A waste world is an Imperial classification for a planet poisoned by the Imperium’s own industry and warfare. These aren’t just barren rocks. They’re worlds ruined by the very civilisation that claimed them, and the label is a bureaucratic admission that the damage can’t be undone.
What makes a waste world
The Adeptus Terra’s scriptoria classify a waste world when a planet’s surface is covered in toxic residue left behind by heavy industry and centuries of war. The damage is baked into the classification itself, so a waste world isn’t a temporary condition. It’s a permanent verdict.
In practice, these worlds often get treated as post-industrial resource nulls. The Imperium has already stripped what it could, and what’s left is poison. That doesn’t stop people from living there, though. It just means they live on borrowed time.
Known waste worlds
Only a handful of worlds carry the label in Imperial records. Medusa is the most famous, and the most contradictory. It’s filed as a waste world, but the Iron Hands’ homeworld is a death world in everything but the paperwork. That gap between classification and reality tells you a lot about how the Administratum works.
Urath sits in the Agripinaa System and got hit during the Thirteenth Black Crusade. Hattusa II is recorded in the Badab Sector. XV/428 lies out in the Halo Stars, in the Chinchare System, and serves as a waste world for Sabbatorus.
| World | Segmentum | Notes |
|---|---|---|
| Medusa | Obscurus | Iron Hands homeworld; death world in all but name |
| Urath | Obscurus | Agripinaa System; invaded in the Thirteenth Black Crusade |
| Hattusa II | Ultima | Badab Sector |
| XV/428 | Obscurus | Halo Stars; waste world for Sabbatorus |
Why the label matters
A waste world is what happens when the Imperium’s appetite outpaces its ability to clean up. The classification exists because someone has to keep track of planets that are technically still in use but functionally spent.
For the people stuck on them, the label changes little. They’re still breathing the same air. But in Imperial records, a waste world is a planet the Adeptus Terra has already written off as a loss.
Key facts
- A waste world is an Imperial classification for planets poisoned by industry and war.
- The Adeptus Terra defines them as post-industrial resource nulls.
- Medusa is classified as a waste world but is a death world in all but name.
- Urath was invaded during the Thirteenth Black Crusade.
- XV/428 lies in the Halo Stars and serves as a waste world for Sabbatorus.
- Hattusa II is recorded in the Badab Sector.
FAQ
What is a waste world in Warhammer 40k?
It’s an Imperial classification for a planet covered in poisonous residue from industry and warfare. The Adeptus Terra treats these worlds as post-industrial resource nulls, though people still live on some of them.
Is Medusa a waste world?
Yes, officially. But sources note that Medusa, the Iron Hands homeworld, functions as a death world in all but name. The classification doesn’t quite match the reality.
How many waste worlds are known?
Only a few are named in Imperial records, including Medusa, Urath, Hattusa II, and XV/428. The label is rare, which makes sense given how extreme the damage has to be.