Commercial drain cleaning and maintenance contracts

A blocked drain at a business is a closed door, not an inconvenience. Commercial drain cleaning in Derby is planned or emergency jetting, desilting and closed-circuit television (CCTV) inspection. It covers the drains serving a shop, pub, restaurant, office or industrial unit.

It is done so the business does not have to close for a blocked toilet or a flooded kitchen. Drainage Emergency, based on Mansfield Road, DE21, covers commercial sites 24/7 across Derby, Derbyshire and Nottinghamshire. To talk through a site, call 01332 215521.

What commercial drain cleaning covers

Commercial drain cleaning is the jetting, desilting and camera inspection of the drains that serve a business. A pub kitchen, a shop’s staff toilet, an office block and an industrial unit all have drains. They carry more, and worse, than a house drain does.

Fat and food come from kitchens. Paper and wipes come from a toilet used by the public. Silt and grit come from a car park.

The method is the one on our high pressure drain jetting page. A jetting hose is fed from the nearest inspection chamber, the pit under the manhole cover. It cuts grease, silt and scale off the pipe wall and flushes it to the sewer. A desilting visit clears the settled material out of chambers and interceptors.

What changes on a commercial site is the timing, the access and the record. The clean happens when the premises are quiet. The engineer needs to know where the chambers are under the car park. The landlord, managing agent or insurer wants a record of what was done.

Drain maintenance plans

A drain maintenance plan is planned cleaning at an interval set by how quickly your drains fill. It starts with a first clean and a camera run. That shows the condition of the pipe and how much has built up. The interval is set from that: some sites need a visit every few months, others once a year.

On each visit the main run is jetted from the chambers, and the kitchen branches and gullies are cleared. Any interceptor, the chamber that traps oil and silt off a car park, is desilted too. The engineer notes what came out and anything that looks like it is getting worse. You get a written record of each visit. That is what a landlord, a franchisor or an insurer asks for after a flood.

The point of the plan is the Saturday you do not lose. A blocked toilet in a busy pub closes it. A planned clean on a quiet weekday morning costs less than one lost Saturday. The camera catches a cracked pipe before it collapses under the car park.

Emergency callouts for pubs, shops and offices

Trade stops when a drain backs up. One customer wrote that they had a blocked drain at a pub on a Saturday. Chris “was here within 30 minutes and sorted the problem straight away”. Another rang on a Friday afternoon with a toilet drain blocked in a retail shop. Dave “was at the shop within 20 minutes and sorted out the problem”, which the customer said saved the shop from flooding.

Those are two customers’ accounts, not a promise about the next callout. You ring 01332 215521, any hour of any day of the year. Tell us what is backing up and where. The engineer who attends carries rods, the jetting unit and a camera, and clears the drain on that visit.

Out-of-hours callouts are the norm in the city centre. The Cathedral Quarter around the 1721 Silk Mill, DE1, runs on combined Victorian drains. They are shared between shops, pubs and flats above them. A blockage that starts in one kitchen can show up in a neighbour’s basement. Our emergency drain unblocking page covers the callout in detail.

Grease, fat and what a grease trap does

Fat is the most common reason a commercial drain blocks. Warm cooking fat goes down the sink as a liquid. It cools in the drain and sets on the pipe wall, and every day’s washing-up adds another layer. The first sign is usually a sink that drains slowly or a gully outside the kitchen door that smells.

A grease trap is a tank fitted on the kitchen waste line. It slows the flow so fat floats to the top and is held back. The water carries on to the drain. Emptying and servicing grease traps is a specialist tanker job, and it is not something we do.

What we do is the drain the trap discharges into. We jet the run from kitchen to sewer to remove the fat that got past the trap. We also desilt the chambers it settles in.

Interceptors, pumping stations and larger sites

A petrol interceptor sits on a car park or yard. It separates oil and silt from the surface water before it reaches the sewer. It fills with silt over time and needs desilting before the silt reaches the outlet. That is a job we do.

A pumping station is a sump with pumps that lifts foul water from a low site up to the sewer. Gravity cannot do that on its own. The pumps, floats and controls need servicing by a pump engineer, which is not a service we offer.

The wet well the pumps draw from does fill with silt and rag. Rag is the wipes and cloth that wrap around a pump. Desilting a wet well is a job we do.

Pride Park, DE24, is where most of this sits in Derby. The business district around Pride Park Stadium was built on reclaimed railway land in the 1990s. It has large modern drainage systems. Those are maintained on a schedule rather than fixed in a panic.

Who is responsible for a commercial drain

Responsibility follows the pipe. Severn Trent Water owns the public sewers in Derby. Since the 2011 transfer of private sewers, it also owns most pipework beyond your boundary. That includes any drain shared between properties. The drain that serves only your premises is yours, and that is the pipe a plan covers.

Between a landlord and a tenant it depends on the lease. As a rule, the tenant keeps the drains clear and the landlord looks after the structure of the pipe. The Cathedral Quarter has combined Victorian drains. A single run there may serve a shop, a pub and three flats. There, the question of who pays for a clean is worth settling before the drain blocks rather than after.

Highway gullies on the adopted road outside are Derby City Council’s, as the Lead Local Flood Authority. The gullies in your car park are yours. A silted one shows itself in a downpour. By then, Markeaton Brook is already the surface-water pinch point, culverted beneath the city centre from Markeaton Park.

Setting up a plan or booking a one-off clean

When you call, tell us what the premises are and what the drains have been doing. Also tell us when the site is quiet enough for a visit.

The first visit is a clean and a camera run. From that we tell you the state of the drains, how often they need cleaning and whether anything needs repair. We quote before work starts and there are no hidden fees; quotes below two thousand pounds are paid on completion. We carry £5 million public liability insurance, and our engineers are fully qualified drainage engineers.

Where the camera shows damage, our CCTV drain survey page explains the report. Repairs can usually be done from inside the pipe without closing the premises.

If the drains at your premises have blocked more than once this year, call 01332 215521. We will book the first clean for a quiet morning and put the camera down. Then we will tell you straight whether you need a plan, a repair or neither.