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Clearwater BioAir Sewage Treatment System (up to 20 person) | CW6

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Email us: sales@direct-drainage.co.uk
Call Us: 01388 537 050

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This product is delivered directly from the supplier, lead times vary.

 

The Clearwater BioAir CW6 Sewage Treatment Plant is designed to provide reliable and effective wastewater treatment for properties with a population equivalent of up to 20 people. Utilising advanced aeration technology, the BioAir CW6 significantly improves effluent quality before discharge, achieving up to 97.5% BOD₅ reduction and helping meet environmental discharge requirements.

 

Constructed from durable GRP (Glass Reinforced Plastic), the CW6 offers excellent corrosion resistance, long service life, and a lightweight design for easier transportation and installation. Its flexible design allows for shallow dig installations, reducing excavation requirements and installation costs. The system also maintains a low visual impact, making it suitable for domestic properties, commercial sites, and rural developments.

 

Third-party tested to EN 12566-3, the Clearwater BioAir CW6 provides dependable performance and straightforward operation. Each unit is supplied with an isolator switch as standard, while a high-level alarm is available as an optional upgrade for IPS installations. Affordable service plans are also available to help ensure optimal performance throughout the life of the system.


Key Features

  • Suitable for up to 20 persons
  • Advanced aeration technology for superior wastewater treatment
  • Up to 97.5% BOD₅ reduction
  • Suitable for shallow dig installations
  • Suitable for installation in traffic areas (subject to structural design requirements)
  • Low profile, discreet installation
  • Third-party tested to EN 12566-3
  • Easy to install, operate, and maintain
  • Supplied with isolator switch as standard
  • Optional high-level alarm available
  • Robust yet lightweight GRP construction
  • Affordable service plans available
  • 12-month manufacturer's warranty (terms apply)

 


Applications

The Clearwater BioAir CW6 is ideal for larger residential homes, small commercial premises, holiday parks, guest houses, community facilities, and other off-mains drainage applications requiring dependable sewage treatment for up to 20 users. With its compact footprint, excellent treatment efficiency, and straightforward installation, the CW6 is a cost-effective and environmentally responsible wastewater treatment solution.

 

 Clearwater BioAir Data Sheet
Clearwater BioAir 6 Gravity Drawing
Clearwater BioAir Blower & Duct Vent Drawing
Clearwater BioAir Installation & Operation Guidelines
Clearwater BioAir PIA Certificate 
Clearwater BioAir 6 Neck Extension
Kingspan Extended Warranty

 

SKU: TANBIOAKLA029

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North Hayne Farm Cottages | 26 June 2026

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Cheapest price I could find for the pump

Cheapest price I could find for the pump and delivery the next day what more could you want.

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Great service!

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FAQs

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When will my order be dispatched?

Spare Parts Shipping
We ship in-stock spare parts the same day if ordered before 3pm. These orders are sent with DPD as standard and will be shipped on a Tracked Next-Day service.


Tanks & Supplier-Shipped Items

Tanks and certain spare parts are shipped directly from our suppliers. We aim to submit supplier orders to the supplier on the same day your order is placed to ensure prompt processing. 

How much is delivery?

Delivery costs vary depending on the type of product:

 

In-stock Spare Parts: £8.20 - shipped via DPD on a Tracked Next-Day service.
Supplier-shipped Spare Parts: £15 - dispatched directly from the supplier.
Tanks and Sewage Treatment Systems: Free Delivery to most mainland UK postcodes.

 

All delivery charges are calculated accurately at checkout.

I need help with placing my order.

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Live Chat: Click the chat icon on the bottom right of the page to speak with our team instantly.
Call Us: Reach us at 01388 537050 during business hours for quick support.
Email: Send your query to sales@direct-drainage.co.uk, and we’ll respond promptly.

Do you stock all tanks and sewage treatment systems?

We do not stock tanks and treatment systems as standard. These are supplied directly from the manufacturer. The lead times of these systems will vary. If you need an accurate delivery date, please contact us on 01388 537050.

Are your prices inclusive of VAT?

It is important to note that all prices listed on our website exclude VAT. VAT will be calculated at checkout. 

I've found the same item somewhere cheaper, can you match the price?

We always aim to offer competitive pricing. If you've found the same item cheaper elsewhere, let us know — we'll do everything we can to match or even beat the price.

 

Contact us directly on 01388 537050 or drop us an email at sales@direct-drainage.co.uk.