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25 Person Clearwater BioAir 7 Sewage Treatment Plant (Gravity)

Regular price
£5,580.00 (£4,650.00 ex VAT)
Regular price
Sale price
£5,580.00 (£4,650.00 ex VAT)
Est. delivery 10 - 12 working days
Inlet invert

The 25 person BioAir 7 sewage treatment plant by Clearwater (CW7) is a cost-effective solution for the treatment of wastewater for domestic properties. 

It can be installed for use in places such as homes, small offices and farms. This tank requires a shallow dig installation depth, which will save you time and money. Low impact visual finish. Advanced aeration technology is used to treat the effluent effectively. 

Available with 0.5m, 1m, 1.5m and 2m inlet inverts.


  • Easy to install
  • Lightweight, robust design
  • Advanced aeration technology
  • Cost-effective
  • Shallow dig installation

1 year warranty*


View datasheet here

View product drawing here

*T's&C's apply

Full Description

This 25 person BioAir 7 sewage treatment plant by Clearwater offers exceptional performance by using superior aeration technology. It provides a cost-effective solution to the processing of wastewater for a variety of applications. These include single and multiple homes, small offices, farms and barn conversions. Once installed, this tank has minimal visual impact, leaving it a discreet yet effective product.

How does it work?
Investing in this BioAir sewage treatment plant will allow you to remove contaminants from sewage and ensure that effluent water is removed effectively and efficiently. Clearwater BioAir sewage systems offer a modern alternative to other methods of sewage treatment.

There are 3 stages to the treatment process; aeration, settling phase and clear water extraction. The wastewater enters the tank and is filtered using high-performance aeration technology. The sludge then settles at the bottom of the tank, and the remaining clear water is extracted and drained in a soakaway or other drainage method

Technical Specification

No. of people: 25

Weight (kg): 1250-1290kg

Height (mm): 2245-3745mm

Material: GRP

Inlet Invert: 500-2000mm

Depth (mm): 5500mm

Daily Flow (m3/day): 3.75m3/d

Width (mm): 1920mm

Contact Us

Our team of experts are available and ready to speak to you. You can contact us or call us directly on 0121 351 3230. Available Mon-Friday 8am-5pm.

Further questions?

Our team of specialists are here to help. We install many of our products so can provide real-world advice. We also offer a free take-off service if required.

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