Description

Above Ground Effluent Tanks: A Complete Guide

When managing wastewater on domestic, commercial, or industrial properties, one of the most reliable solutions available is the above ground effluent tank. Designed for safe and effective containment of liquid effluent, these tanks play a crucial role in ensuring environmental protection, regulatory compliance, and hassle-free waste management. Whether you are a homeowner in a rural location, a construction site manager, or an operator of temporary facilities, above ground effluent tanks provide a practical and cost-efficient way to handle wastewater.

This guide explores everything you need to know about above ground effluent tanks—from how they work, their key benefits, installation requirements, and maintenance best practices, to frequently asked questions.

What Are Above Ground Effluent Tanks?

An above ground effluent tank is a sealed storage container designed to hold wastewater and liquid effluent until it can be removed by a licensed waste carrier. Unlike underground septic tanks, these tanks sit above the surface, making them easier to install, access, and maintain. They are widely used where underground installation is not feasible due to site conditions, planning restrictions, or short-term use requirements.

Effluent tanks are often manufactured from durable materials such as:

• GRP (Glass Reinforced Plastic): Lightweight, corrosion-resistant, and long-lasting.

• Polyethylene (Plastic): Cost-effective and robust against environmental wear.

• Mild or Stainless Steel: Used in heavy-duty or industrial settings requiring extra strength.

Sizes range from 1,000 litres for small domestic use to over 10,000 litres for large-scale operations.

Benefits of Above Ground Effluent Tanks

1. Ease of Installation

No excavation is needed. Simply prepare a stable, level base and connect to your system. This significantly reduces installation time and cost.

2. Portability

Above ground effluent tanks can be relocated with relative ease. This is particularly beneficial for temporary setups such as festivals, construction sites, or seasonal businesses.

3. Accessibility

Because the tank is above ground, inspection, emptying, and maintenance are much simpler compared to underground options.

4. Cost Efficiency

Eliminating groundwork means you save on excavation, backfill, and reinstatement costs.

5. Compliance & Safety

Manufactured to meet environmental standards, above ground tanks help prevent contamination of soil and watercourses.

Typical Applications

• Construction Sites: Containment of wastewater from welfare facilities.

• Events and Festivals: Temporary sanitation solutions for large gatherings.

• Rural Properties: Where soil conditions or regulations prevent underground tanks.

• Industrial Operations: Managing liquid waste from processing or cleaning.

• Emergency Situations: Providing quick wastewater storage in disaster recovery zones.

Installation Considerations

When installing an above ground effluent tank, there are several factors to keep in mind:

1. Base Preparation – The tank should sit on a level, reinforced concrete or compacted hardcore base.

2. Capacity Planning – Always choose a tank size that matches expected effluent output and emptying frequency.

3. Access for Emptying – Position the tank where vacuum tankers can easily access it.

4. Ventilation – Ensure proper venting to avoid odours and pressure build-up.

5. Local Regulations – Check planning and environmental compliance in your area.

Maintenance Best Practices

• Regular Emptying: Prevent overflows by scheduling regular pump-outs.

• Inspection: Check for cracks, leaks, or structural issues periodically.

• Cleaning: Wash down the interior after emptying to reduce odour and build-up.

• Record Keeping: Maintain logs of waste disposal for regulatory compliance.

• Professional Servicing: Use licensed waste carriers for emptying and ensure compliance with UK Environment Agency or local equivalent standards.

FAQs About Above Ground Effluent Tanks

1. How often should an above ground effluent tank be emptied?

The frequency depends on tank size and usage. For domestic applications, emptying may be required every 4–6 weeks. For commercial sites, it could be weekly or even daily. Always monitor capacity and schedule collections accordingly.

2. Are above ground effluent tanks environmentally safe?

Yes. When manufactured and maintained correctly, they are completely sealed to prevent leaks and groundwater contamination. They also comply with environmental regulations in the UK and EU.

3. Can I use an above ground effluent tank permanently?

Yes, although they are often chosen for temporary use. With proper maintenance and positioning, they can be a long-term solution, especially where underground installation is impractical.

4. What size effluent tank do I need?

This depends on usage and site requirements. For a single household, 2,000–3,000 litres may be sufficient. For construction sites or events, 5,000–10,000 litre tanks are commonly used. Always calculate based on the number of users and emptying schedule.

5. How much does an above ground effluent tank cost?

Prices vary by size and material. Small plastic tanks may cost a few hundred pounds, while large GRP or steel models can run into several thousand. Remember to budget for transport, installation, and emptying costs.

Conclusion

Above ground effluent tanks are a versatile, cost-effective, and environmentally responsible solution for wastewater management. Their ease of installation, portability, and compliance with environmental standards make them ideal for domestic, commercial, and industrial use. Whether for a permanent rural property or a temporary construction site, investing in a high-quality above ground effluent tank ensures safe containment and peace of mind.

When selecting a tank, consider your site conditions, capacity needs, and maintenance requirements. Always work with trusted suppliers and licensed waste carriers to ensure your system remains efficient and compliant.

References

• UK Environment Agency: Wastewater and Sewage Disposal Regulations

• British Standards Institution (BSI) – BS EN 12566: Small Wastewater Treatment Systems

• European Environmental Directives on Waste Management