Activated sludge process (ASP) domestic sewage treatment plant

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The domestic sewage treatment plant

Manufactured in Ireland, 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 sewage treatment plant for domestic use and for smaller commercial projects. 

Available in robust glass reinforced plastic (GRP), the ASP sewage treatment plant services a population from 6 to 8 people (PE).

Example applications

  • single houses
  • small communities or developments
  • small commercial applications
Rewatec ASP sewage treatment plant



How does the ASP work?

The ASP is a sewage treatment plant for residential buildings and it 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 operation


Rewatec ASP maintenance

Protect your investment in your Rewatec ASP by having it regularly inspected by Premier Tech.

The frequency of service depends on the size of your tank, the amount of wastewater your property generates, and the environmental regulations in your area. It is best to speak with us to determine servicing that is right for you.


We stand by our products

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 12 month warranty for Rewatec ASP sewage treatment plants.

Visit our office

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

Contact us to find out more


Available products

All Rewatec ASP sewage treatment plants are available for populations of 6 to 8 people.


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