The Hidden Costs of Private Drainage Systems: Why a Specialised Survey is Essential

Off-mains drainage systems, such as septic tanks, are a common solution for properties not connected to the public sewer. However, these systems come with specific rules and regulations that homeowners must follow to avoid costly upgrades and potential legal issues.

Understanding Off-Mains Rules for Septic Tanks

In the UK, off-mains regulations require that septic tanks discharge waste into a drainage field rather than directly into a watercourse. This is because septic tanks do not treat waste; they merely separate solids from foul water.

The drainage field allows for further treatment of the water as it filters through light, aerated soil. This process facilitates nutrient uptake and ensures a safer interaction between the soil and wastewater.

If a septic tank discharges directly into a watercourse, it must either:

1. Be upgraded to a package treatment plant that meets the binding rules, or
2. Obtain a permit from the Environment Agency if it does not meet these rules.

Failure to comply could result in fines, pollution of nearby watercourses, and complications during property sales.

When Upgrades Are Necessary

Many existing septic tanks that discharge into surface water will need to be upgraded or replaced with small sewage treatment plants. The increasing demand for compliance information during property sales has made it essential for homeowners to ensure their systems meet current standards.

Common Issues Revealed in Homebuyer Surveys

A homebuyer’s survey may uncover several issues with private drainage systems:

• The system may be completely outdated and require a significant upgrade.
• An incorrect system may be in place for the property’s needs.
• Changes in the surrounding area might have caused the system to become a pollution hazard.
• The system may no longer meet updated regulations or binding rules.
• Illegal cesspit discharges, particularly in non-porous soil (e.g., clay), could be polluting nearby land or woods.

In some cases, properties with no suitable ground for drainage fields or main drains may need regular sewage tanker services, adding an ongoing expense.

Why Choose ASL Drains for Your Survey

A specialised drainage survey can help avoid last-minute obstacles in property transactions. At ASL Drains, our professional surveys provide comprehensive reports that include observations, photos, and videos, giving you a clear understanding of the system’s compliance with environmental binding rules.

Key Features of Our Surveys

• Detailed Reporting: Our surveys provide a thorough review of the system’s condition, identifying cracks, damage, and compliance issues.
• Transparent Pricing: Surveys are charged at £140 per hour plus VAT. If serious issues are uncovered, additional time will be requested with your approval.
• Clear Recommendations: We provide detailed findings, actionable recommendations, and quotes for necessary work to ensure compliance.

Knowing whether a system is compliant can significantly aid negotiation during property sales. Installing a modern package treatment plant can be costly, and having this information upfront allows for informed decision-making.

CCTV Drainage Surveys

For a deeper insight into your drainage system, consider our CCTV drainage surveys. These advanced inspections provide real-time video analysis to detect hidden problems, such as blockages or structural damage.

Selling a Property with a Private Sewage System

Preparing a private drainage system for sale is critical to avoid unexpected costs or renegotiations. At ASL Drains, we work closely with homeowners and buyers to provide:

1. A thorough review of the system.
2. A detailed report for both parties.
3. A quote for any required work to make the system compliant.

Get in Touch

Whether you’re looking to ensure compliance, prepare for a property sale, or address existing drainage issues, ASL Drains is here to help. Contact us at 0800 0488 701 to schedule a survey or learn more about our services.
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