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CAP15 Sewage Treatment Plant




The Harlequin CAP15, compact sewage treatment plant, is specifically designed to treat domestic sewage in a simple and compact system making sure it is safe to be discharged into a watercourse such as a river or stream. It is suitable for domestic installations of up to 15 people. With a life expectancy of over 20 years, you can enjoy absolute peace of mind.


We currently ship within the UK only. 

Product Advice
Do you need advice on sizes, compatibility and configuration? Contact our knowledgeable team for free advice. 

If you are not satisfied with your purchase you can return it to us within 14 days for an exchange or refund. More info.

Contact us on 01942 247 000, or email us at



Single Riser Kit, Twin Riser Kit, Triple Riser Kit

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CAP15 Sewage Treatment Plant


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