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For Landlords & Multisite Operators
Grease Trap Compliance, Made Simple for UK Kitchens
Understand your UK grease trap regulations, pass every inspection and prove due diligence — without the admin. Magneté keeps your grease management compliant, documented and audit-ready.
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⚠ The grease trap compliance risks UK operators face
75%
Sewer blockages
The Environment Agency estimates around 75% of sewer blockages are caused by fats, oils and grease — the exact waste a grease trap exists to capture.
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Legal duty to comply
The Water Industry Act 1991 makes it an offence to discharge FOG that blocks or damages public sewers. A poorly maintained grease trap puts that liability on you.
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Improvement notices
Fail an inspection and you can be served an improvement notice with a fixed timeframe to put things right — ignore it and fines or prosecution can follow.
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Reputational damage
Blocked drains, foul odours and public enforcement action erode customer trust, tenant relationships and asset value.
Grease trap regulations in the UK, explained
Grease trap compliance in the UK isn't optional. Several laws make commercial kitchens responsible for keeping fats, oils and grease out of the public sewer — and for proving it. Here's what applies to your business.
01
Mandatory grease management
Under the Water Industry Act 1991 (Section 111), it's an offence to discharge FOG that could block or damage a public sewer. Commercial kitchens are expected to fit and run an adequate grease trap or interceptor.
02
Ongoing maintenance & records
Fitting a trap isn't enough. Clean it before grease and solids reach around 25% of capacity (the “25% rule”) and keep dated maintenance records. Poor upkeep is treated as non-compliance.
03
Responsible waste disposal
The Environmental Protection Act 1990 requires FOG waste to be removed by licensed waste carriers, with paperwork retained as proof of proper disposal.
04
Inspections & enforcement
Water authorities and environmental health officers can inspect your system. Non-compliance can bring an improvement notice, and continued failure can lead to fines, prosecution or closure.
05
Everyday best practice
Train staff never to pour oils down the drain, fit sink strainers to catch food solids, and build grease trap checks into daily kitchen routines.
The 8-point grease trap inspection checklist
Run these eight checks regularly — in-house between visits and with a qualified engineer every one to three months — to keep your trap efficient and inspection-ready.
01
Check it's intact
Look for cracks, corrosion or visible damage that could cause leaks or foul odours.
02
Confirm it's watertight
Inspect seals, gaskets and joints for leaks that risk environmental contamination.
03
Check the positioning
Make sure the trap is connected to all relevant wastewater lines so FOG can't bypass it.
04
Ensure adequate clearance
Keep the trap accessible so cleaning and inspection are quick and thorough.
05
Check capacity & grease levels
Empty and clean before build-up passes the 25% rule; if it fills too fast, size up.
06
Inspect the flow-control valve
Check for blockages, wear or missing parts so wastewater flow stays properly regulated.
07
Verify the connections
No food waste disposal unit should ever be plumbed into the grease trap.
08
Confirm single-purpose use
The trap should handle kitchen grease only — never sanitary or non-kitchen drainage.
Expertise
We combine grease management, compliance insight and live data to help commercial kitchens reduce risk and improve performance.
Explore Case Studies
How It Works
From enquiry to compliant — in four steps
A simple, practical process to help you understand the risk, choose the right solution and improve compliance across your sites.
Learn More
Request a Quote - We'll respond within 1 business day with a transparent, fixed-fee quote for your sites.- Site Inspection - Our expert FOG inspector visits at a time convenient to you. The inspection typically takes 1–2 hours per site.
- Compliance Report - You receive a full written report within 24 hours — photographic evidence, compliance status, and a clear action plan.
- Ongoing Monitoring - For landlords and multisite operators, we set up a quarterly monitoring programme with digital tracking via the BigDipp app
Our Services
Everything you need to stay
on the right side of regulation
Magnete's FOGCheck service handles grease management compliance end to end — from initial site inspection through to ongoing quarterly monitoring programmes.
On-site FOG Inspection
Our certified inspectors visit your site and check flow rates, maintenance records, build-up levels, pipework condition, and grease trap sizing against BS EN 1825 and water authority standards.
Compliance Reporting
Receive a detailed written report within 1 business day. Includes a clear compliance evaluation, photographic evidence, and a prioritised action plan your tenants can act on immediately.
Landlord Quarterly Programme
Designed specifically for landlords with commercial tenants. Regular quarterly visits keep tenants accountable, protect your asset, and provide an audit trail you can present to water authorities.
Digital Maintanace Tracking
Access the BigDipp service app to track inspection history, maintenance records, and compliance status across all your sites from a single dashboard — essential for multisite portfolio management.
Tenant Training & Education
We don't just identify problems — we educate kitchen staff on best practices for FOG management so compliance is maintained between inspections, reducing the risk of repeat violations.
Proactive Compliance Support
Our team is available to advise on grease trap specifications for new fit-outs, lease clause guidance, and responding to water authority correspondence — keeping you protected at every stage.
From grease management and FOG compliance to live maintenance data and energy reduction — Magneté provides practical solutions for every stage of commercial kitchen performance.
SECtors
Built for landlords and
multisite operators
Helping landlords and multi-site operators reduce grease risk, improve compliance and gain clearer visibility across every site.
Commercial Landlords
- Landlords with food & beverage tenants in retail, leisure, or mixed-use developments
- Property managers responsible for shared drainage and sewer infrastructure
- Estate owners with pub, restaurant, or café tenancies
- Developers fitting out new commercial kitchen spaces
- Anyone who has received a water authority notification or enforcement notice
Multisite Operators
- Restaurant groups, pub chains, and QSR franchises with 2+ locations
- Contract caterers managing kitchens across multiple client sites
- Hotel and hospitality groups with on-site dining operations
- Healthcare or education facility managers with commercial catering
- Operations teams needing centralised compliance records across a portfolio
Commercial management
- Property managers responsible for food and beverage tenants
- Sites with shared drainage, grease risk or recurring blockage issues
- Managing agents needing clearer FOG compliance evidence
- Estates with restaurants, cafés, pubs or commercial kitchens
- Teams needing live maintenance data across multiple properties
Transparent Pricing
No hidden fees. Ever.
Two clear options — whether you need a one-off assessment or a fully managed ongoing programme.
See in action
01
Single Audit - from £495 per site
A comprehensive one-off FOG compliance assessment. Ideal for due diligence, lease renewals, or responding to a water authority inquiry.
02
Quarterly Programme - from £295 per site
Our managed quarterly programme, purpose-built for landlords and multisite operators. Keep tenants accountable and build a compliance audit trail
Blog
News & Insights
Fresh thinking and real-world advice to help you scale smarter, faster, and with more clarity
FAQ
Fast Answers for
Fast-Moving Teams
We’ve worked with dozens of fast-moving teams—so we know what comes up before your first call. Here’s what you should know.
Get to Know More
What kind of companies do you typically work with?
We typically work with commercial kitchens, restaurants, pubs, hotels, hospitals, landlords, facilities managers, kitchen contractors and multi-site foodservice operators who need support with grease management, FOG compliance, maintenance monitoring and energy reduction.
Can you support multiple sites?
Yes. We work with both single-site kitchens and multi-site operators, providing live data, reporting, maintenance visibility and practical support across estates so teams can spot issues early and manage compliance more consistently.
Do you offer one-off projects or ongoing advisory?
Both. We offer focused one off compliance, or ongoing multi visit compliance packages
How long does it take to get started?
We typically begin within 5–7 business days of your initial call, depending on scope and availability.
Is Magneté a good fit for single-site operators as well as larger estates?
Yes. Magneté works with both single-site commercial kitchens and multi-site operators, providing practical grease management, FOG compliance support, live data, maintenance visibility and energy insight that can scale with your business.
What kind of products and services does Magneté offer?
Big Dipper Grease Traps
Automated grease recovery units that capture and remove fats, oils and grease before they enter the drainage system. Big Dipper units use skimming technology, smart sensors and low-energy operation to support cleaner, more compliant commercial kitchens.
Spectank® Decarboniser
A specialist soak-cleaning system for commercial kitchens, designed to remove carbon, grease and burnt-on deposits from pans, trays, filters, burners and other kitchen equipment. Spectank helps reduce manual scrubbing, improve hygiene and extend the life of kitchen equipment.
FOG Compliance Platform and FOG Checks
A digital platform to help operators and facilities teams manage grease trap maintenance and compliance across single or multiple sites.
* Track daily maintenance
* Send alerts for missed actions
* Generate reports for FOG audits
* Provide multi-site visibility
* Support evidence-based compliance
Energy Management
Practical energy monitoring and reduction support for commercial kitchens, helping operators understand where energy is being used and where savings can be made.
Includes:
* Installation of power-monitoring devices such as Shelly Pro 3EM for main power supplies
* Equipment-level monitoring for high-use kitchen assets
* Software dashboards for comparing site performance
* Energy waste identification and reduction strategies
* Bespoke solar and battery solutions to optimise performance and reduce energy costs
Consulting & Strategy
Practical support to help commercial kitchens, landlords and multi-site operators improve compliance, reduce risk and lower operating costs.
Includes:
* Site audits and walk-throughs
* FOG compliance reviews
* Grease trap and drainage risk assessments
* Energy cost reduction opportunities
* Automation of equipment on/off times
* Improved grease trap maintenance and hygiene
* Ongoing monitoring and reporting for multi-site operators
Automated grease recovery units that capture and remove fats, oils and grease before they enter the drainage system. Big Dipper units use skimming technology, smart sensors and low-energy operation to support cleaner, more compliant commercial kitchens.
Spectank® Decarboniser
A specialist soak-cleaning system for commercial kitchens, designed to remove carbon, grease and burnt-on deposits from pans, trays, filters, burners and other kitchen equipment. Spectank helps reduce manual scrubbing, improve hygiene and extend the life of kitchen equipment.
FOG Compliance Platform and FOG Checks
A digital platform to help operators and facilities teams manage grease trap maintenance and compliance across single or multiple sites.
* Track daily maintenance
* Send alerts for missed actions
* Generate reports for FOG audits
* Provide multi-site visibility
* Support evidence-based compliance
Energy Management
Practical energy monitoring and reduction support for commercial kitchens, helping operators understand where energy is being used and where savings can be made.
Includes:
* Installation of power-monitoring devices such as Shelly Pro 3EM for main power supplies
* Equipment-level monitoring for high-use kitchen assets
* Software dashboards for comparing site performance
* Energy waste identification and reduction strategies
* Bespoke solar and battery solutions to optimise performance and reduce energy costs
Consulting & Strategy
Practical support to help commercial kitchens, landlords and multi-site operators improve compliance, reduce risk and lower operating costs.
Includes:
* Site audits and walk-throughs
* FOG compliance reviews
* Grease trap and drainage risk assessments
* Energy cost reduction opportunities
* Automation of equipment on/off times
* Improved grease trap maintenance and hygiene
* Ongoing monitoring and reporting for multi-site operators
Can you support multiple sites?
Yes. We work with both single-site kitchens and multi-site operators, providing live data, reporting, maintenance visibility and practical support across estates so teams can spot issues early and manage compliance more consistently.
What kind of companies do you typically work with?
We typically work with commercial kitchens, restaurants, pubs, hotels, hospitals, landlords, facilities managers, kitchen contractors and multi-site foodservice operators who need support with grease management, FOG compliance, maintenance monitoring and energy reduction.
Do you offer one-off projects or ongoing advisory?
Both. We offer focused one off compliance, or ongoing multi visit compliance packages
How long does it take to get started?
We typically begin within 5–7 business days of your initial call, depending on scope and availability.
Is Magneté a good fit for single-site operators as well as larger estates?
Yes. Magneté works with both single-site commercial kitchens and multi-site operators, providing practical grease management, FOG compliance support, live data, maintenance visibility and energy insight that can scale with your business.
What kind of products and services does Magneté offer?
Big Dipper Grease Traps
Automated grease recovery units that capture and remove fats, oils and grease before they enter the drainage system. Big Dipper units use skimming technology, smart sensors and low-energy operation to support cleaner, more compliant commercial kitchens.
Spectank® Decarboniser
A specialist soak-cleaning system for commercial kitchens, designed to remove carbon, grease and burnt-on deposits from pans, trays, filters, burners and other kitchen equipment. Spectank helps reduce manual scrubbing, improve hygiene and extend the life of kitchen equipment.
FOG Compliance Platform and FOG Checks
A digital platform to help operators and facilities teams manage grease trap maintenance and compliance across single or multiple sites.
* Track daily maintenance
* Send alerts for missed actions
* Generate reports for FOG audits
* Provide multi-site visibility
* Support evidence-based compliance
Energy Management
Practical energy monitoring and reduction support for commercial kitchens, helping operators understand where energy is being used and where savings can be made.
Includes:
* Installation of power-monitoring devices such as Shelly Pro 3EM for main power supplies
* Equipment-level monitoring for high-use kitchen assets
* Software dashboards for comparing site performance
* Energy waste identification and reduction strategies
* Bespoke solar and battery solutions to optimise performance and reduce energy costs
Consulting & Strategy
Practical support to help commercial kitchens, landlords and multi-site operators improve compliance, reduce risk and lower operating costs.
Includes:
* Site audits and walk-throughs
* FOG compliance reviews
* Grease trap and drainage risk assessments
* Energy cost reduction opportunities
* Automation of equipment on/off times
* Improved grease trap maintenance and hygiene
* Ongoing monitoring and reporting for multi-site operators
Automated grease recovery units that capture and remove fats, oils and grease before they enter the drainage system. Big Dipper units use skimming technology, smart sensors and low-energy operation to support cleaner, more compliant commercial kitchens.
Spectank® Decarboniser
A specialist soak-cleaning system for commercial kitchens, designed to remove carbon, grease and burnt-on deposits from pans, trays, filters, burners and other kitchen equipment. Spectank helps reduce manual scrubbing, improve hygiene and extend the life of kitchen equipment.
FOG Compliance Platform and FOG Checks
A digital platform to help operators and facilities teams manage grease trap maintenance and compliance across single or multiple sites.
* Track daily maintenance
* Send alerts for missed actions
* Generate reports for FOG audits
* Provide multi-site visibility
* Support evidence-based compliance
Energy Management
Practical energy monitoring and reduction support for commercial kitchens, helping operators understand where energy is being used and where savings can be made.
Includes:
* Installation of power-monitoring devices such as Shelly Pro 3EM for main power supplies
* Equipment-level monitoring for high-use kitchen assets
* Software dashboards for comparing site performance
* Energy waste identification and reduction strategies
* Bespoke solar and battery solutions to optimise performance and reduce energy costs
Consulting & Strategy
Practical support to help commercial kitchens, landlords and multi-site operators improve compliance, reduce risk and lower operating costs.
Includes:
* Site audits and walk-throughs
* FOG compliance reviews
* Grease trap and drainage risk assessments
* Energy cost reduction opportunities
* Automation of equipment on/off times
* Improved grease trap maintenance and hygiene
* Ongoing monitoring and reporting for multi-site operators
How long does it take to get started?
We typically begin within 5–7 business days of your initial call, depending on scope and availability.
What kind of companies do you typically work with?
We typically work with commercial kitchens, restaurants, pubs, hotels, hospitals, landlords, facilities managers, kitchen contractors and multi-site foodservice operators who need support with grease management, FOG compliance, maintenance monitoring and energy reduction.
Can you support multiple sites?
Yes. We work with both single-site kitchens and multi-site operators, providing live data, reporting, maintenance visibility and practical support across estates so teams can spot issues early and manage compliance more consistently.
Do you offer one-off projects or ongoing advisory?
Both. We offer focused one off compliance, or ongoing multi visit compliance packages
Is Magneté a good fit for single-site operators as well as larger estates?
Yes. Magneté works with both single-site commercial kitchens and multi-site operators, providing practical grease management, FOG compliance support, live data, maintenance visibility and energy insight that can scale with your business.
What kind of products and services does Magneté offer?
Big Dipper Grease Traps
Automated grease recovery units that capture and remove fats, oils and grease before they enter the drainage system. Big Dipper units use skimming technology, smart sensors and low-energy operation to support cleaner, more compliant commercial kitchens.
Spectank® Decarboniser
A specialist soak-cleaning system for commercial kitchens, designed to remove carbon, grease and burnt-on deposits from pans, trays, filters, burners and other kitchen equipment. Spectank helps reduce manual scrubbing, improve hygiene and extend the life of kitchen equipment.
FOG Compliance Platform and FOG Checks
A digital platform to help operators and facilities teams manage grease trap maintenance and compliance across single or multiple sites.
* Track daily maintenance
* Send alerts for missed actions
* Generate reports for FOG audits
* Provide multi-site visibility
* Support evidence-based compliance
Energy Management
Practical energy monitoring and reduction support for commercial kitchens, helping operators understand where energy is being used and where savings can be made.
Includes:
* Installation of power-monitoring devices such as Shelly Pro 3EM for main power supplies
* Equipment-level monitoring for high-use kitchen assets
* Software dashboards for comparing site performance
* Energy waste identification and reduction strategies
* Bespoke solar and battery solutions to optimise performance and reduce energy costs
Consulting & Strategy
Practical support to help commercial kitchens, landlords and multi-site operators improve compliance, reduce risk and lower operating costs.
Includes:
* Site audits and walk-throughs
* FOG compliance reviews
* Grease trap and drainage risk assessments
* Energy cost reduction opportunities
* Automation of equipment on/off times
* Improved grease trap maintenance and hygiene
* Ongoing monitoring and reporting for multi-site operators
Automated grease recovery units that capture and remove fats, oils and grease before they enter the drainage system. Big Dipper units use skimming technology, smart sensors and low-energy operation to support cleaner, more compliant commercial kitchens.
Spectank® Decarboniser
A specialist soak-cleaning system for commercial kitchens, designed to remove carbon, grease and burnt-on deposits from pans, trays, filters, burners and other kitchen equipment. Spectank helps reduce manual scrubbing, improve hygiene and extend the life of kitchen equipment.
FOG Compliance Platform and FOG Checks
A digital platform to help operators and facilities teams manage grease trap maintenance and compliance across single or multiple sites.
* Track daily maintenance
* Send alerts for missed actions
* Generate reports for FOG audits
* Provide multi-site visibility
* Support evidence-based compliance
Energy Management
Practical energy monitoring and reduction support for commercial kitchens, helping operators understand where energy is being used and where savings can be made.
Includes:
* Installation of power-monitoring devices such as Shelly Pro 3EM for main power supplies
* Equipment-level monitoring for high-use kitchen assets
* Software dashboards for comparing site performance
* Energy waste identification and reduction strategies
* Bespoke solar and battery solutions to optimise performance and reduce energy costs
Consulting & Strategy
Practical support to help commercial kitchens, landlords and multi-site operators improve compliance, reduce risk and lower operating costs.
Includes:
* Site audits and walk-throughs
* FOG compliance reviews
* Grease trap and drainage risk assessments
* Energy cost reduction opportunities
* Automation of equipment on/off times
* Improved grease trap maintenance and hygiene
* Ongoing monitoring and reporting for multi-site operators
Get Started
Ready to Improve Your FOG Compliance?
Book a free, no-obligation call to discuss your grease management responsibilities, site risks and compliance requirements.
