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Emergency Drain Unblocking in Dorchester

A drain that has stopped completely, water backing up or sewage escaping — the jobs that cannot wait until Monday.

Call 0330 133 1625 Request a quote

Which drain problems count as an emergency?

A drain is an emergency when waste is escaping, rising inside the property, or has left you without a working toilet. Those problems get worse every time anyone uses water, so they should not wait for a booked slot.

The situations we treat as urgent:

  • Dirty water or sewage coming up through a shower tray, bath, ground-floor toilet or floor gully
  • A manhole or gully outside overflowing across a path, drive or garden
  • The only toilet in the house filling instead of emptying
  • A business that cannot open a kitchen, washroom or customer area

A single sink that drains slowly, or a drain that still empties in a minute or two, is a problem worth fixing but rarely an emergency. A planned visit costs you less disruption than a call in the middle of the night.

What should I do while I wait for help?

Stop all water use in the property straight away. A blocked drain has nowhere to send new water, so it comes out at the lowest open point, which is usually a downstairs toilet, shower or floor gully.

  • Tell everyone in the house not to flush, run taps, shower or bathe
  • Pause the washing machine and dishwasher before they pump out, because each empties a lot of water in a few seconds
  • Keep children and pets away from any dirty water
  • If water is near sockets or extension leads, switch off at the consumer unit, but only if you can reach it without standing in water
  • Take photos of the water, any damage and the time it started, in case you make an insurance claim

Then ring us on 0330 133 1625 and describe what you can see. It helps us arrive prepared.

How do I know the drain is blocked and not just one fitting?

If two or more fittings are affected at once, the blockage is in the drain they share, not in any one of them. A single slow basin is usually its own trap or waste pipe.

The tell-tale signs of a blocked drain are a toilet that rises when you run the bath, a shower tray that fills when the washing machine empties, gurgling from a plughole when someone flushes upstairs, and a smell of sewage near the back door. Outside, an inspection chamber that is full of standing water when nothing has been used for a while confirms it. If you can lift the cover safely and the chamber is full, the blockage is between that chamber and the next one downstream.

What causes a drain to block suddenly?

Most sudden blockages are a slow build-up that finally closes the pipe, not a single object. Fat, wipes and paper collect over weeks or months, and the drain stops on the day the last gap closes.

The usual causes we find are wet wipes, including those sold as flushable, sanitary products, cooled cooking fat, food waste, and large amounts of toilet paper in one go. Outside, leaves and silt wash into gullies, and tree roots grow into joints and catch everything that passes. Less often the pipe itself has cracked, sunk or collapsed, which stops flow however well it is cleared. That last group is why we look at the cause rather than just the blockage.

Is it my drain, a shared drain or Wessex Water's?

You are usually responsible only for the drain that serves your property alone and sits within your boundary. Pipes shared with neighbours, and the public sewer, are normally the water company's, which in Dorchester is Wessex Water.

Since 1 October 2011, private shared sewers and lateral drains in England and Wales have been the responsibility of the water companies. In practice that means if your neighbour's chamber is also full, or the one in the road is, the blockage may well be one Wessex Water clears at no charge to you.

If you are not sure, call us anyway. Where we find the blockage is not yours to pay for, we will tell you before any work starts and explain who to report it to.

How we unblock a drain in an emergency, step by step

We get the water moving first, then establish why it stopped. The order matters, because nothing else can be done properly while the system is full.

  • On the phone, you tell us what is happening and we explain what the visit involves and what it will cost
  • On arrival, we lift the chambers to find where the water is standing and where it is clear
  • We clear the blockage from the most suitable chamber, using rods or a jetter depending on what is in the pipe
  • We run water through every affected fitting to confirm the whole system is flowing
  • We tell you what caused it, and whether anything needs a further look

If the job turns out to be bigger than described, we stop, show you, and agree a new price before carrying on.

Rodding or jetting: which does an emergency need?

Rodding suits a single obstruction close to a chamber, while jetting suits fat, silt and anything that has built up along the pipe wall. Many emergency jobs start with rods and move to the jetter if the blockage resists.

Rods are pushed and turned through the pipe to break up and pull back what is stopping it. They are quick to set up and work well on wipes and paper. A jetter sends water at pressure through a hose with a nozzle that scours the inside of the pipe and flushes debris downstream. It restores more of the pipe's full width, so it is the better choice for fat or silt. On fragile or damaged pipework we choose the gentler method and explain why.

How long does emergency drain unblocking take?

A straightforward blockage close to a chamber is often cleared in under an hour once we are on site. Longer runs, compacted fat, roots or more than one blockage take longer.

What adds time is usually access rather than the blockage itself: chambers buried under gravel or paving, covers that have rusted or been sealed in, or a run with no chamber near the problem. If we need a camera to see what is stopping the flow, that adds the time it takes to survey the run. We tell you on site if a job is going to take longer than expected, and why.

How much does emergency drain unblocking cost?

The cost depends on where the blockage is, what it is made of, and what it takes to reach and clear it. There is no call-out fee and no extra charge for nights or weekends, and we agree a fixed price with you before any work starts. As a guide, most drain unblocking jobs cost between £80 and £200, with simple blockages at the lower end and jetting or blockages in the main drain at the higher end.

The things that move the price are:

  • Whether rods will clear it or it needs jetting
  • How easy the chambers are to reach and open
  • How far along the run the blockage sits
  • Whether a camera survey is needed to find or confirm the cause
  • Whether there is more than one blockage

If the job changes once we are working, for example a clear blockage turns out to be a broken pipe, we stop, show you what we have found and agree a new price before going further. You do not get a bill for work you did not agree to.

What emergency unblocking can and can't fix

Unblocking restores flow when the pipe is sound and something is sitting in it. It cannot repair a pipe that is cracked, collapsed, sunk or full of roots coming in through a joint.

It will deal with wipes, paper, fat, silt, leaves and most root growth inside the pipe. It will not hold for long if the cause is structural, because the defect keeps catching debris and the blockage re-forms in the same place. Where that is the case, a CCTV survey shows the defect, and the options are usually a patch repair, a liner, or excavation of a section that has lost its shape. We tell you which applies and agree any further work separately.

Clearing it is only half the job

A drain that blocks once may just have been unlucky, but one that blocks twice in a year has a reason. That reason is usually a break, a dropped joint, roots, or a build-up of fat.

We tell you which one you are dealing with rather than leaving you to find out at the next blockage. Where it is not clear from the clearing work, a camera survey of the run shows exactly where the problem is and how serious it is. You get the footage and our findings, so you can decide what to do, get a second opinion or pass it to an insurer.

What can I safely try myself, and what should I leave?

If only one fitting is affected, a plunger on that sink or toilet is safe to try. Once water is rising in more than one place, the blockage is in the drain and DIY rarely helps.

Safe to try: stopping water use, plunging a single fitting, and lifting a light plastic chamber cover to see whether it is full. Best left alone: heavy cast-iron or concrete covers, which can crush fingers and leave an open hole to fall into; chemical drain cleaners, which will not shift a full blockage and leave caustic water for whoever clears it; and hired rods pushed into a pipe you cannot see, which can lodge or damage an older drain. If you have already tried a chemical, tell us when you call.

How do I stop it happening again?

Most repeat emergencies are prevented by changing what goes down the drain. Wipes, fat and sanitary products are behind most household blockages.

  • Bin all wipes, even those labelled flushable
  • Let cooking fat cool and put it in the bin, not the sink
  • Use a sink strainer and empty it into the food waste
  • Keep outside gullies clear of leaves, especially in autumn
  • Put a bin in every bathroom for sanitary products and cotton buds

If the drain keeps blocking even with all of that in place, the problem is the pipe, not the habits, and a survey is the sensible next step.

Covering Dorchester & the local area

We provide emergency unblocking throughout Charminster, Martinstown, Crossways, Puddletown, Broadmayne, Poundbury and the surrounding area. Call 0330 133 1625 for a free, no-obligation quote.

How it works

Simple, transparent process

  1. 1

    Tell us what’s happening

    Call and describe what you’re seeing — a slow sink, a gurgle, a smell or standing water. It usually tells us a lot before we arrive.

  2. 2

    We find the cause

    We clear enough to get flow back, then work out why it blocked — because a drain that blocks twice has a reason.

  3. 3

    A price before the work

    If it needs more than a clear — a repair, a lining, a survey — you get the price and the reason before we start it.

  4. 4

    You see the evidence

    Where we survey, you get the footage. Where we repair, you see the before and after.

Don't let it get worse

Get expert help right now

Tell us what the drain is doing and we will explain what is likely causing it and what the work involves.

Call 24/70330 133 1625

Other services

Blocked Sinks

Kitchen sinks, basins, baths and showers draining slowly or not at all.

Learn more

Drain Cleaning

Clearing build-up before it becomes a blockage — for properties that keep having the same problem.

Learn more

CCTV Drain Surveys

Camera survey of the run, so decisions are made on what is actually there.

Learn more

Emergency Unblocking: common questions

Can you come out tonight or at the weekend?
Yes. We take emergency calls 24 hours a day, every day, including evenings, weekends and bank holidays. When you ring, describe what is happening and we will confirm when we can be with you and what the visit will cost. For emergency call-outs we aim to be with you within 60 minutes. If water is rising, stop all water use in the property while you wait.
Do you charge more for evenings and weekends?
No. The same fixed prices apply at two in the morning on a Sunday as at two in the afternoon on a Tuesday, and there is no call-out fee at any hour. You are given the price before any work starts. If anything changes once we are on site, we stop and agree it with you first.
Is sewage in the house dangerous?
Sewage carries bacteria that can make people ill, so treat any backflow as a hygiene risk. Keep children and pets away, wear rubber gloves if you must touch anything, and wash your hands thoroughly afterwards. Do not use affected food preparation surfaces until they are cleaned and disinfected. If water has reached electrics, switch off at the consumer unit only if you can do so without standing in it.
Should I call a plumber or a drainage company for a blocked drain?
Call a drainage contractor when the blockage is underground or affects more than one fitting. Plumbers work on the water supply, heating and the pipes above floor level, while underground drains, chambers and sewer connections need rods, jetting and camera equipment that drainage firms carry. If only one sink or toilet is affected and nothing else is backing up, either may be able to help.
Does home insurance cover a blocked drain?
It depends on your policy. Some home insurance covers accidental damage to underground drains and the water damage a backflow causes inside, while the cost of simply clearing a blockage is often excluded. Check the wording or ask your insurer before work starts if you intend to claim. Photos of the damage and our survey footage and findings can support the claim.
Is a blocked drain an emergency repair in a rented home?
Report it to your landlord or letting agent straight away, especially if sewage is escaping or you have no working toilet. In England and Wales, landlords are responsible for keeping drains and sanitation in repair. If the blockage was caused by something flushed or poured away by the occupants, the tenancy agreement may allow the landlord to pass the cost on.
Can I use the toilet upstairs while the downstairs one is overflowing?
No. Every toilet, sink and shower in the house drains into the same pipe, so anything you send down upstairs will come out at the lowest point, which is often the downstairs toilet or shower. Stop all water use until the blockage is cleared. If you have no alternative, use a bucket and bin the waste rather than flushing.
Do you handle emergencies at commercial premises?
Yes. We clear blocked drains at shops, offices, restaurants, pubs, holiday lets and other business premises across the Dorchester area, at any hour. The aim is to get you trading again first and come back to the underlying cause once you are open. For kitchens and washrooms, we can also advise on what would stop it recurring.
Can you check the drain with a camera while you're there?
Yes. We carry out CCTV drain surveys, and once the drain is flowing a camera run can show what caused the blockage and whether the pipe is damaged. We will tell you whether a survey is worth doing and agree its price with you before starting. You keep the footage and findings.
Do I need to be at the property when you arrive?
Someone needs to let us in if the blockage affects fittings inside, and to show us where the chambers are. If the problem is entirely outside and the chambers are easy to reach, we can talk through access on the phone. Either way, we will not start work until you have agreed the price.
How quickly can you get to me in an emergency?
For emergency call-outs in Dorchester and the surrounding villages, we aim to be with you within 60 minutes of your call, day or night. When you ring, we confirm the timing for your call before we set off. While you wait, stop all water use so the blockage has no more water to push back into the property.
How can I pay?
You can pay by card, by bank transfer or in cash. The price is agreed with you before any work starts, so you know the amount before we begin. If you are a landlord or letting agent who needs regular work across several properties, ask us about an account so the work can be invoiced instead.