Blue Diamond Portable Toilet Range — Budget Options Reviewed

Blue Diamond has carved out a solid niche in the UK camping market by offering portable toilets at prices significantly below the premium brands. For campers who need a functional, reliable toilet without the outlay required for a Thetford or Dometic, Blue Diamond delivers. Here is a closer look at their range and where each model fits as we approach summer 2026.

Who Is Blue Diamond For?

Blue Diamond targets three main audiences:

• First-time portable toilet buyers who are not sure whether they will use it enough to justify a premium model.
• Festival campers who need a basic, functional toilet for a few weekends a year.
• Budget-conscious families who want to add a portable toilet to their kit without a large expense.

If any of those descriptions fit you, Blue Diamond is worth serious consideration.

Blue Diamond Standard Portable Toilet

The entry-level model features a 10-litre waste tank and a 10-litre flush-water tank. The bellows flush pumps water from the top tank into the bowl, and a blade valve seals the waste tank between uses. Construction is functional — lighter-weight plastic than premium brands, but adequate for the price.

Strengths

• Extremely affordable — typically under 40 pounds
• Lightweight and compact — easy to transport to festivals or store in a small tent
• Compatible with all standard toilet chemicals (Thetford Aqua Kem, Elsan, etc.)

Limitations

• 10-litre waste tank fills quickly with two or more users
• No tank-level indicator — you judge by weight and usage
• Bellows flush is less powerful than a piston flush
• Plastic feels thinner than Thetford or Dometic equivalents

Blue Diamond Deluxe Portable Toilet

The Deluxe model steps up significantly with a 20-litre waste tank and a more robust build. The flush mechanism is still bellows-operated, but the larger tank capacity doubles or triples the time between empties compared to the Standard model. A tank-level indicator is included, which is a welcome practical addition.

Strengths

• 20-litre waste tank — comparable to the Thetford Porta Potti 365
• Tank-level indicator removes guesswork
• More comfortable seat with better weight distribution
• Still priced well below Thetford and Dometic equivalents

Limitations

• Bellows flush — no piston option in the Blue Diamond range
• Seal quality is adequate but may need earlier replacement than premium brands
• Heavier than the Standard model when full (20+ kg)

How Blue Diamond Compares to Premium Brands

In terms of raw functionality — flushing, waste containment, chemical compatibility — Blue Diamond toilets do the same job. The differences are in refinement:

1. Flush quality: Thetford's piston flush (Porta Potti 345+) delivers notably better bowl coverage than any bellows flush.
2. Build quality: Thetford and Dometic use thicker, more UV-resistant plastics. Blue Diamond models may show wear sooner with heavy use.
3. Seal longevity: premium seals tend to last longer before requiring lubrication or replacement.
4. Design details: carry handles, spout design and latching mechanisms are more refined on premium models.

For occasional use — ten to twenty nights per year — these differences are minor. For daily use on a long motorhome tour, the premium brands justify their price.

Making the Most of a Blue Diamond Toilet

• Use quality chemicals regardless of the toilet brand — Thetford Aqua Kem or Dometic PowerCare work in any portable toilet.
• Lubricate the blade-valve seal at the start of each season and mid-season with a silicone-based lubricant.
• Carry a spare seal — they are inexpensive and easy to fit.
• Pair the toilet with a Kampa or Blue Diamond pop-up toilet tent for a complete budget sanitation setup.

Is Blue Diamond Right for You?

If you want a functional portable toilet at the lowest possible price and you camp occasionally, Blue Diamond is an excellent choice. If you camp frequently, prioritise comfort or need long-term durability, stepping up to a Thetford Porta Potti or Dometic model is a worthwhile investment.

Browse the full range of budget and premium portable toilets at UK Camping and Leisure and find the right balance of price and performance for summer 2026.