Honey Hill: Comprex Impulse Cleaning

Impulse Cleaning at Honey Hill

IES Utilities Group is delivering a step-change innovation to the UK water sector through introducing Comprex® Impulse Cleaning. It’s patented, computer-operated, trenchless cleaning solution is new to the UK, yet proven across Europe. It offers class-leading cleaning performance, minimal environmental impact, unparalleled safety, and outstanding commercial value.

This low-disruption, high-performance system removes sediment, biofilms, and mineral deposits from pressurised water pipes without the need for chemicals, excavation, or high-water use. The process uses carefully modulated medical grade air and water pulses to deliver results that far exceed traditional methods in both quality and longevity.

Comprex Case Study

The Challenge

Many UK water companies are undertaking extensive mains renewal programmes during AMP8, driven by the need to tackle leakage, frequent bursts, or persistent water quality issues. These programmes often come with significant cost and disruption.

At the same time, water networks face growing pressure to improve water quality, reduce operational carbon, protect ageing infrastructure, and enhance the customer experience.

Where pipes are still structurally sound, some companies are exploring an alternative approach: using Comprex Impulse cleaning to target sections with water quality concerns. This method can extend the life of existing pipes, reduce disruption, and deliver significant savings compared to a full replacement.

This shift in thinking creates opportunities to clean large areas of the drinking water distribution network, while staying within the original mains replacement budgets.

Traditional cleaning methods, like flushing, ice pigging, or mechanical scraping, can be:

  • Water-intensive and environmentally costly
  • Repetitive and labour-heavy
  • Disruptive to communities and highway users
  • Limited in efficacy (requiring repeat cycles every 6–12 months)

What the industry needs is a safer, smarter, low carbon alternative – like Comprex.

The Innovation: Comprex® Impulse Cleaning

Comprex® is a patented, computer-controlled cleaning system that uses short, pulsed bursts of medical grade air and water to create high shear velocities (up to 20 m/s) inside pipes. This energy detaches biofilms, sediments, and hardened deposits, restoring internal conditions and flow to near-new standards.

Why Comprex® is class-leading:

  • DWI-approved and safe for use in potable water systems
  • No chemicals, no over-pressure, no damage to pipes (operates below mains pressure)
  • Minimal water usage – up to 95% less than flushing
  • Waste volumes are low, non-hazardous and often manageable on site
  • Quick deployment with low operational footprint and minimal highway disruption
  • Zero customer actions required & usually results in increased pressure and flow levels after cleaning
  • Compatible with all pipe materials and diameters (2mm – 1200mm) enabling benefits across the water industry and beyond
  • Applicable to multiple pipe types: drinking water, raw water, sewer pumping mains, chemical dosing lines, and other pressurised pipelines
  • Flexible window: can clean within a 3-hour interruption window or longer as required

This service-delivery model ensures all works are carried out by trained IES technicians only (no subcontractors) with strict adherence to client-approved RAMS, full operating procedures, and built-in system fail-safes. Safety is engineered into every stage of the process.

See the process in action here.

Simple to Deploy, Powerful in Impact

Unlike many alternative systems, Comprex® requires no complicated pre-conditions or extensive setup. It uses standard hydrant or valve access and can be completed within regular operational windows, often without customers even noticing.

Results from the Northumbrian UK pilot showed:

  • Rapid cleaning of 1–2km mains in a single day
  • Turbidity levels reduced to <2.5 NTU
  • Significant uplift in pressure and flow performance
  • Zero safety incidents
  • Positive feedback from network engineers and field teams

The system is controlled via digital interface, making calibration, monitoring, and reporting simple and transparent. Pressure levels are automatically kept within safe operating parameters to prevent risk to the asset or operators.

Comprex Case Study

Get in touch

To talk to our project management team call 0161 791 1496
or email info@iesutilities.co.uk

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