Activated sludge process (ASP)

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Built to last ASP sewage treatment plant
Built to last

Leak-proof designs.
Robust and durable polyethylene shells.
1000’s of installations.

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Economical option

Easy to install.
Low running costs.
Minimal environmental impact. 

Compact and discreet asp sewage treatment plant
Compact and discreet

Blends into your landscaping or garden.
Quiet operation. 

The sewage treatment plant for small applications

Rewatec ASP sewage treatment plant

The Rewatec ASP (formally known as the Conder ASP) is a small sewage treatment plant that provides superb value for money. With low installation and maintenance costs and a robust and durable design, the ASP is the perfect solution for both residential and commercial projects. 

Available in polyethylene, the ASP range services a population from 6 to 25 people. 

Example applications

  • single houses 
  • small communities or developments 
  • small commercial applications 


 How does the ASP work?

Rewatec sewage treatment plant ASP operation

The ASP sewage treatment plant comprises of a single tank. Within this tank there is an inner central biozone chamber and an outer settlement zone.  

The wastewater flows into the tank and settles in the central biozone chamber. The wastewater is aerated through the central diffuser. 

The water then enters the outer settlement zone prior to discharge where a gravity or pumped discharge can be specified. 


Rewatec ASP maintenance

We have a network of local service partners to maximise the life of your Rewatec ASP sewage treatment plant and to provide years of reliable operation. 

Installation of the Rewatec sewage treatment plant ASP


We stand by our products 

Rewatec 5 year warranty icon

For over 50 years, we have proudly developed sustainable and long-lasting products that make a real difference for our customers, our professional partners, and, above all, our planet. 

Our experience in the industry allows us to give you a 5-year warranty for Rewatec ASP sewage treatment plants and a 12-month internal parts warranty. 

Training programmes 

​​​​​​At Premier Tech we provide a full range of training programmes to fully meet the requirements of our professional partners. If you require product functionality guidance or a more detailed training course for installations, we can provide a solution to meet your needs.   

Contact us for more information


Available products

All products are available for populations of 6 to 25 people. 

Free quote

We are here to help. Request a quote today and our team of experts will be in touch. 

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