Drainage Compliance Survey
Understand whether your on-mains or off-mains drainage system meets current requirements. UKDP identifies areas of concern and explains what needs attention, giving you clearer information for property management, a sale or purchase.
Drainage Compliance Surveys Explained
A drainage compliance survey assesses an existing on-mains or off-mains system against the requirements that apply to it. It considers how the system is arranged, its condition, how it operates and where wastewater is discharged.
The survey can be useful when managing a property, preparing for a sale or purchase, or investigating uncertainty about the drainage arrangements.
UKDP provides a written report setting out the findings, any areas of concern and the recommended next steps.
Checks Included in UKDP's Drainage Compliance Survey
The precise checks depend on the drainage system and the requirements that apply to the property. UKDP’s assessment can include:
System type and arrangement
Identification of the on-mains or off-mains drainage system and the accessible components that form part of it.
Infrastructure condition
Assessment of accessible pipework, tanks and associated components for damage, deterioration or other visible concerns.
Tank or treatment plant operation
Review of how a septic tank or sewage treatment plant is operating and whether any performance concerns require attention.
Discharge arrangements
Assessment of where wastewater is discharged and whether the existing arrangement raises regulatory or environmental concerns.
Compliance review
Consideration of the rules relevant to the system, with percolation testing included where it is required to assess ground discharge.
Written findings and recommendations
A report explaining the findings, highlighting compliance concerns and setting out the recommended action where changes are needed.
What Our Customers Say About UKDP's Drainage Services
UKDP have, from my first contact with them, been very helpful, informative and re-assuring even when all hope seemed lost for a favourable outcome. Their in-depth knowledge and sheer determination made our claim possible where I feel sure most companies would have given up!
Thank you all so very much for all your work on my behalf. There is no way it was going to get done without your input. I would recommend you to anyone with similar problems. It's such a relief to have it done. Thanks again.
I cannot fault the tremendous work carried out by UKDP. From start to finish, all involved exhibited a professional, dedicated and high standard of work ethic. They treated my property with the utmost respect.
The UKDP Drainage Compliance Survey Process
The assessment is tailored to the drainage system and the compliance questions that need to be answered.
Confirm the survey scope
We establish the type of drainage system, the property involved and the reason the compliance survey is required.
Arrange the site visit
A UKDP field engineer attends the property to examine the accessible parts of the drainage system.
Inspect the system
The engineer assesses the arrangement, condition and operation of the relevant drainage infrastructure.
Review compliance
The findings are considered against the requirements that apply to the system and its discharge arrangements.
Identify required action
Any compliance concerns are recorded, with further testing or remedial work recommended where appropriate.
Provide the report
You receive a written report explaining the findings, areas requiring attention and the recommended next steps.
Other Drainage Survey Options from UKDP
A compliance survey focuses on regulatory concerns. But if your enquiry relates to a property transaction or the condition of accessible pipework, another UKDP survey may be more suitable.
Home Buyer Drainage Survey
Understand the condition of a private drainage system before completing your purchase. The survey examines the tank and wider system, with the Plus option adding CCTV inspection of accessible pipework, a WinCan report and recorded footage.
Learn moreHome Seller Drainage Survey
Create a clear record of the drainage system’s condition before placing or progressing a property sale. The report identifies concerns and provides recommendations that can be shared with prospective buyers.
Learn moreCCTV Survey
Inspect accessible drainage pipework internally to locate structural damage, blockages, root ingress and other defects. You receive a detailed report with supporting images or video, recommendations and estimated costs where remedial work is required.
Learn moreDrainage Compliance Survey Cost
An on-mains drainage compliance survey costs £360 including VAT (£300 + VAT). An off-mains compliance survey costs £399 including VAT; the tank needs emptying first, which costs about £250. The survey assesses the condition, operation and discharge arrangements of your on-mains or off-mains drainage system.
You will receive a written report explaining the findings, identifying any compliance concerns and setting out the recommended next steps. This provides clear information for managing a property, supporting a sale or purchase, or planning any necessary work.
Recent UKDP Drainage Compliance Surveys
Why Choose UKDP for Drainage Compliance Surveys
Established in 2009, UKDP combines practical drainage experience with site-specific assessments, clear reporting and nationwide coverage.
Drainage experience since 2009
Our experience across different drainage systems helps us recognise concerns and assess what they mean for the property.
Clear written reports
Your report explains our findings, identifies areas of concern and provides practical recommendations for any action required.
On-mains and off-mains expertise
We survey mains-connected drainage and private systems, applying the relevant checks to the system installed at your property.
Professional Indemnity cover
UKDP carries £2 million in Professional Indemnity insurance, supporting the technical advice and recommendations we provide.
Site-specific assessments
Every survey considers the drainage arrangement, its condition and how the system operates rather than relying on a standard checklist alone.
Nationwide, locally delivered
UKDP engineers and trusted local partners carry out surveys across the UK, coordinated by our central team.
Potential Signs of Drainage Non-Compliance
Drainage concerns are not always visible. A UKDP survey establishes how the system is arranged, assesses its condition and identifies areas requiring attention.
Potential concern
- The discharge route or destination is unclear
- Accessible pipework appears damaged or blocked
- A septic tank or treatment plant is not operating as expected
- The drainage has been altered without clear records
- You are unsure whether the system meets current requirements
- A property sale or purchase requires clearer drainage information
What a UKDP compliance survey clarifies
- How wastewater leaves the property and where it discharges
- The condition of the drainage and any visible defects
- The system’s condition and operating efficiency
- The current arrangement and where further evidence may be required
- Any apparent compliance concerns and their significance
- Written findings and recommended next steps
Understanding When a Drainage Compliance Survey is Needed
Not every property needs a compliance survey. It is most useful when you need clear evidence about the drainage system’s condition, operation or discharge arrangements.
A survey may be appropriate when:
- You are buying or selling a property.
- Drainage records are missing or incomplete.
- The system or discharge route is unclear.
- Alterations have been made to the drainage.
- You suspect the system may not meet current requirements
UKDP will first discuss what you need to establish and confirm whether a compliance survey is the right investigation.
Compliance Surveys for Property Owners and Professionals
UKDP provides clear findings for people responsible for owning, assessing, insuring or selling properties with on-mains or off-mains drainage.
Homeowners
A compliance survey that assesses whether the drainage at your home meets the current rules.
Learn moreLandowners
Understand how the drainage system is arranged, whether it is operating as intended and where compliance concerns may require attention.
Learn moreInsurers
Receive documented findings on the system’s condition, operation and discharge arrangements to support the assessment of a drainage-related claim.
Learn moreEstate Agents
Give buyers and sellers clearer information about the drainage system, including identified concerns and recommended next steps before a transaction progresses.
Learn moreRelated Blogs
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Should I Buy a House With Private Drainage?
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Read articleDrainage Compliance Surveys: Frequently Asked Questions
Ask our teamIs a drainage compliance survey legally required?
Not in every case. There is no blanket requirement to purchase a named compliance survey. However, the person responsible for a drainage system must meet the rules that apply to its operation and discharge. A survey is useful when compliance is unclear or written evidence is needed.
What is the difference between a compliance survey and a CCTV survey?
A CCTV survey uses a camera to inspect accessible drainage pipes for blockages, damage and structural defects. A compliance survey considers the wider system, including its arrangement, condition, operation and discharge. UKDP can advise which survey best answers your particular concern.
Will a standard building survey check drainage compliance?
A standard building survey may note visible drainage features or recommend further investigation, but it does not usually provide a detailed assessment of the drainage system. A specialist drainage survey examines areas that may otherwise remain inaccessible or overlooked and provides focused findings and recommendations.
Can a percolation test form part of the survey?
Yes. UKDP may include percolation testing when the suitability of the ground or the requirements of a drainage field need to be established. It will not be necessary for every system, so UKDP will confirm whether the test is relevant to the property.
Does a compliance survey provide a compliance certificate?
The survey produces a written report rather than a universal compliance certificate. It records the system examined, UKDP’s findings, any areas of concern and the recommended next steps. It should not be confused with regulatory approval, planning permission or an environmental permit.
What happens if the drainage system is found to be non-compliant?
The report will explain the concern and recommend the appropriate next step. Depending on the issue, this may involve maintenance, repair, further investigation, an upgrade or advice from the relevant authority. A compliance concern does not automatically mean the entire system requires replacement.
How long does a drainage compliance survey remain valid?
A survey records the system’s condition and arrangement on the inspection date, so it should not be treated as permanently valid. A new assessment may be advisable following alterations, damage, changes in property use or updates to the requirements affecting the drainage system.
Who arranges and pays for a compliance survey during a property sale?
Either the buyer or seller can commission the survey, depending on who needs the information. The person requesting the survey will normally pay for it unless another arrangement is agreed. Responsibility for any repairs or upgrades identified is a separate matter for the parties to negotiate.
Discuss Your Drainage Compliance Requirements
If you need to establish how your drainage system operates, whether its discharge arrangements are appropriate or what action an identified concern requires, speak to UKDP. We will discuss the property and the information you need before confirming whether a compliance survey is the right service.