DIY Bucket Toilet for Campervans: Complete Guide to Building an Emergency Van Toilet
The bucket toilet is the cheapest, simplest, and most reliable toilet option for van life. It is also the most controversial — some people find it gross, others swear by it.
I used a bucket toilet for six months while building my first van's proper toilet setup. It was not luxurious, but it worked every time, never broke, and cost £12. When I finally installed the Thetford cassette, I honestly missed the simplicity of the bucket.
This guide covers how to build a bucket toilet, what works for odour control, legal disposal, and why a bucket is sometimes the best choice.
Why Use a Bucket Toilet?
| Pros | Cons |
|---|---|
| Costs £10–30 total | Requires carrying and emptying |
| No installation | Less comfortable than a proper toilet |
| No chemicals needed | Can smell if not managed properly |
| No plumbing, drilling, or wiring | Not accepted at campsite disposal points |
| Lightweight and portable | Feels primitive to some users |
| Works in any van, any season | |
| Can be stowed away when not needed |
Best for:
- Emergency backup (kept under the bed for when you cannot get to a toilet)
- Budget builds where every pound counts
- Short trips where a full toilet is overkill
- Wild camping away from campsite facilities
Not ideal for:
- Full-time van life (the emptying gets old)
- Couples (two people fill a bucket fast)
- Anyone with a compromised sense of smell
What You Need
| Item | Cost | Notes |
|---|---|---|
| 10–15L bucket with lid | £5–10 | Standard builders' bucket from Wickes, B&Q, or Screwfix |
| Snap-on toilet seat | £8–15 | Designed for buckets, fits standard 30cm bucket opening |
| Biodegradable bags | £5–10/100 | 30L+ garden waste bags or compostable bin liners |
| Absorbent material | £1–5 | Wood pellets, sawdust, cat litter, or peat moss |
| Privacy tent (optional) | £20–40 | Pop-up changing tent for outdoor use |
Total: £20–40 for a complete setup.
How It Works
Standard Method (Wet)
- Line the bucket with a biodegradable bag
- Do your business
- Cover with a thin layer of absorbent material (sawdust, cat litter)
- When the bag is full, tie it off and dispose responsibly
Separation Method (Better)
- Line the bucket with a bag
- Place a urine separator (funnel + hose to a separate container)
- Urine goes into the separate container (easier to dispose of)
- Solids + absorbent material in the bucket
- Empty the urine container daily, the solids every 2–4 days
The separation method dramatically reduces odour and makes disposal easier. A urine separator funnel costs £5–10 on Amazon. A 5L jerry can for urine costs £5.
Odour Control
The secret to a non-smelly bucket toilet: dry separation.
| Absorbent Material | Odour Control | Cost | Notes |
|---|---|---|---|
| Wood pellets (horse bedding) | Excellent | £6/15kg bag | Best option. Soak up liquid, neutralise smell. |
| Pine sawdust | Good | Free (if you have it) | Dries waste quickly. Pleasant pine smell. |
| Cat litter (clumping) | Good | £3–5/10L | Absorbs liquid well but is heavier. |
| Peat moss | Good | £5–10/bag | Natural, absorbs well but not eco-friendly to harvest. |
| Coffee grounds | Moderate | Free | Absorbs odour but can attract flies. |
Application: Add a 1cm layer of absorbent after every use. The goal is to keep the waste dry — dry waste does not smell.
Using the Bucket Toilet in Practice
Step-by-Step
- Before use: Place a bag in the bucket, add a 2cm base layer of wood pellets
- Use: Do your business
- After use: Sprinkle a generous layer of wood pellets over the waste
- Cover: Snap the lid on (the toilet seat has a lid)
- Emptying: Every 2–4 days (for one person), tie the bag, remove it, and dispose
Emptying
The most important part. Done correctly, emptying a bucket toilet is not unpleasant.
- Wearing gloves, carefully tie the top of the biodegradable bag
- Lift the bag out of the bucket
- Place in a second heavy-duty bag for disposal
- Wipe the inside of the bucket with a dilute bleach solution
- Insert a fresh bag, add a base layer of pellets
Disposal
Legal disposal options:
- Elsan point: Most campsite chemical disposal points accept bagged waste from bucket toilets. Check with the campsite first.
- General waste: Bagged solid waste (with absorbent material) can be disposed of in general waste bins. Double-bag to be safe.
- Compost bin: If you use biodegradable bags and only natural absorbents (wood pellets, sawdust), the waste can be composted. This takes 6–12 months to break down fully.
Illegal:
- Dumping bagged waste in public bins (it is fly-tipping)
- Burying waste on public land
- Putting waste in recycling bins
When to Upgrade
A bucket toilet works, but you will know when it is time to upgrade when:
- You dread emptying it
- The smell lingers despite your best efforts
- You are refilling absorbent material every 3 days
- You want guests to feel comfortable using your van toilet
At this point, spend £80–150 on a Thetford Porta Potti or £400 on a composting toilet. The bucket served its purpose.
Build Instructions
Option 1: Basic Bucket
- Buy a 12L bucket with a lid (B&Q, £6)
- Buy a snap-on toilet seat for buckets (Amazon, £10)
- Attach the seat to the bucket rim (it just snaps on)
- Done
Option 2: Separation Bucket
- Follow the basic bucket instructions above
- Buy a urine separator funnel (£8)
- Drill a 20mm hole in the bucket lid
- Feed the separator hose through the hole
- Attach the other end of the hose to a 5L jerry can
- Secure the separator to the bucket rim with clips or tape
Option 3: Van-Integrated Bucket
- Build a wooden box in your van that holds the bucket
- The box has a lid that doubles as a seat
- Cut a hole in the box lid for the bucket opening
- The bucket slides in from the front (accessible without moving gear)
- This is basically a home-built composting toilet without the mixing mechanism
Summary
| Feature | Bucket Toilet | Thetford Porta Potti | Composting Toilet |
|---|---|---|---|
| Cost | £20–40 | £80–200 | £400–1,000 |
| Installation | None | None | Drilling for urine drain |
| Chemicals | None | Required (£3–5/month) | None |
| Odour (good management) | Low | Low | Very low |
| Emptying frequency | 2–4 days | 3–5 days | 2–4 weeks (solids) |
| Comfort | Medium | High | High |
| Space needed | 30cm diameter | 30cm × 35cm | 40cm × 40cm |
The bucket toilet is not a long-term solution for full-time van life, but it is the best emergency backup and the cheapest way to get started. If you are on a tight budget or building your van gradually, start with a bucket and upgrade when you can.
FAQ
Q: Is a bucket toilet gross? A: Not if you manage it properly. The key is dry separation — add wood pellets after every use, keep the waste dry, and empty regularly. A poorly managed bucket toilet is gross. A well-managed one is no more unpleasant than a cassette toilet.
Q: Can I use a bucket toilet in cold weather? A: Yes. Unlike cassette toilets (chemicals freeze at −5°C) and composting toilets (biological process slows), a bucket toilet works in any temperature. Keep the absorbent material dry and it will not freeze solid.
Q: What size bucket should I use? A: 10–15L is ideal. A 10L bucket lasts one person 2–3 days before emptying. Anything larger is heavy when full. Anything smaller needs emptying too often.
Q: How do I stop the bucket toilet smelling in a small van? A: Three things: (1) wood pellets (not cat litter — it cannot handle the volume), (2) a tight-sealing lid, (3) empty every 2–3 days without fail. If it is stored under the bed, the bed base acts as a natural odour barrier.
Q: Is a bucket toilet legal in a campervan? A: Yes. There is no law against having a bucket toilet in a vehicle. The legal requirement is about disposal — you must dispose of waste responsibly at designated points.
Q: Can I take a bucket toilet on a campsite? A: Most campsites expect you to use their toilet facilities or have a certified chemical toilet. A bucket toilet may not be accepted. If you are discreet and responsible about disposal, most sites do not mind.
