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Harlequin Hydroclear Sewage Treatment System (up to 6 person) | HC6

£2,120.00
£2,544.00 (inc VAT)
£2,120.00 (exc VAT)

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Product Description

This product is delivered directly from the supplier, lead times vary.

The Harlequin HC6 Hydroclear sewage treatment system from Harlequin has an excellent pollutant removal level of 97%. Maintain with low operating costs and annual desludging, depending on occupancy. The standard invert depth of the Hydroclear is 1.0m, this can be increased if required, please enquire.

 

Harlequin Hydroclear HC 6 Specification

  • Population: 1 to 6
  • Max. Hydraulic Load (litres /day): 1200
  • Organic Load (g BODs/day): 360
  • NH3 (g/day): 48
  • Total Capacity (litres): 4440
  • Length (mm): 3400
  • Width (mm): 1250
  • Height to Ground Level (mm): 2450
  • Empty Plant Weight (kg): 450
  • Energy Usage (kWh/day): 1.8
  • Desludging Interval (months): 12
  • Compliant with EN-12566 part 3: Yes
  • Inlet Depth (mm): 1000
  • Outlet Depth (mm): 1050
  • Installation Depth (mm): 2450

 

Why choose a Harlequin Hydroclear HC 6?

  • Silent High performance diaphragm blowers are used and externally housed achieving a virtually silent operation.
  • Oudourless The system is hermetically sealed, coupled with a market leading treatment performance eliminates odour.
  • Unblockable Moving Bed Biological Reactor (MBBR) systems are self-cleaning and unable to become blocked through channelling unlike most fixed film media systems.
  • 96.6% Pollutant removal Producing an excellent 96.6% pollutant removal level, the final effluent can be directly discharged into a stream or soakaway.
  • Cheap maintenance Chamber 1 capacity is as much as 66% larger than other plants, making desludging intervals up to three times longer saving the owner significant costs.
  • Septic Tank Backup The system keeps performing as a Septic Tank in the event of a power failure.

 

Other sizes in the Harlequin Hydroclear Range

Harlequin Hydroclear HC9 - up to 9 people

Harlequin Hydroclear HC12 - up to 12 people

Harlequin Hydroclear HC20 - up to 20 people

 

Harlequin Hydroclear Install Guide
Harlequin Hydroclear HC6 Specification

 

 


SKU: TANHYDRHAR001

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Very helpful from the start to the finish

Items were despatched quickly and arrived the next day. Would recommend.

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North Hayne Farm Cottages | 26 June 2026

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Cheapest price I could find for the pump

Cheapest price I could find for the pump and delivery the next day what more could you want.

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Sam Jukes | 5 November 2025

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Great service!

I ordered a septic tank it was delivered within a week and the delivery driver left it in the exact right place and time. Would definitely use this company again, thanks so much.

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FAQs

From choosing the right treatment plant to installation, maintenance and UK regulations, we've answered some of the most common questions to help you find the right solution for your property.

What is the difference between a septic tank and a sewage treatment plant?

A septic tank separates solids from wastewater before allowing the liquid to drain into a suitable drainage field. A sewage treatment plant goes a step further, using biological processes to treat wastewater to a higher standard before discharge. Sewage treatment plants are often the preferred choice where improved treatment performance is required.

What size sewage treatment plant do I need?

The correct size depends on the number of people your property is designed to accommodate, the expected wastewater flow and the type of property. Sewage treatment plants are commonly rated by Population Equivalent (PE). It's important to select a system with sufficient capacity to handle your property's requirements. Our team can help you choose a suitable system.

Do sewage treatment plants need electricity?

Most sewage treatment plants require electricity to operate components such as air blowers, pumps or control systems. However, power consumption varies depending on the manufacturer and model. Some systems use low-energy technology to help minimise running costs. Always check the individual product specifications before purchasing.

How often does a sewage treatment plant need emptying?

Sewage treatment plants require periodic desludging to remove accumulated solids. This is commonly carried out at least once a year, although the frequency depends on the system, usage and manufacturer's recommendations. Regular servicing and maintenance are also essential to maintain performance and help prevent costly breakdowns.

Do you supply replacement parts for sewage treatment plants?

Yes! At Direct Drainage, we supply a wide range of sewage treatment plant spare parts, including air blowers, diaphragms, filters and other essential components. Whether you're carrying out routine maintenance or replacing a faulty part, our team can help you identify a suitable replacement for your system.

Do you stock all tanks and sewage treatment systems?

We do not stock tanks and treatment systems as standard. These are supplied directly from the manufacturer. The lead times of these systems will vary. If you need an accurate delivery date, please contact us on 01388 537050.

Are your prices inclusive of VAT?

It is important to note that all prices listed on our website exclude VAT. VAT will be calculated at checkout.