Updated June 2026
Northern Ireland
Distributor network
Site assessment
National distributor network
Jurisdiction: Northern Ireland
Find a Tricel wastewater distributor in Northern Ireland
Private sewage treatment in Northern Ireland — septic tanks, packaged treatment plants and their replacement or upgrade — sits under NIEA Consent to Discharge and district council Building Control, a different regulatory route from the Republic of Ireland. A local Tricel distributor can help you work out which product fits your site once that route is understood.
Select your county below to reach the distributor covering Antrim, Armagh, Down, Fermanagh, Derry ~ Londonderry or Tyrone, or use the locator if you’re unsure which one applies to your postcode.
Local support for your Northern Ireland wastewater project
Choosing a replacement or new wastewater system in Northern Ireland starts with the regulatory position, not the product catalogue: whether a Consent to Discharge already exists for the site, whether it needs to be amended for a new system, and what the district council’s Building Control department requires for the installation itself.
A local Tricel distributor can help match a product to the route your site assessor or NIEA consent has established, and can advise on supply, delivery, installation, commissioning, servicing and desludging once that route is confirmed. A distributor cannot apply for consent, planning permission or Building Control approval on your behalf.
Please note
A distributor’s advice does not replace NIEA Consent to Discharge, district council Building Control approval, planning permission, or a formal site assessment.
DAERA’s statutory determination period for a Consent to Discharge application can run up to four months, so this is usually the first thing to address rather than the last — well before a system is ordered or an installation date is set.
Wastewater distributor coverage in Northern Ireland
Find your local Tricel wastewater distributor
Select your country and county, add your Eircode or postcode, and tell us the population equivalent or number of bedrooms. Tricel will route your enquiry to the appropriate distributor or wastewater partner.
Find the distributor serving my site
Fields marked with an asterisk help us route your enquiry more accurately.
Scope of support
What can a local Tricel distributor help with?
The exact scope varies by partner and project, but the distributor network may assist with the following.
Product and project enquiries
Discuss the property type, expected loading, available site documentation, proposed system, installation location and project programme.
Product quotations
Request a supply-only or broader project quotation, stating clearly whether delivery, excavation, installation, electrical work, pumping, commissioning, landscaping, servicing and VAT are included.
Site visits
A site visit may be arranged where further information is required. This is not a replacement for the formal site-characterisation process required for a planning application.
Delivery and installation
Confirm product availability, delivery access, lifting requirements, installation scope, groundworks responsibilities and who will complete the installation.
Commissioning
Where applicable, confirm who will commission the treatment plant, test the alarm and mechanical components, and provide the commissioning and handover records.
Maintenance and repairs
Ask about scheduled servicing, alarms, replacement components, system checks, repairs, upgrades and desludging arrangements.
Product range
Tricel wastewater products available through the distributor network
Septic tanks, domestic treatment plants, commercial systems, secondary and tertiary treatment products, sand polishing filters, pumping stations and related components.
Septic tanks
Primary treatment where a septic-tank route and suitable downstream treatment have been confirmed.
Domestic treatment plants
Packaged wastewater treatment plants available in domestic and larger population-equivalent sizes.
Commercial treatment
Intended for commercial and larger wastewater loads above the domestic treatment range.
Sand polishing filters
Polishing and infiltration functions as part of an approved wastewater treatment arrangement.
Secondary treatment
Passive or packaged secondary treatment after a septic tank or as part of an approved replacement route.
Tertiary treatment
Additional treatment where the site assessment, planning conditions or required effluent standard demands it.
Pumping stations
Required where the complete wastewater system cannot operate by gravity alone.
Planning applications
Guidance for starting a new-build project from the completed site assessment and planning requirements.
Process
How the distributor enquiry process works
Septic tanks, domestic treatment plants, commercial systems, secondary and tertiary treatment products, sand polishing filters, pumping stations and related components.
Select your county
Use the county links or national locator to identify where the project is located.
Describe the property and project
State whether the enquiry concerns a house, extension, replacement system, commercial premises, housing development, school, hospitality property, rural business or another use.
Provide available site information
Attach the site-assessment report, planning drawings, wastewater design, existing consent or registration details, installation photographs, inspection findings or servicing records where relevant.
Confirm the required assistance
Explain whether you require product supply, an installation quotation, a replacement assessment, commissioning, servicing, spare parts or troubleshooting.
The enquiry is routed locally
Tricel will direct the enquiry to the distributor, installer, service provider or internal technical contact appropriate to the county and project type.
Confirm the quotation scope
Before accepting a quotation, confirm what is included, what is excluded, who is responsible for regulatory and planning compliance, and which records will be supplied at completion.
Before you enquire
Information to include when requesting a quotation
Providing accurate information at the beginning can reduce delays and avoid quotations based on incorrect assumptions.
Property and site information
- Project address and Eircode
- County and nearest town
- New build, replacement, upgrade or repair
- Domestic, shared, commercial or mixed use
- Number of bedrooms or expected population equivalent
- Planning status
- Site-assessment or wastewater report
- Proposed tank or treatment-plant position
Installation and service requirements
- Proposed discharge or infiltration arrangement
- Gravity or pumped discharge
- Access limitations
- Expected delivery date
- Whether excavation and installation are required
- Whether electrical work is required
- Whether commissioning is required
- Whether ongoing servicing is required
By project type
Find support for your type of project
New-build wastewater systems
Start with the completed site assessment and approved planning documents. The distributor can then quote for a product corresponding with the approved design.
Replacement septic tank or treatment plant
Provide information about the existing system, its location, condition, loading, discharge route, planning history and the reason for replacement.
Commercial and shared systems
Provide the full wastewater profile rather than relying only on staff or visitor numbers, including peak loading, wastewater strength, seasonal use, kitchens, laundry, showers, washdown or trade wastewater.
Servicing and maintenance
State the product model, approximate installation date, current symptoms, alarm condition, previous service history and whether there is active leakage, ponding or pollution.
Commissioning
Confirm whether commissioning is included in the installation quotation and which operating, testing and handover records will be issued.
Due diligence
Questions to ask before appointing a distributor or installer
Quotation and installation scope
- Is the quotation supply-only or fully installed?
- Is site delivery included?
- Who is responsible for excavation and backfilling?
- Is concrete or another specialist backfill required?
- Are pipework and inspection chambers included?
- Are pumps, alarms, controls and electrical connections included?
- Is the final polishing or infiltration area included?
- Is commissioning included?
Completion, servicing and exclusions
- Which installation records will be supplied?
- Who will check the work against the approved design?
- What servicing is required?
- Which warranties apply?
- Who will provide repairs and replacement components?
- What access must remain available after installation?
- Which items are excluded from the stated price?
Find the wastewater distributor serving your site
Tell us where your Northern Ireland project is located and what assistance you require. Include any available Consent to Discharge, planning documents, system details, photographs or maintenance records. Your enquiry will be directed to the wastewater contact serving your location.
Or call the Northern Ireland team on +44 (0)28 3750 7023
Frequently asked questions
Guidance on local wastewater contacts, NIEA Consent to Discharge, Building Control, quotations, installation and servicing in Northern Ireland.
Does Tricel have wastewater distributors throughout Northern Ireland?
Tricel’s official Northern Ireland agent, Depawater, supplies, installs, commissions and services Tricel septic tanks and wastewater treatment systems across Northern Ireland. Use the county contacts above for Antrim, Armagh, Down, Fermanagh, Derry/Londonderry and Tyrone, or contact Depawater directly .
Do I need Consent to Discharge before replacing or installing a system?
Consent is required where sewage effluent is discharged to a waterway or underground strata. The requirement applies to proposed and pre-existing discharges. Before ordering a system, confirm whether a consent already exists, whether it covers the proposed work and whether it must be amended or replaced. Read our Consent to Discharge guide or search the official DAERA register .
How long does a Consent to Discharge application take?
DAERA states that the statutory determination period can be up to four months. Further information requests can affect the overall programme. Address the consent route before agreeing an installation date with a distributor. See the official DAERA application guidance .
Is the domestic consent route suitable for more than one dwelling?
The single-dwelling domestic application route is not the correct route for a residential development of two or more dwellings. DAERA requires evidence of a valid NI Water Pre-Development Enquiry, and a Wastewater Impact Assessment may also be required. Commercial premises use the relevant non-domestic application route. Review the DAERA requirements for larger developments .
Does Building Control need to be involved?
Northern Ireland Building Regulations treat the installation of a septic tank, cesspool or similar structure as the provision of a service. The drainage requirements may apply to new work, alterations and replacements. Contact the relevant district council’s Building Control department before work begins. You can also review Technical Booklet N: Drainage .
Can a distributor tell me which wastewater system to install?
A distributor can explain the Tricel products available for the discharge route confirmed by the site information and NIEA consent. The final system must match the consent conditions, required capacity, discharge arrangement and Building Control requirements. Start with our Northern Ireland wastewater guide .
Can I request a supply-only quotation?
Yes. State clearly that the enquiry is for product supply only. Confirm whether delivery, accessories, risers, alarms, pumps, controls and commissioning are included. Submit the project information through the Northern Ireland enquiry form .
Does NI Water offer support with desludging?
NI Water provides eligible domestic customers with one free desludge within a twelve-month period, subject to its access, capacity and safety conditions. This is an emptying service; it is not approval or funding for a replacement system and is separate from distributor servicing. See NI Water’s septic-tank emptying service .
Is there a grant for septic tank replacement in Northern Ireland?
The Republic of Ireland’s domestic wastewater grant schemes do not apply in Northern Ireland. Current official Northern Ireland guidance does not identify an equivalent dedicated septic-tank replacement grant. Housing Executive renovation, replacement and repair grants are available only in exceptional circumstances. Check current NI Direct home-improvement funding guidance and contact the Housing Executive or local council before relying on financial assistance.
What happens if I am not sure which county applies to my site?
Use the Northern Ireland county locator . Provide the site address, postcode and nearest town. The enquiry can then be directed to the wastewater contact covering the project location.
Can I contact Tricel’s Northern Ireland distributor directly?
Yes. Call +44 (0)28 3750 7023 or use the Depawater contact form for product, consent, installation, commissioning, servicing and maintenance enquiries.
Get in touch