Sandcel is an advanced sand polishing filter system designed to meet the EPA Wastewater Treatment and Disposal Standards for Single Houses (p.e.), 2021. It performs a dual function—enhancing the quality of effluent from a wastewater treatment system and safely discharging the treated liquid into the groundwater.
The system features a fully enclosed sand filter, which can be installed above or below ground and adjusted in height to accommodate a wide range of site conditions. For larger-scale requirements, custom Sandcel solutions can be designed by our in-house engineering team.
Tricel Sandcel filters are designed as tertiary treatment systems, providing an additional layer of purification after the secondary treatment stage in a wastewater system.
Each Sandcel unit is constructed with certified drainage sands layered within GRP (Glass Reinforced Plastic) impermeable panels, which are highly durable and resistant to decay or damage underground. These filters polish the effluent to an even higher standard before it is safely discharged into the environment.
Sandcel filters are versatile and can be installed either above or below ground, with all critical pipework easily accessible via a service pod for hassle-free annual maintenance.
Depawater's engineers are accredited by British Water, all our products are CE certified
We deliver on reliability and efficiency in both service and products
Over fifteen years of experience providing an industry-leading professional service
Offering you the best value for money wastewater treatment systems in Northern Ireland








Tricel’s Sandcel Sand Filters offer a high-performance, low-maintenance solution for polishing and safely dispersing treated effluent. Here’s why they stand out:
Solid, Long-Lasting Construction:
The GRP-enclosed structure is rot- and decay-resistant—unlike traditional timber surrounds.
Compact Footprint:
Requires just 16m² for a 6-person household, making it ideal for restricted or small sites.
Discreet Appearance:
Can be covered with topsoil and lawn, blending seamlessly into garden or landscape settings.
Durable Filter Media:
Built with certified sands and gravel that won’t degrade over time, ensuring long-term performance.
Flexible Installation:
Suitable for above or below ground installation depending on your site’s needs.
Service-Ready Design:
A dedicated service pod provides easy access to pipework for future maintenance or upgrades.
Engineered Efficiency:
Precision-designed pipework ensures even effluent distribution across the filter bed.
Exceptional Performance:
Delivers consistently high levels of effluent treatment and environmental protection.
Whether your building a new home or have a commercial project or are upgrading an old system, Depawater is here to help. With over 25+ years of experience, trusted Tricel products, and a personal, professional approach – we’re the team you can rely on to get the job done right. We manage insurance claims, making the process as smooth and stress-free as possible.