Commercial Drainage Service
High Pressure Water Jetting
Jetting removes what has built up inside a drainage system rather than just punching a hole through it — grease in kitchen runs, silt in yard gullies, scale and process residue in industrial pipework.
Rodding a blockage clears the obstruction. Jetting restores the pipe. On commercial systems that distinction matters, because most commercial blockages are not caused by a single object but by a gradual loss of bore: fat cooling and hardening along a kitchen waste run, silt settling in a yard drain, scale forming on the pipe wall over years of use.
Water at pressure scours that build-up off the pipe wall and flushes it downstream to a chamber where it can be removed. Done properly, the run goes back to something close to its designed capacity, which is why a jetted drain typically stays clear far longer than a rodded one.
The drainage professional behind The Drain Lads has over 20 years of experience in the drainage industry. Applied to jetting, that experience is mostly about judgement: knowing which runs will take pressure, where a fragile or already-damaged pipe needs a different approach, and when jetting is treating a symptom of a defect that needs surveying instead.
When this service is used
Grease-laden kitchen and canteen runs
Commercial kitchens, staff canteens, hotels and pubs generate fat, oil and grease that cools inside the pipe. Jetting is the standard method of removing it, and the standard way of preventing the blockage that follows it.
Yard, car park and surface water drainage
Gullies, channel drains and surface water runs collect silt, grit, leaf litter and site debris. Left alone, they surcharge in heavy rain and flood the areas the site needs to keep open.
Interceptors and industrial systems
Where an interceptor or industrial run has accumulated sludge, sediment or process residue, jetting is used to clear the system alongside proper removal of the arisings.
Slow-running drains before they block
A drain that has started running slowly is one that is losing bore. Jetting at that point is planned work; waiting is an emergency attendance during trading hours.
Before a CCTV survey
Camera footage of a silted or greased pipe shows very little. Runs are frequently jetted so the survey can actually assess the pipe wall and identify defects.
As scheduled preventative maintenance
For kitchens and industrial yards, planned jetting at a set frequency is normally lower cost overall than reactive attendance whenever something backs up.
Problems jetting resolves — and problems it reveals
Jetting fixes build-up. Where the blockage returns quickly afterwards, that is useful information in itself: the cause is structural, not accumulation.
- Fat, oil and grease deposits hardened along kitchen waste runs and grease line connections
- Silt, grit and sediment in yard gullies, channel drains and surface water systems
- Scale and mineral build-up narrowing the bore of older pipework
- Soft blockages of wipes, paper and waste in washroom and welfare drainage
- Leaf litter and organic debris in car park and landscaped-area drainage
- Sludge and settled solids in interceptors, sumps and industrial pipework
- Recurring surcharge in heavy rain caused by reduced capacity rather than system design
- Runs that block again within weeks of jetting, indicating a defect, backfall or root ingress to be surveyed
Process
How commercial jetting is carried out
The method is set by the pipe and the site: material, diameter, age, condition, and where the arisings and water are going to go.
- Step 1
Assess the system
We establish what the run is, what it serves, its likely material and condition, and what has been done to it before. Jetting an already-damaged pipe at the wrong pressure makes the situation worse.
- Step 2
Set access and containment
Chambers are opened, the working area is made safe, and arrangements are made for arisings and water so that debris is not simply pushed into somebody else's problem downstream.
- Step 3
Jet the run
Water is worked through the run to strip build-up from the pipe wall and flush it back to a chamber for removal, continuing until the run is flowing to its proper capacity.
- Step 4
Verify and advise
Flow is checked, the area is cleaned down and covers reinstated. Where the run behaved in a way that suggests a defect, we say so and recommend a survey rather than booking another jetting visit.
Why jetting matters for commercial premises
Commercial drainage rarely fails at a convenient moment. Kitchen runs back up mid-service, yard drains flood during a downpour when the site is at its busiest, and washrooms go out of use with the building occupied. Almost all of those failures are preceded by weeks or months of gradual build-up that jetting would have removed.
There is also a compliance and reputational dimension. Grease escaping into the public sewer, foul water surcharging into a trading area, or a flooded yard creating a slip hazard are not just drainage issues — they involve the water authority, environmental health, insurers and staff safety.
For facilities and property teams, jetting is one of the few drainage activities that can be planned entirely on your terms: known scope, known timing, out of hours if needed, and recorded against the property.
On-site considerations and disruption
Jetting involves water, pressure and open chambers, so the planning around it is what keeps a live site running normally.
- Work is planned around service periods, deliveries and shift patterns — kitchen runs are usually jetted outside food service.
- Working areas are segregated so staff, customers and the public are kept clear of open chambers and hoses.
- Splash, spray and odour are managed, which matters most in retail, hospitality, care and education environments.
- Arisings are dealt with responsibly rather than flushed onward into the next section of the system.
- Fragile, historic or previously repaired pipework is treated accordingly; where jetting is not appropriate we say so before starting.
- The area is washed down, covers reinstated and access returned on completion, with findings reported back.
Related services
Services used alongside jetting
Drainage problems rarely sit in one category. These are the services most often used alongside this one.
Drain unblocking
Reactive clearance where a blockage has already stopped a kitchen, washroom or yard from working.
View serviceDrain cleaning
Broader cleaning of a system, scheduled or reactive, to keep runs flowing at their intended capacity.
View serviceCCTV drain surveys
Where jetting does not hold, a camera survey establishes whether a defect is causing the repeat blockage.
View serviceRoot removal
Cutting out root ingress and identifying the joint or defect that let the roots into the pipe.
View servicePlanned drain maintenance
Scheduled jetting at intervals set against how the drainage is actually used on your site.
View serviceDrainage investigations
Structured investigation where recurring blockages span multiple runs or nobody can explain the pattern.
View service
Sectors where jetting is used most
Grease-heavy and vehicle-loaded sites need jetting most often; occupied buildings need it planned most carefully.
FAQs
Questions we are asked about this service
If your question is not covered here, send the site details through and we will answer it directly.
Arrange commercial jetting for your site
Tell us the property, what the drainage serves and when the area can be released. We will quote the works and the access window together.