,000,000 via SiriusPoint through Eaton Gate MGU, policy BE26ACTT000000018221, period 07/05/2026 to 06/05/2027. WRC-format post-jet reports supplied on request — accepted by freeholders, HMO licensing teams, environmental health, and insurance loss adjusters without follow-up.
Four jetter categories — matching machine to job
Portable pump-cart jetting (up to 3,000 PSI)
Wheel-mount 3,000 PSI jetter for residential lateral drains 100–150mm diameter. Standard for a domestic blocked-drain call. 6–15m hose reach, 15–25 L/min water flow, portable to any manhole or rodding access. First-choice for a single-property blockage.
Van-mount high-flow jetter (4,000 PSI)
Van-mounted 4,000 PSI jetter with 60–100m hose reel and 30–45 L/min flow. Used for longer runs, mainline sewers, and heavier build-up (fat, scale). Water carried in the van (500L tank) means no external water supply needed at site.
Truck-mount mainline jetter (4,000+ PSI)
Large truck-mount jetter with 100–150m hose, 45–70 L/min flow, and 2,000+ L on-board water. Deployed for adopted mainline sewers, commercial premises with long private drains, and shared HMO drains where the customer needs to see full-length clearance in one visit.
Warthog and rotating cutting heads
Rotating cutter nozzles (Warthog, USB-045, Ridgid) driven by the jet water flow. Used for fat build-up, scale, and root ingress that a straight nozzle cannot cut. The rotating action provides 360° coverage of the pipe wall, clearing the crown-of-pipe deposits that gravity-only jetting misses.
Six common jetting applications in London
Fat, oil and grease (FOG) build-up
The single most common blockage in London commercial and residential drains. Fat solidifies on the pipe wall over months, gradually reducing the effective diameter until the drain fails. Van-mount 4,000 PSI with a Warthog rotating cutter head clears fat build-up on a domestic lateral in 20–40 minutes. Prevention: regular annual jetting on high-fat-risk properties (restaurants, HMOs, take-aways).
Root ingress (light and medium)
Where root ingress is light and the pipe is otherwise sound, jetting with a rotating cutter head is often sufficient without any liner. Repeat visits at 12–18 month intervals maintain the drain in service. Where root ingress is heavy or the pipe has structural failures, jetting clears the immediate blockage but a CIPP liner is the permanent fix — see /root-cutting-drain-relining-london.
Silt and debris accumulation
Slow accumulation of silt, sand and organic debris in surface-water drains and gully outfalls. Common on properties with block-paved driveways where the drainage falls slightly. Jetting with a straight nozzle flushes the debris to the mainline. Followed by a sump inspection and clear.
Scale build-up in cast iron drains
Older cast iron mainline drains in Victorian conversion blocks accumulate scale on the internal surface — calcium carbonate deposits from hard water and detergent residues. Scale reduces the effective diameter and creates rough surfaces that catch further debris. Rotating cutter head jetting at 4,000 PSI removes scale down to the metal.
Clearance ahead of CCTV survey
A CCTV survey through a drain with any significant deposit is inconclusive — the camera cannot see the pipe wall through the debris. Pre-survey jetting clears the pipe to camera-ready condition. Standard practice on any survey we run for pre-purchase, insurance, or WRC-format reports.
Post-blockage prevention on HMO and commercial premises
HMOs, restaurants, and offices with high-density drainage use benefit from scheduled preventative jetting on a 6-month or 12-month cycle. Cheaper than an emergency blockage call, and satisfies the good-management requirement on HMO licences and commercial waste management protocols.
Cost — drain jetting
| Scope | Price (inc. VAT) | Includes |
|---|---|---|
| Emergency blocked drain jetting (domestic, single lateral) | £195–£295 | Same-day dispatch, 3,000 PSI portable jet, blockage clearance, jet flush, verbal report |
| Blocked drain jetting with rotating cutter head | £250–£380 | Portable or van-mount jetter, Warthog rotating head for fat / roots / scale, jet flush |
| Full-property preventative jetting (multiple laterals) | £350–£550 | All accessible laterals jetted, WRC-format post-jet report, photographs of each drain |
| Mainline sewer jetting (van-mount 4,000 PSI) | £450–£750 | Van-mount jetter, long-hose reel, flush to manhole outfall, WRC report |
| HMO annual jetting contract (per property) | £450–£850 | Full-property jetting, WRC report for licence file, 12-month schedule with reminders |
| Restaurant / commercial kitchen scheduled jetting | £350–£650 per visit | Grease trap check, kitchen drain jet, WRC report for environmental health file. Typically 3-6 month cycle. |
| Jetting + CCTV survey combination | £450–£650 | Pre-survey jet clearance, HD CCTV survey, WRC-format report, defect list |
| Out-of-hours emergency dispatch | +£75–£150 | Evening or weekend response, engineer on site within 4 hours of call |
Real London drain jetting jobs
Kentish Town restaurant — kitchen drain FOG clearance
Restaurant reporting slow drainage at the kitchen sink over 4 weeks. Van-mount 4,000 PSI jetter with Warthog rotating head cleared 8m of accumulated fat and food debris in 45 minutes. Grease trap inspected and emptied by client. WRC-format post-jet report supplied for the environmental health file. Restaurant put on a 3-month preventative schedule. £480 first visit including WRC report.
Wandsworth Victorian terrace — repeat root ingress light jet
Homeowner with known light root ingress on the lateral to the sewer, blocking every 12–15 months. Standard portable jetter with rotating cutter head cleared the ingress in 20 minutes. Pre-jet CCTV confirmed no structural defects. Booked on an annual jetting cycle at £250 per year — cheaper than emergency callouts and less disruptive than a CIPP liner given the light ingress. £250 per visit.
Hackney HMO — full-property annual jetting for licence file
8-bed HMO with 4 lateral drains serving communal kitchen, ground-floor bathroom, first-floor bathrooms, and rear WC. Annual scheduled jetting across all four laterals in a single visit, WRC-format report for the landlord licence renewal file. Two of the four flagged minor deposits, all cleared. Total £750 including full property WRC report.
Drain jetting across every London borough
Frequently asked questions
What pressure is used for domestic drain jetting?
Is high-pressure jetting safe for Victorian clay drains?
How long does drain jetting take?
Will I need a CCTV survey as well as jetting?
Can jetting damage old drains?
Do you carry WRC-format reporting?
What certification and insurance do you carry?
How quickly can you attend for an emergency drain blockage?
Do you offer scheduled preventative jetting for landlords and restaurants?
What if the jetting does not clear the blockage?
Related services
Book same-day drain jetting
Same-day dispatch. WRC-format report supplied on request. £195–£295 for standard domestic clearance.
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