Compliance Surveys

Compliance Surveys

Selling, buying, or remortgaging a property with off-mains drainage?

Our drainage compliance survey gives you a clear, independent assessment for your septic tanks, treatment plants and drainage systems. With our survey, you'll know whether your system meets the Environment Agency's General Binding Rules, backed by a formal written report you can use with mortgage lenders, solicitors, and the Environment Agency.

Overview

A drainage compliance survey, also known as a foul drainage report, is an inspection of an off-mains drainage system conducted by a professional. The survey is commonly needed when selling, buying or remortgaging a property, entering an equity release scheme, or simply for peace of mind.

This survey effectively confirms whether your septic tank or sewage treatment plant is operating lawfully under England's General Binding Rules (GBR).

The WCI Difference - Wastewater Expertise

Honest, Clear Reporting

We tell you what’s wrong, why it matters and what fixing it costs. No nonsense straight talk based on professional knowledge, not sweeping statements or overstated problems. Our reports help you make informed decisions, not just list observations.

Regulatory Knowledge

Understanding Building Regulations, Environment Agency Permitting Regulations, General Binding Rules, discharge permits, and planning constraints allows us to assess not just whether systems work but whether they’re legally compliant.

Independence & Objectivity

We provide unbiased assessments and survey systems we didn’t install. If there are issues, we report them honestly. Our reputation depends on accuracy, not just telling clients what they want to hear.

Solutions-Focused

When our surveys identify problems, we provide practical solutions and realistic costs. As part of WCI Group, we can deliver any remedial or replacement work in-house if you choose to proceed.

Our Survey Process

Our drainage compliance survey is conducted by our qualified Water & Wastewater engineers with direct experience of the Environment Agency's GBR. They understand what should be there, how it should work, and what problems look like. Each survey takes between 1-2 hours and follows a structured process:

1

Initial Instruction & Pre-Visit Review

First, we understand your requirements and the survey purpose (buying, selling, remortgaging, assessment). Then gather property information and review any existing system documentation with a desktop survey.

 

2

System Survey & Emptying

Next, we locate, access, and visually inspect your septic tank or sewage treatment plant system in-person. We check that only foul water is entering the system, with no rainwater ingress, and thoroughly assess its condition, construction type, inlet and outlet arrangements, and capacity relative to the property’s occupancy. Where needed, the tank is emptied on-site to confirm this; we don’t offer emptying ourselves but can arrange it through one of our trusted local partners. Surveys typically take 1-2 hours.

 

Discharge Point Verification
3

Discharge Point Verification

We then confirm whether the system discharges to the ground via a soakaway or drainage field, or to a watercourse or surface water drain.

4

Foul Drainage Report

Following the on-site survey, you will receive a written report confirming the compliance status within 5 working days. The report describes any issues identified, the recommended remedial or replacement options, and indicative costs. It will be suitable for solicitors, mortgage lenders, estate agents, and the Environment Agency to use.

When Would You Need A Compliance Survey?

Our surveys give buyers the confidence they need to understand what they're purchasing, and help sellers address problems before they affect sales negotiations. The report can also be used as proof of compliance for lenders, or simply for peace of mind.

You receive clear, honest reporting, backed by 40+ years of wastewater expertise that provides the information that property transactions require.

 

Property Purchase Protection

Drainage surveys identify problems before you commit to purchase. Failed systems, non-compliant discharges, inadequate capacity. Understanding these issues before exchange allows informed decisions and negotiation.

 

Avoid Expensive Surprises

Replacing failed drainage systems can cost thousands. Compliance surveys reveal these issues during purchase negotiations, not months after moving in when they become your expensive problem.

 

Vendor Transparency

Sellers benefit from surveys identifying problems they can address before marketing or explain honestly to buyers - preventing deal collapses when buyers' surveys reveal hidden issues.

 

Mortgage & Insurance Requirements

Some mortgage lenders require drainage surveys before lending on properties with private sewage. Compliance surveys provide the documentation lenders need for approval.

 

Building Control & Environment Agency Compliance

Properties must comply with Building Regulations and Environment Agency General Binding Rules. Compliance surveys identify non-compliance and advise on rectification, protecting buyers from enforcement action.

 

Maintenance Planning

Even functioning systems require maintenance. Surveys identify service needs, helping new owners budget for ongoing costs and preventing problems through neglect.

 

Who Needs a Compliance Survey?

Home Buyers

Having a homebuyer drainage survey protects you from taking on a non-compliant or failing system. Drainage is rarely covered in a standard RICS building survey, and a non-compliant system can cost thousands to upgrade. By conducting a professional independent septic tank inspection before an exchange, you will know exactly what you are buying.

 

Home Sellers

If you're selling a property with a sewage treatment plant or septic tank, your solicitors will need the results of a compliance survey to protect you during the sale. Without it, the buyers' solicitors may raise pre-completion enquiries that delay or prevent the sale.

Estate agents in rural areas increasingly recommend commissioning a survey before listing, as it removes a common cause of last-minute renegotiation and demonstrates GBR compliance.

 

Estate Agents

Agents marketing rural properties benefit from arranging compliance surveys addressing buyer concerns early and demonstrating vendor transparency.

 

Mortgage Lenders (and Borrowers)

Many mortgage lenders operating in South West markets now require a foul drainage report as part of lending on properties not connected to a mains sewer. If your lender has requested a drainage compliance survey, our team can produce a report in the format needed. Simply contact us today with your lender's specific requirements to get started.

 

Solicitors

Legal advisors acting for buyers or sellers who need professional drainage assessment informing transaction advice and negotiations.

 

Property Investors

Investors assessing rural property portfolios or development opportunities need accurate understanding of drainage infrastructure condition and compliance for investment decisions.

 

What Happens If Your System Is Non-Compliant?

If our survey concludes that your system does not meet the GBR, this isn't cause for panic, but should be addressed. Depending on the issue, this might mean straightforward repairs, such as replacing manhole lids to make access safe, or a full system upgrade, for example replacing a septic tank discharging to a ditch with a sewage treatment plant. Where your non-compliance is time-sensitive, for example if you're mid-way through a property sale, we'll help prioritise the work or give a cost estimate for you to negotiate with your buyer to keep things moving.

If you decide to proceed with any recommended works, we can help. We operate as a full-service water and wastewater engineering company, so we can move directly from survey to specification, installation, and sign-off without the need to appoint a third-party contractor, so you're not left navigating the problem alone.

Why Choose WCI?

The team at WCI Group have been delivering water and wastewater engineering services across the South West of England since 1983. Our compliance surveys are conducted by the same experts who design, install, and maintain off-mains drainage systems, meaning our reports reflect practical, real-world experience rather than a checklist inspection.

We are one of the very few companies in the region that conduct these services under one roof. If your survey reveals a non-compliant system, we can provide a fully costed remediation proposal at the same time as delivering the report, saving you time and money where delays are costly.

We operate primarily in Somerset, Devon and Dorset where off-mains drainage is more common. If your property is outside this area, contact us directly to discuss availability.

Accreditations & Compliance

WCI has been operating for 40+ years, relying on extensive experience that includes our understanding of current General Binding Rules (GBR). We produce reports that solicitors and lenders will accept thanks to our industry experience and accreditations.

Across the group, we hold accreditations and certifications, including British Water, SafeContractor, and ICE. These are recognised by the Environment Agency, solicitors, and mortgage lenders, solidifying our years of professional competency.

Are You Compliant?

Professional drainage compliance surveys provide clarity and confidence for property transactions involving private sewage - clear assessment identifying issues, compliance status, and realistic costs.

Frequently Asked Questions