Construction Site Water Management
Silt Capture Channel
Silt Capture Channels are used to slow the flow of dirty water, to filter and trap silt and fine sediment and polish the water as it passes through the treatment channel.

Formed on an impermeable membrane and made up of a combination of Floc Mat®, Silt Mats™ and Silt Wattles, this natural water treatment system helps clean the water and prevents the risk of polluting nearby watercourses and causing harm to aquatic life.
Depending on the available space, topography and pumping rate, the Silt Capture Channel can be formed in different configurations to suit the constraints of the construction site. Configurable for above-ground installation on an impermeable liner, or dug in where site constraints favour a shallow, lined channel, they are simple to install, easy to monitor, and deliver highly effective, low-cost treatment of clays and fines for construction sites. Our technical team can help advise you on the best set up for your site.
A Silt Capture Channel can be used passively as a standalone treatment option to treat water or in combination with our Pipe Reactor pumped system.
Compared with tank-based or hard-barrier systems, Silt Capture Channels offer lower whole-life cost and carbon, including gravity-fed, zero-carbon operation where site gradients allow.
It is commonly used for:
- Drainage from construction sites
- Polishing water
- Artificial dispersion fields
- Quarrying operations
Key Benefits
Silt Capture Channels form part of our Rain Ready®, low carbon, high performance approach to silt control on construction sites
Reliable & affordable pollution prevention
Captures and binds silt, cleaning muddy construction site water. Gravity-fed options provide zero-carbon operation.
Scalable design
The channel can be made in any shape and size to suit your site, and a second channel can be built to handle higher volumes of silty water.
Simple to install and reconfigure
Above-ground or dug-in layouts available to suit space, gradient and access.
Easy to monitor and maintain
Consumables are quick to replace; channels can be isolated for refurbishment without stopping treatment.
Scalable flow management
One standard channel handles up to 900 L/min; two in tandem treat up to 1,800 L/min.
Rapid response & delivery
We provide rapid response times and zero carbon deliveries.
Technical specification of our Silt Capture Channel:
Configuration | Formed on an impermeable liner using a combination of Floc Mat®, Silt Mats™ and Silt Wattles to slow flow, filter and trap silt/fines. Channels can be above-ground or set into shallow, lined formations where suitable. |
Treatment rate | Standard Silt Capture Channels treat up to 900 l/min; two in tandem treat up to 1,800 l/min. Operate both for peak flows or take one offline to refurbish while maintaining treatment. |
Application | Standalone polishing of site water, or use downstream of the Pipe Reactor for enhanced removal of fine clay-associated particles. |
Materials & capacity | Made up of natural-fibre, biodegradable media; each mat typically holds 40–50 kg of captured sediment. |
Carbon & energy | Can be gravity-fed for zero-carbon operation; also compatible with pumped systems when used with a Pipe Reactor. |
Maintenance | Typical channel refurbishment is around three to four times per year (site-dependent). Size and location can be adjusted as works evolve. |
End-of-use | Used mats can be reused onsite to stabilise bare ground and to support newly planted trees and hedgerows (subject to waste-regulatory controls). |
Further training & links
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