Updated July 2026
RoI & NI coverage
Seasonal Loading
PE-based sizing
Commercial Wastewater systems · Ireland & Northern Ireland
Campsite sewage system and wastewater treatment
Off-mains sewage systems for campsites, caravan parks, holiday parks and glamping sites. Sized around the full site load, seasonal use, discharge route and site conditions — not pitch numbers alone.
Campsites and caravan parks have a different wastewater pattern from houses, hotels or standard commercial premises. Demand can be low during quiet periods, rise sharply at weekends and bank holidays, and peak through the main holiday season.
Because of this, the correct campsite sewage system should be sized around the full site load, the seasonal use pattern, the discharge route and the site conditions — not pitch numbers alone. A system chosen on pitch count can be comfortably adequate in April and badly overloaded on the August bank holiday weekend.
For larger projects above 50 population equivalent (PE), Tricel Maxus is the main commercial wastewater treatment route. Smaller or mixed-use sites may need a separate technical review to confirm whether a domestic, light commercial or commercial treatment route applies. This page sets out how campsite wastewater differs, how a system is sized, which Tricel route suits which project, and what information helps us give you an accurate recommendation.
What is a campsite sewage system?
A campsite sewage system collects and treats wastewater from an off-mains camping, caravan or glamping site before the treated effluent is discharged through an approved route. The scale and complexity vary widely. At one end is a single toilet and shower block serving touring pitches; at the other is a holiday park operating year-round with fixed accommodation, kitchens, high visitor turnover and permanent staff. The system should be selected around the actual site profile rather than a generic assumption about “a campsite”.
Depending on the site, wastewater may come from:
- Toilet and shower blocks
- Static caravan connections
- Touring caravan pitches
- Glamping pods, cabins or lodges
- Staff facilities
- Reception or visitor facilities
- Cafés, small restaurants or food preparation areas
- Laundry areas
- Cleaning and maintenance facilities
- Seasonal or event-related visitor use
Each of these adds a different volume and a different wastewater strength. A shower block produces high-volume, relatively weak wastewater with short daily peaks; a kitchen or café produces lower volumes but higher organic load and fats, oils and grease; a laundry adds warm water and detergents. A system sized only on people-on-site can miss these differences, which is why the full facility mix matters as much as headcount.
Why campsite wastewater needs careful design
A campsite wastewater treatment system must deal with changing flow. A domestic system usually receives a fairly predictable daily load. A campsite may have little flow during part of the week and much higher flow during holiday periods, and the difference between the two can be large. Biological treatment relies on a living population of micro-organisms, and those organisms respond to how much load arrives and how steadily it arrives — not just to the annual average. This is the central reason campsite design needs care.
- Seasonal peaks during spring and summer
- Bank holiday and weekend loading
- Low or no flow during winter closure
- Short daily peaks from showers and toilets
- Wastewater from food service or laundry use
- Expansion from pitches into glamping pods or lodges
- Rural, coastal or sensitive locations
- High water table or restricted discharge options
- Limited installation space
- Pumping where gravity flow is not possible
If a system is undersized, poorly matched to the flow pattern, or not maintained, it can affect site operation, guest experience and environmental compliance. An overloaded system during peak season can lead to odour, poor effluent quality and, in sensitive receiving environments, a compliance problem at exactly the time the site is busiest and most visible. Getting the design right at the outset is considerably less costly than retrofitting capacity into an operating park mid-season.
Campsite, caravan park and glamping sites covered
This page applies to off-mains wastewater treatment for:
- Campsites
- Caravan parks
- Holiday parks
- Touring caravan sites
- Static caravan parks
- Glamping sites
- Pod and cabin developments
- Rural tourism sites
- Activity centres with overnight accommodation
- Mixed-use sites with camping, café and staff facilities
A very small glamping or rural tourism site may not need the same treatment route as a large caravan park. Final selection depends on the calculated PE, wastewater strength, discharge route, planning or consent conditions, and the site assessment. Two sites with the same number of pitches can land on different systems once their facilities, occupancy and receiving environment are taken into account.
How a campsite wastewater system is sized
Campsite wastewater should not be sized from pitch count alone. A proper review considers the full design load and how the site is used across the year. The aim is to establish a realistic peak load the system must handle, and a realistic low load it must tolerate without losing biological performance.
The key sizing information usually includes:
- Site location and jurisdiction (RoI or NI)
- Touring pitches, statics, pods, lodges or cabins
- Maximum overnight occupancy
- Staff numbers
- Toilet and shower block capacity
- Café, restaurant, bar or kitchen use
- Laundry use
- Seasonal opening periods
- Peak weekends and event periods
- Quiet periods or winter closure
- Existing treatment system, if any
- Proposed discharge route
- Ground conditions and percolation data
- Water table and flood-risk considerations
- Space for tanks, covers and servicing
- Future expansion plans
Where flows are likely to fluctuate, buffering and control become important. Buffering evens out incoming flow before biological treatment, so a sudden morning surge from a full shower block is metered into the process at a manageable rate rather than passing straight through. Control that adjusts to incoming load helps the system stay efficient across the full range between a quiet mid-week night and a full bank-holiday weekend.
Which Tricel system is suitable?
The route depends on the calculated PE, wastewater strength, discharge route and treatment requirement. Confirm the jurisdiction and PE before selecting a product.
Above 50 PE
Tricel Maxus — larger campsite and caravan park projects
For projects above 50 PE, Tricel Maxus is the relevant commercial range. Maxus uses Submerged Aerated Filter (SAF) technology and is designed for commercial and larger off-mains applications. It can be configured for seasonal and changing loads: the control panel can adjust to incoming load, and the system can enter power-saving mode during periods of no flow before restarting when flow returns.
Typical applications:
- Larger campsites and caravan parks
- Holiday parks
- Mixed camping and glamping sites
- Sites with toilet blocks, cabins and visitor facilities
- Seasonal or intermittent-use sites
Smaller / light commercial
Smaller or light commercial campsite projects
Not every campsite automatically needs a Maxus system. A smaller glamping site, small rural tourism site or mixed residential and commercial site should be reviewed against the calculated load, site use and local requirements.
Depending on the result, the project may involve:
- A wastewater treatment plant
- Additional secondary treatment
- Tertiary treatment or polishing
- A sand polishing filter
- A pumping station
- A commercial plant above 50 PE
The correct option should be confirmed after reviewing the PE, site conditions, discharge route and authority requirements. Where a site expects to grow — for example, converting touring pitches to glamping pods over a few seasons — it is usually more economical to plan for that capacity at design stage than to upgrade later.
Ireland and Northern Ireland: confirm the location first
Wastewater requirements differ between the Republic of Ireland and Northern Ireland, so the site location should be confirmed before a campsite sewage system is selected.
In the Republic of Ireland, the EPA’s 2021 Code of Practice for Domestic Waste Water Treatment Systems applies to domestic wastewater treatment systems with a population equivalent of 10 or fewer. The EPA states that the Code provides guidance on site characterisation, design, operation and maintenance of domestic wastewater treatment systems. A campsite, caravan park or glamping business should not automatically be treated as a domestic project, especially where the calculated PE, commercial use or discharge route moves it outside a domestic route.
In Northern Ireland, DAERA’s guidance on regulating water discharges explains that domestic consents are for discharges from a single dwelling only and that sites of two or more dwellings should first seek advice from NI Water regarding connection to the public sewer network. DAERA also provides guidance on private sewage treatment systems, including septic tanks and package treatment plants, which are commonly used where a site is not connected to the public sewer.
Before choosing a system, confirm the site jurisdiction, whether the project is domestic, light commercial or commercial, the calculated PE, whether a public foul sewer connection is possible, the discharge route, any planning, licence or consent requirements, and whether additional polishing or tertiary treatment is needed.
Treatment stages in a commercial campsite system
A commercial campsite wastewater treatment system usually includes staged treatment. In a Maxus-type commercial arrangement, the process runs in four stages.
Primary settlement
Wastewater enters a settlement tank. Heavier solids settle to the base, while fats, oils and grease rise to the surface and are retained.
Buffering
The buffer stage manages changing incoming flows — useful for campsites, where demand varies sharply between quiet and peak periods.
Biological treatment
Wastewater passes through the biological zone. In the Maxus range, SAF technology provides a large surface area for microbial treatment.
Final clarification
Remaining solids settle out before treated effluent leaves through the approved discharge route.
Additional polishing, pumping or tertiary treatment may be required depending on the site and the receiving environment. A coastal or amenity-water location, for example, may carry tighter discharge standards than an inland site with a straightforward percolation route, and the treatment train should be built around that requirement rather than around a standard package alone.
Common campsite wastewater challenges
Seasonal opening
Many sites open for part of the year only. The system must perform during peak season while also tolerating quieter periods and winter closure without losing its biological population.
Peak shower and toilet demand
Morning and evening use creates short, heavy loading periods. Toilet and shower block design should be considered during sizing, not treated as an afterthought.
Sensitive locations
Campsites are often in scenic, rural or coastal areas where discharge standards can be more demanding. The receiving environment should be considered early.
Expansion into glamping
Adding pods, cabins, lodges or statics changes the PE and wastewater profile. Where possible, include planned expansion at design stage.
Existing septic tank replacement
Older septic tank arrangements may not suit a larger, busier or higher-standard site. Replacement or upgrade may be needed where the system is overloaded, non-compliant or unsuitable for the discharge route.
Ground and water conditions
High water table, flood risk and limited installation space all affect what can be installed and whether pumping is required. These should be checked in the site assessment.
Case studies relevant to campsite and seasonal wastewater
Meadowfield Caravan Park, Co. Wicklow
A caravan park project requiring a system that could handle changing flows between peak and quiet periods, fit within a small site footprint and be installed during the closed season.
View case studyCamping Moenbroen, Denmark
A campsite project using a 50 PE Tricel Maxus plant. Seasonal demand meant high summer loading and much lower winter flow — a clear illustration of why campsite systems must account for both full-capacity and off-season use.
View case studySeasonal commercial site, Carna
A seasonal commercial site with high water table conditions, pumping requirements and telemetry needs — an example of design driven by ground conditions as much as by load.
View case studyWhat Tricel needs before recommending a system
- Site name and location
- Republic of Ireland or Northern Ireland
- New build, upgrade or replacement
- Number of pitches, pods, caravans, cabins or lodges
- Maximum occupancy
- Staff numbers
- Toilet and shower facilities
- Café, kitchen, laundry or food service details
- Seasonal opening pattern
- Peak periods
- Existing wastewater system details, if any
- Discharge route
- Percolation or site assessment information
- Planning, licence or consent details
- Site layout drawings, where available
- Future expansion plans
Request campsite wastewater advice
A campsite sewage system should be selected around the site’s actual load, seasonal pattern and discharge requirements. Send Tricel your site details and our team can review the project route, PE, system type and next steps.
Table of Contents
Not sure which system is right for your site?
A site assessment, rather than product preference, determines whether a septic tank or wastewater treatment plant is the correct route for your project.
Frequently asked questions for campsite wastewater treatment
What is a campsite sewage system?
A campsite sewage system treats wastewater from an off-mains campsite, caravan park or glamping site. It may collect flow from toilets, showers, caravan pitches, pods, cabins, staff facilities, laundry areas and visitor facilities before discharging treated effluent through an approved route.
What is the difference between campsite and domestic wastewater treatment?
Domestic treatment is usually based on household occupancy and a more consistent daily pattern. Campsites and caravan parks often have seasonal peaks, quiet periods, weekend demand and changing visitor numbers, so the system must be sized around the full site load and usage pattern.
Can a campsite use a septic tank?
Some small or specific sites may include primary treatment as part of the design, but a septic tank alone may not provide the treatment level required for a campsite, caravan park or glamping business. Final selection depends on the site assessment, PE, discharge route and local authority or consent requirements.
What Tricel product is suitable for campsite wastewater treatment?
For campsite, caravan park or holiday park projects above 50 PE, Tricel Maxus is the relevant commercial range. Smaller sites may require assessment to confirm whether another treatment route is suitable.
Can Tricel Maxus handle seasonal campsite loads?
Yes. Tricel Maxus is suitable for seasonal or constant loads. The control panel can adjust to incoming flow, and the system can enter power-saving mode during periods of no flow before restarting once flow is detected.
How is a campsite wastewater treatment plant sized?
It is sized using the calculated PE, maximum occupancy, pitch or unit numbers, toilet and shower use, staff numbers, catering or laundry use, peak periods, seasonal opening pattern, discharge route and site conditions.
Is a glamping site treated the same as a campsite?
Not always. A small glamping site may have a different load from a large campsite or caravan park. The number of pods or cabins, guest occupancy, ensuite facilities, staff use and food service all affect the system route.
Do campsite wastewater systems need consent in Northern Ireland?
In Northern Ireland, private sewage treatment systems, including septic tanks and package treatment plants, require consent from the Northern Ireland Environment Agency. The correct application route should be confirmed before selecting a system.
Does a campsite in Ireland fall under the EPA domestic Code of Practice?
The EPA Code of Practice applies to domestic wastewater treatment systems with a PE of 10 or fewer. Campsites, caravan parks and glamping businesses should be assessed on their actual PE, commercial use and discharge route rather than treated automatically as domestic projects.
What information should I send Tricel for a campsite quote?
Send the site location, number of pitches or accommodation units, maximum occupancy, staff numbers, toilet and shower details, seasonal opening pattern, café or laundry use, existing system details, discharge route and any planning or consent information already available.
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