🛠️ Invention or technique

Composting toilet (Clivus Multrum)

Retrete de compostaje (Clivus Multrum)

Date
1939 (comercial 1964) · confidence medium
Place
Sweden
Credited to
Rikard Lindström
Field
Tools

⚠️ Disputed: the sources disagree.

What it is

A waterless dry toilet with a sloped chamber where excreta and kitchen scraps break down and become compost. Rikard Lindström designed it for country houses without water mains or sewers.

Wikipedia dates the design to 1939; the commercial Clivus Multrum product came in 1964 and the design's location is poorly documented.

What it led to

  • waterless sanitation in isolated houses and arid areas
  • reuse of human nutrients as fertiliser
  • ecological urine-diverting toilets

Links

Sources✓ verified 2026-11-06