Drainage Contractor Insurance

Drainage work puts you underground, under pressure and under somebody's property, and each of those is a different kind of claim.

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Three Different Exposures In One Trade

The physical risks are familiar to any groundworker: striking an unmarked service, collapsing an excavation, flooding a property when a blockage clears the wrong way. High pressure jetting adds its own, because water at those pressures damages pipework, injures people and backs up into buildings.

The one people miss is the report. A CCTV survey that misses a defect, or a condition report relied on in a house purchase, is advice. When it turns out to be wrong the loss is financial, nothing is physically damaged by you, and public liability is not designed to answer it.

What Drainage Contractor Insurance Covers

Public liability

Injury and damage to third parties: flooding a property, damaging a driveway, striking a neighbour's pipework. Usually £5 million, with £10 million common on local authority, water company and highways work.

Employers' liability

Compulsory from the first employee at a £5 million statutory minimum. Confined space work and excavation make this a working section rather than a formality.

Professional indemnity

For survey reports, condition assessments and recommendations. A missed defect on a CCTV survey that a buyer relied on is a financial loss and sits here, not under liability.

Underground services cover

Damage to existing underground pipes, cables and apparatus. Frequently excluded or sub-limited on standard liability wordings, and in this trade it is close to the main exposure.

Plant, tools and vehicles

Jetting units, CCTV crawlers and reels, cutters and excavators. CCTV equipment in particular is high value, portable and a known theft target.

Contract works

The installation itself where you are laying or relining, before it is handed over.

Where The Cover Stops

Wordings differ between insurers, so treat these as the usual position rather than as universal fact. Where one of them matters to you, it is worth checking on your own schedule before you need to.

The underground services exclusion

Many liability wordings exclude damage to underground services unless written back, and some require you to have obtained and followed service plans before excavating. Striking an unmarked main without evidence that you checked is where these claims fail.

Damage to the pipe you were working on

Property in your care, custody and control is typically excluded, which can include the drain itself. Jetting damage to an already fragile clay or pitch fibre run is the common version of this argument.

Gradual pollution

Sudden and accidental pollution is often covered; gradual seepage usually is not. On foul drainage and septic work that distinction decides whether a contamination claim is answered.

Confined space conditions

Entry into chambers and sewers normally carries conditions about training, gas monitoring and rescue arrangements. These are conditions, not guidance.

Reports outside the declared scope

If professional indemnity is not on the schedule, survey work is uninsured regardless of how good the liability limit is.

The Survey Report Is A Separate Business

A drainage contractor who also sells CCTV surveys is running two businesses with two insurance profiles, and the second one is easy to overlook because it feels like part of the first.

A pre-purchase drainage survey gets relied on by a buyer, a lender and sometimes a solicitor. If it misses a collapsed section or a shared private sewer, the claim is for the cost of the repair the buyer did not know about, and there is nothing you physically damaged. That is a professional indemnity claim and public liability will not touch it.

Two practical steps. Get professional indemnity on the schedule if you issue reports for payment. And make the limitations of the survey explicit in the report itself: what was accessible, what was not, and what the footage does and does not show. A clear scope is the best defence there is.

Underground Services, And Proving You Checked

Striking a gas main, a water main or a fibre duct is the expensive accident in this trade, and the cost is rarely the repair. It is the consequential loss: the street dug up, the businesses without service, the utility's own claim.

Insurers respond to process. Did you obtain service plans before excavating, did you scan, did you hand dig where plans indicated apparatus, and can you evidence any of it. A contractor with plans on file and a documented scanning routine is in a very different position from one relying on recollection.

Check whether your wording covers underground services at all, and at what limit. It is commonly excluded or heavily sub-limited on general contractor policies, which is an awkward thing to discover on the day.

Jetting Pressure And Fragile Pipework

High pressure jetting is effective and it is also the thing most likely to generate a dispute, because a lot of the pipework it is used on is old.

Pitch fibre, degraded clay and poorly jointed runs can fail under pressures that would be unremarkable in sound pipework, and the homeowner's position is usually that it was fine until you arrived. Whether that is fair or not, it is the claim.

What protects you is the same thing that protects the pipe: surveying before jetting where there is any doubt, recording the condition found, and setting pressure to the material rather than to the blockage. Insurers notice contractors who do this, and so do loss adjusters.

How To Choose Insurance For A Drainage Business

Drainage is frequently insured on a general contractor policy that was never written for it, and the gaps only appear when something goes wrong underground. We are an FCA regulated broker and will not claim to be the best choice. These are the questions that decide it.

Is damage to underground services covered, and at what limit?

Commonly excluded or sub-limited on general wordings, and close to the main exposure in this trade. If the quote does not mention it, it has not been considered.

Is professional indemnity included if you issue surveys?

A missed defect on a pre-purchase report is a financial claim with nothing physically damaged. Liability will not answer it.

Does the wording distinguish sudden from gradual pollution?

On foul drainage and septic work this determines whether a contamination claim is paid at all.

Have they asked about jetting pressures and pipe condition?

A broker who raises fragile pipework before quoting understands where the disputes in this trade come from.

Are confined space conditions ones you can evidence meeting?

Training, monitoring and rescue arrangements are conditions. Better to check you comply before a claim than during one.

Factually, we check the underground services position explicitly rather than assuming the general liability wording covers it, we quote professional indemnity where you issue reports, and we ask about jetting and pipe condition before approaching the market. We are a broker, so the risk goes to several insurers rather than one.

We do not publish a starting premium for drainage, because our book does not hold enough policies in the trade to support a figure we could stand behind.

What Moves The Price

Every policy is priced on the business behind it. These are the things that move the premium:

The split between jetting, excavation, lining and surveying
Whether you issue reports, and the professional indemnity limit
Depth of excavation and whether you enter confined spaces
Turnover and wageroll
Plant and CCTV equipment values
Claims history, particularly service strikes and flooding

We are a broker, so we take it to several insurers rather than quoting one. Call 02382 000820 for a quote.

What We Need To Quote

The split between jetting, excavation, lining and survey work
Whether you issue written reports for payment
Maximum excavation depth and any confined space entry
Estimated turnover and wageroll
Plant and equipment list with values
Any claims in the last five years

Cover that often goes with this

The gaps we most often find sitting next to this policy.

GroundworksExcavation, services and the wider civils exposure.
Professional indemnityThe section that answers a survey report rather than a burst pipe.
Plant insuranceJetting units, CCTV kit and excavators, owned and hired in.

Common questions

What insurance does a drainage contractor need?+

Public liability at £5 million or £10 million depending on who you work for, employers' liability from the first employee, and cover for plant and CCTV equipment. Two additions matter more in this trade than most: damage to underground services, which is often excluded or sub-limited on general wordings, and professional indemnity if you issue survey reports, because a missed defect is a financial claim that liability will not answer.

Am I covered if I damage an underground pipe or cable?+

Only if the policy covers underground services, which is commonly excluded or heavily sub-limited and needs writing back. Insurers also look at process: whether service plans were obtained, whether you scanned, and whether you hand dug where apparatus was indicated. The expensive part of a service strike is rarely the repair, it is the consequential loss to the utility and to everyone cut off.

Does public liability cover a CCTV survey that missed a defect?+

No. A survey is advice, and a claim that it was wrong is a financial loss with nothing physically damaged by you. That is professional indemnity. If you sell surveys, particularly pre-purchase ones that buyers and lenders rely on, it needs to be a named section. Making the scope and limitations explicit in the report itself is the other half of the defence.

Who insures drainage and jetting contractors in the UK?+

Insurers that write groundworks and civils generally will write drainage, but the terms vary a lot on the two things that matter here: underground services and professional indemnity for surveys. Several of the better markets are reached through brokers rather than direct. Ask which markets are being approached and how each handles those two sections.

Am I liable if jetting damages old pipework?+

It depends on the condition of the pipe and what you did, and it is the most common dispute in the trade because much of the pipework being jetted is pitch fibre or degraded clay. Property in your care, custody and control is also typically excluded, which can include the drain itself. Surveying before jetting where there is doubt, and recording the condition you found, is what resolves these arguments in your favour.

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