How To Treat Untreated Water In 30 Floors Up

Zombie survival sim 30 Floors Up is pretty unusual in its complexity. The game is full of choices, and things to discover, that will make a break your days surviving the zombie apocalypse. I’m working on a more comprehensive guide for this beast of a game, but while I’m doing that, I wanted to address a few things survivors appear to be struggling with. One thing I’ve seen a lot of people stumped on his how to treat untreated water in 30 Floors Up. Just follow along below to find out, you might also want to review the tips below on making the most of your water supplies.

How To Treat Untreated Water In 30 Floors Up

30 Floors Up is all about conserving resources for as long as possible, and one of the key things you’ll need to keep track of is water. You need to drink some every day to maintain your stats, and once you’ve reached Day 2, the mains are shut off. That means getting creative.

Getting Untreated Water

You can get untreated water from the following sources.

  • Collecting rain water.
  • Draining the boiler in the cleaning cupboard.
  • Sometimes found in buckets in other apartments.

The rain water is a little more important than the others, as it’s potentially a renewable source of water… the problem it the water isn’t safe to drink. You’ll need to deal with that. Untreated water appears grey in an open container, while treated water looks blue.


How To Treat It

Screenshot from 30 Floors Up, showing the location of the Treatment Tablets in the apartment's bathroom cabinet, and overlaid arrow pointing to where to find them on the shelves.

Once you have your water, you need to find Treatment Tablets. There are some in your apartment’s bathroom cabinet, over the sink. (See the screenshot above.) Once you have these, hold them in your hand by selecting them from the hotbar, and hover your cursor over a water container with untreated water inside. Then, hold R when the prompt appears. You will expend one use of the Treatment Tablets to turn the water clean. The ones in your bathroom cabinet have 3 uses, allowing for 30 more Liters of water.

As things proceed, you should also be able to unlock ways to boil water, which will let you treat water more renewably, but the tablets are your best shot in the early days of your run.


Water Saving Tips

To avoid getting to the point where you need to collect the untreated stuff, there are a few things you can do in the early stages of the game to increase your water capacity. These can make things easier for you later on.

  • Fill the bathtub before the water switches off at the end of Day 2. You can put the plug into the bath drain and fill it completely. This will give you 60 Litres of clean water in reserve.
  • Fill all the cleaning buckets. You should be able to find at least two buckets around, make sure to fill those up and store them while the water is running.
  • Fill the jerry can. You can find a 20 Litre jerry can in the bathroom. You can’t fill this directly from the kitchen sink like you can buckets. Instead you’ll need to fill up a cleaning bucket and decant it into the jerry can. It’s a good idea to do this before the water shuts off.

All this should give you 100 Litres to make use of, which should tide you over for some time.


That’s the guide! Hope it’s helped you survive a few more days at least. Stay tuned for more 30 Floors Up content soon. In the meantime, if you’re playing much Roblox horror, maybe take a look at my Pasahero walkthrough. It’s another game on the platform that I think is genuinely good, and pretty underrated.

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