Harlequin Hydroclear HC12 Sewage Treatment Plant - 12 Person

Harlequin Harlequin Hydroclear HC12 Sewage Treatment Plant - 12 Person
Harlequin Harlequin Hydroclear HC12 Sewage Treatment Plant - 12 PersonHarlequin Harlequin Hydroclear HC12 Sewage Treatment Plant - 12 Person

Product Description

Harlequin Hydroclear 12 Sewage Treatment Plant - 12 Person

This Hydroclear 12 sewage treatment plant from Harlequin is suitable for a population of 12. Producing an excellent pollutant removal level of 97%, wastewater from bathrooms, toilets, laundry and kitchens feed directly into the HydroClear 12 treatment plant. From here it travels through 3 treatment chambers, finally being discharged through either a soakaway or directly into a stream.

Easy to both install and maintain with low operating costs, and only needs desludged every 12 months, depending on occupancy. The Hydroclear pump chamber includes a pump for pumping treated effluent to a discharge point. The standard invert depth of the Hydroclear is 1.0m, this can be increased if required, please enquire.

Standard treatment plant is emptied via gravity.  A pumped outlet is available at additional cost.


  • Population Served: 7 to 12
  • Max. Hydraulic Load (litres /day): 2400
  • Organic Load (g BODs/day): 720
  • NH3 (g/day): 96
  • Total Capacity (litres): 5950
  • Length (mm): 4500
  • Width (mm): 1400
  • Height to Ground Level (mm): 2450
  • Empty Plant Weight (kg): 550
  • Energy Usage (kWh/day): 2.5
  • Desludging Interval (months): 9
  • Compliant with EN-12566 part 3: Yes
  • Inlet Depth (mm): 1000
  • Outlet Depth (mm): 1050
  • Installation Depth (mm): 2450

Product Code: HC12

Lead Time - Approx 3-4 weeks

from £2800.00 ex VAT
(£3,360.00 inc VAT)
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Delivery Options
  • FREE STANDARD Delivery for HARLEQUIN Tanks - Via articulated lorry, customer to off-load (Postcode exclusions apply to Highlands & Islands)

Certain postcodes in Wales, Scotland, highlands and Islands may have additional charges, please click here to check your postcode

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Capacity: 5950 litres

Dimensions (l x w x h): 4500mm x 1400mm x 2450mm

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pdfHarlequin Hydroclear Brochure

pdfHarlequin Hydroclear 12 Technical Drawing

Item: HQ

Returns Information

Customers may return items within 14 calendar days (as per our Terms & Conditions) - refer to 4.6 & 4.7. **

Please be aware that returning a tank can be complicated and expensive so please check that you are ordering the correct item (we suggest checking the dimensions very carefully).

Delivery Information


The delivery of a tank can be confusing as each manufacturer offers a slightly different service and lead time. Please refer to our Delivery Information page.  Standard tank deliveries are "kerbside" which means the tank will be delivered to the kerb only and not positioned further. Should you have specific delivery requirements or restrictions, please contact us to discuss.


Most accessories will be delivered within 1-3 working days. If you require them quicker, we can on occasions offer a next day service (please contact us to discuss). If the item(s) are out of stock we will advise you of the expected lead time and you will of course have the opportunity to cancel with a full refund.