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Harlequin HGRP6 Hydroclear Sewage Treatment System (up to 6 person) | HGRP6/EC

£2,678.00
£3,213.60 (inc VAT)
£2,678.00 (exc VAT)

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Product Description

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

 

The HydroClear GRP 6 (HGRP6) is expertly crafted from high-strength glass-reinforced polyester (GRP) to efficiently treat wastewater from bathrooms, toilets, laundry, and kitchens. Once processed, the wastewater is safe and clean enough to be discharged directly into natural watercourses like rivers or streams, or into drainage fields. Boasting a lifespan of over 20 years, the HGRP6 offers long-term reliability and peace of mind. Compact and robust, the HGRP6 achieves an impressive 97.5% pollutant removal rate with minimal maintenance. Its ease of installation, cost-effectiveness, and quiet operation make it ideal for a variety of applications.

 

Available in both gravity and pumped outlet models, the HGRP6 features an external compressor housed in a weatherproof enclosure for optimal performance. An internal compressor option is also available. This slim-profile system includes a 2-year warranty (valid upon product registration on our website) and is fully certified for use in the UK, meeting EN12566-3 standards.

 

Tank Specifications:

HydroClear Model: HGRP6
Population Served: 1 to 6
Max. Hydraulic Load (litres /day): 900
Organic Load (g BODs/day): 310
Total Capacity (litres): 2705
Length (mm): 2425
Width (mm): 1325
Height to Ground Level (mm): 1640
Empty Plant Weight (kg): 200
Energy Usage (kWh/day): 0.8
Blower rating (watts): 76
Desludging Interval (months): 12
Compliant with EN-12566 part 3: Yes
Inlet Depth (mm): 500
Outlet Depth (mm): 575
Installation Depth (mm): 1640
Pipe Diameter: 110

 

 

Harlequin Hydroclear GRP Leaflet

Harlequin Hydroclear 6 GRP Drawing

Harlequin Hydroclear 6 GRP Specification

Harlequin Hydroclear GRP Install Guide

 

SKU: HGRP6/EC

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CUSTOMER REVIEWS

Rated 4.8/5 by Direct Drainage Customers

Based on over 600 verified reviews

VERIFIED REVIEW

Very helpful from the start to the finish

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

Title

North Hayne Farm Cottages | 26 June 2026

VERIFIED REVIEW

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.

Title

Sam Jukes | 5 November 2025

VERIFIED REVIEW

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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Eve Harland | December 2025

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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.