Septic Tank Surveys and inspections
Independent septic tank surveys and inspections for homebuyers, property sales and private drainage system assessments across Cheshire, Staffordshire and Greater Manchester.
✔ Septic tank & sewage treatment plants
✔ Percolation testing and soakaway drainage assessments
✔ CCTV surveys for private off-mains drainage systems
✔ Compliance checks for property purchases and homebuyers
What is a septic tank survey & Inspection?
A septic tank survey is a professional assessment of a property's off-mains drainage system, including the septic tank or sewage treatment plant, associated drainage and the discharge arrangement where these can be identified and accessed.
At Clearflow Surveys, we combine visual inspection, CCTV drainage surveying and system assessment to build a clearer picture of the condition and layout of the private drainage system. The findings are documented in a professional report, highlighting defects, operational concerns, apparent compliance issues and any limitations identified during the inspection.
The terms septic tank survey and septic tank inspection are often used interchangeably when arranging this type of property assessment.
Do You Need a Septic Tank Survey?
If your property uses a septic tank or private drainage system, a survey is strongly recommended. This is particularly important when buying a property, as septic systems are not covered in standard building surveys.
When Should You Arrange a Septic Tank Survey?
A septic tank survey is typically needed when:
Buying or selling a rural property
The property is not connected to mains drainage
There are signs of drainage issues or system failure
You need to ensure compliance with current regulations
Many properties across rural and semi-rural areas rely on private drainage systems, making inspection essential before making any decisions.
Septic Tank Surveys When Buying a Property
If a property is not connected to the mains sewer, understanding the private drainage system should form part of your wider due diligence before exchange of contracts. A standard building survey will not normally provide a detailed internal assessment of the septic tank, sewage treatment plant or associated underground drainage.
Our survey helps establish:
The type of off-mains drainage system present
The condition of accessible tanks, chambers and pipework
How the system appears to discharge
The location and layout of accessible drainage
Whether there are visible or identifiable defects
Whether there are apparent concerns in relation to current requirements
Any areas that could not be fully inspected
The findings can then be considered alongside your building survey, searches and legal enquiries before you commit to the purchase.
The Risks of Not Carrying Out a Survey
Septic tank issues can be costly and disruptive if not identified early.
Common risks include:
System failure or overflow
Blockages or damaged pipework
Environmental contamination
Non-compliance with UK septic tank regulations
These issues can result in:
Unexpected remedial work following purchase
Delays during property purchase
Legal or environmental liabilities
How does a Septic Tank Survey Help?
A professional survey gives you a clearer understanding of the accessible off-mains drainage system and its condition at the time of inspection.
It can help you:
Identify visible or CCTV-observed defects
Understand the layout and discharge arrangement where identifiable
Highlight operational concerns or areas requiring further investigation
Identify apparent compliance concerns
Understand whether specialist advice or remedial quotations may be required
Make a better-informed property decision
Septic tank Surveys
Every private drainage system is different, so the exact scope will depend on the system present and the access available.
Where accessible and relevant, our survey may include assessment of:
The septic tank or sewage treatment plant
Inlet and outlet arrangements
Accessible internal tank condition
Associated foul drainage pipework
Inspection chambers and connections
Drainage flow and signs of restriction
Discharge arrangements and outfalls
Drainage fields or soakaway arrangements
Visible signs of poor drainage field performance
Structural defects within tanks or chambers
Root ingress, displaced joints and other CCTV-observed pipe defects
System layout and drainage route
Apparent compliance concerns
Any inaccessible areas or survey limitations
The purpose is to build as complete a picture as reasonably possible of the accessible off-mains drainage system at the time of inspection.
Following our site visit we will compile our report and you will receive:
Professional drainage survey report
Assessment of the accessible system condition
Annotated drainage layout where possible
Relevant CCTV footage and images
Clear record of defects and observations
Identification of apparent compliance concerns
Recommended next steps where further investigation may be appropriate
Clearly documented access restrictions or survey limitations
Septic Tank Regulations & Apparent Compliance
Since the introduction of the General Binding Rules, property owners are responsible for ensuring septic tanks and off-mains drainage systems comply with current Environment Agency regulations.
Non-compliant systems can lead to environmental issues, costly remedial works, delays during property transactions and in some cases, complete system replacement.
Our septic tank surveys help identify apparent compliance concerns before purchase, giving buyers, homeowners and their professional advisers a clearer understanding of the system, its condition and the drainage arrangements observed during the survey.
What Do We Assess When Reviewing Apparent Compliance?
During our surveys, we assess key elements of the off-mains drainage system, including:
Septic tank structural condition
Sewage treatment plant operation
Discharge arrangements and outfalls
Soakaway and drainage field performance
Pipework condition and flow issues
Inspection chamber defects and accessibility
Potential non-compliance with current regulations
This allows us to identify visible defects, operational concerns and issues that may require further investigation or remedial works.
The General Binding Rules introduced changes to how septic tanks can discharge wastewater in England.
In many cases, septic tanks discharging directly into a watercourse may no longer comply with current regulations and may require upgrading or replacement with a sewage treatment plant.
During property purchases, solicitors and mortgage lenders increasingly request evidence that off-mains drainage systems are functioning correctly and comply with Environment Agency guidance.
Our surveys help identify:
direct discharge issues
ageing or defective systems
failed soakaways or drainage fields
overloaded systems
signs of poor maintenance
potential environmental risks
Identifying these issues early can help buyers avoid unexpected repair costs and make informed decisions before exchange of contracts.
Why Compliance Matters When Buying a Property
Problems with septic tanks and private drainage systems are often hidden below ground and may not become apparent during a standard property survey. A non-compliant or failing system can result in:
Expensive replacement works
Drainage field reconstruction
Environmental enforcement issues
Mortgage or conveyancing delays
Ongoing maintenance problems
Our CCTV septic tank surveys provide a clearer understanding of the condition, performance and compliance of off-mains drainage systems before purchase.
Common Issues We Identify During Septic Tank Surveys
Failed soakaway and/or drainage field
Signs of standing wastewater, saturated ground and poor drainage field performance can indicate soakaway failure and may require extensive remedial works.
Cracked or collapsed pipework
Damaged underground pipework can lead to leaks, blockages, groundwater infiltration and ongoing drainage issues.
Non-Compliant Discharge Arrangements
Some older septic tanks still discharge directly into watercourses, which may not comply with current General Binding Rules.
Root Ingress & Blockages
Tree root intrusion and silt accumulation are common causes of restricted flow and recurring drainage problems.
Structural Defects Within Tanks & Chambers
Cracked chambers, defective covers and deteriorating tank structures can affect system performance and safety.
Signs of Poor System Performance or Overloading
High liquid levels, poor flow, odours or evidence of backing up may indicate operational problems or an overloaded system and may justify further investigation.
What happens if we find a problem
If we identify a defect or concern during your septic tank survey, we clearly record the finding within your report and include supporting photographs, CCTV images or footage where appropriate. Our report explains the nature and location of the issue, together with any relevant observations about the condition of the tank, associated drainage, discharge arrangement or other accessible parts of the system.
Where appropriate, we will also highlight whether further investigation, specialist advice or remedial work should be considered. Clearflow Surveys specialises in independent drainage surveying, inspection and reporting. We do not empty, maintain or repair septic tank systems, so our role is to provide an impartial assessment of what we find rather than to sell you additional work.
You can then use the report to make an informed decision and, depending on the issue identified, discuss the findings with your solicitor, property surveyor, seller or an appropriate drainage or environmental specialist.
Why choose Clearflow Surveys?
What will happen:
Book your survey at a convenient time
We carry out a CCTV inspection on site
We produce a clear, professional report
We aim to keep the process simple and efficient so you get the information you need in a timely manner.
We regularly carry out septic tank surveys for property purchases, helping buyers understand the condition and compliance of private drainage systems.
We pride ourselves in:
✔ Clear, easy-to-understand reporting
✔ Fast turnaround on inspections
✔ Modern inspection equipment
✔ Experience with private drainage systems and compliance
Past Projects
Examples of drainage surveys carried out across Cheshire, Manchester and Staffordshire.
Septic tank survey in Lower Withington, Cheshire.
Septic tank survey in Bosley, Cheshire.
Septic tank survey in Congleton, Cheshire.
Septic tank survey in Crewe, Cheshire.
Septic tank survey in Stockport, Greater Manchester.
Septic tank survey in Warrington, Cheshire.
Frequently Asked Questions
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A septic tank survey is a full assessment of your septic system - including a CCTV survey of the inlet and outlet, a visual inspection of the tank itself and a check of whether the system meets the current compliance requirements. You receive a clear written report of everything we find.
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Septic tanks are expensive to repair or replace. With compliance rules changing significantly in 2020, a property with a non-compliant system can now create a legal and financial problem for the new owner. Without a survey, you’re taking on that risk blind.
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Yes, checking compliance with the current general binding rules is part of what we assess. If the system isn’t compliant, we’ll clearly set that out in the report along with what would be needed to bring it in line.
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We carry out a full assessment covering a CCTV inspection of the inlet and outlet, a check of the drainage field where accessible and a compliance review against current Environment Agency requirements. You receive a written report with findings and recommendations.
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We’ll set out clearly what’s been found and what the options are. Many buyers use this to negotiate the purchase price or make the sale conditional on the seller resolving the issue first. In some cases it’s grounds to walk away before you’re committed.
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It varies significantly depending on the issue. Upgrading a direct discharge system to a water treatment plant can cost upwards of £10,000, depending on ground conditions and access. Getting a survey before you buy means you know what you’re dealing with before it’s your bill.
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Most residential septic tank surveys take two to three hours on site depending on access and the complexity of the system. Your written report will follow shortly after.
Need a Septic tank Survey?
Get a fast, reliable drainage report from an experienced team.