---
title: 30 Floors Up Roblox Water Guide: Store, Treat, Find More
description: How water works in 30 Floors Up: filling 10 L buckets and the 50 L bathtub before the taps stop, treating rain water, the water heater, and the floor 27 valve that brings water back.
url: https://30floorsupguide.wiki/survival/water/
---

Floor 30 · Survival

# 30 Floors Up Roblox water: store it, treat it, find more
Where your water comes from

- 1 **Fill everything**Tub ~50 L, buckets 10 L, bottles 1 L, while the taps run

- 2 **Store on the rack**Counts toward the survival guide’s days

- 3 **Taps stop**Day 2–4, with the power cut

- 4 **Loot and treat**Other flats, rain water, the heater’s 15 L: boil first

- 5 **Open the floor 27 valve**Wrench on the valve riser: taps run again

_Water sources in the order players use them, from recordings of 2–8 November._

**Short answer:** fill every bucket and bottle while the taps still run (a full bucket holds 10 L, the bathtub about 50 L) and store them on the water rack. After the taps stop, drink stored clean water first, treat rain and heater water before drinking it, and open the **valve riser on floor 27 with a wrench** to bring the taps back.

Water is the supply that runs out first. In one guide’s day 1 survival summary, 18 L of clean water was enough for **nine days at full rations**, which works out to about 2 L a day per person at full rations; lower rations stretch it.

## How much water can you store before the taps stop?

| Container | Holds | Where players found it |
| --- | --- | --- |
| Cleaning bucket | 10 L when filled to the top | Under the sink; more buckets in cupboards and in other apartments |
| Bathtub | about 50 L | Your bathroom; leave the plug in and fill it |
| Bottles (1 L) | 1 L | Kitchen, closets, other apartments; sealed bottles cannot be refilled once the water is off |
| Jerry can | not shown | Your apartment; one group found it next to the toolbox |

Players who filled the tub, every bucket and the spare containers reported between **68 L and 100 L** of clean water by day 2. Fill buckets right to the top: the game checks whether the water is safe to drink, and a half-filled bucket wastes a trip.

The objective “fill all containers before the taps run dry” appears on day 2. Treat it as the last call; one player who waited found the tap dry while trying to fill a bottle.

## How do you treat water?

Only water from the taps before the cut counts as clean. Everything else is marked **untreated**:

- **Rain water** can be collected, but must be treated before drinking.

- **The water heater** in the utility room still holds about **15 L of untreated water** after the cut; the game tells you to drain it at its base when you need it. If you get a “leak” message, shut the **red valve** first.

- **Treating** means boiling. One co-op group was told the water was unhealthy until they turned the knob and boiled it; the portable gas stoves found in several apartments are the likely heat source, though no recording shows the full steps yet.

The survival book’s rule is short: treat collected water.

## How do you get water after the taps stop?

- **Take it from other apartments.** Empty apartments still have bottles, buckets and full tubs. One guide maker also turns off the water supply in other apartments so more is left for you.

- **Drain the water heater** and treat it (above).

- **Open the valve riser on floor 27.** It sits behind a door on floor 27 that you force open, and it needs the **adjustable wrench**. Turning it restores the water: one player’s taps came back right after, and another guide says it pumps water up to the rooftop tank. Refill everything as soon as it runs. Getting there: [vents and lift shafts](https://30floorsupguide.wiki/building/vents-and-lift-shafts/); finding the wrench: [tools](https://30floorsupguide.wiki/items/tools/#wrench).

## How do you drink?

Hold the container (a bottle or bucket) and use the drink action; the thirst bar refills. Thirst drains faster than hunger, so drink before long trips out of the apartment. Neighbors also ask for water: Dev Patel on floor 31 needs clean water ([neighbors list](https://30floorsupguide.wiki/neighbors/everyone/)).

## How long will your water last?

The survival guide in the game does this count for you, but it helps to know the scale before the taps stop. The one figure players have shown is **18 L = nine days at full rations**, so about 2 L a day per player at full rations. Working from that (our arithmetic, not a game number):

| Stored clean water | Solo, full rations | Group of 4, full rations |
| --- | --- | --- |
| 1 bucket (10 L) | about 5 days | about 1 day |
| Tub only (~50 L) | about 25 days | about 6 days |
| Tub + 2 buckets (~70 L) | about 35 days | about 9 days |
| 100 L (best day-2 stock seen) | about 50 days | about 12 days |

Reduced and emergency rations stretch these further; the game has not shown the exact rate for each level. A group of four drains water four times as fast, which is why co-op runs need the floor 27 valve much sooner than solo runs.

## Water mistakes from the recordings

- **Waiting for the day 2 objective.** By the time it appears, you may have hours, not days.

- **Trying to fill the toilet.** A co-op group thought about it; the game does not let you store water there.

- **Counting sealed bottles as refillable.** Once the taps are dry, they stay empty.

- **Drinking untreated water.** The game marks rain and heater water as unhealthy until it is boiled.

## Watch it in 30 Floors Up Roblox

- [30 Floors Up Guide! (How To ESCAPE, Tips & Tricks, Walkthrough)](https://www.youtube.com/watch?v=NnM4NxmpHKI) ItzVexo · recorded 6 November 2026 jump to [01:44](https://www.youtube.com/watch?v=NnM4NxmpHKI&t=104s), [04:49](https://www.youtube.com/watch?v=NnM4NxmpHKI&t=289s), [06:14](https://www.youtube.com/watch?v=NnM4NxmpHKI&t=374s), [07:40](https://www.youtube.com/watch?v=NnM4NxmpHKI&t=460s)

- [30 Floors Up Roblox Ep. 2](https://www.youtube.com/watch?v=chLyWZ4wics) RyanThaGamer · recorded 8 November 2026 jump to [00:40](https://www.youtube.com/watch?v=chLyWZ4wics&t=40s), [12:46](https://www.youtube.com/watch?v=chLyWZ4wics&t=766s), [24:57](https://www.youtube.com/watch?v=chLyWZ4wics&t=1497s), [26:20](https://www.youtube.com/watch?v=chLyWZ4wics&t=1580s)

- [30 Floors Up: how to open the door to the rooftop, find the wrench, open emergency door](https://www.youtube.com/watch?v=8BguhI_YOqo) Calculus Physics Chem Accounting Tam Mai Thanh Cao · recorded 7 November 2026 jump to [05:43](https://www.youtube.com/watch?v=8BguhI_YOqo&t=343s)

- [I NEED TO ESCAPE this floor... 30 Floors Up Roblox (Russian)](https://www.youtube.com/watch?v=cUSR_QNigu8) ФОКСИК · recorded 5 November 2026 jump to [00:21](https://www.youtube.com/watch?v=cUSR_QNigu8&t=21s), [05:29](https://www.youtube.com/watch?v=cUSR_QNigu8&t=329s), [05:50](https://www.youtube.com/watch?v=cUSR_QNigu8&t=350s)

Checked 8 November 2026 against recordings from 2–8 November 2026 (Update 1.0) and the official Roblox page. [How this guide checks facts](https://30floorsupguide.wiki/about/#how).

## More Survival guides

- [Beginner guide (day 0) Every tutorial objective of the first evening in 30 Floors Up in the order the game gives them: TV, lock, fill buckets, store food, read the guide, answer the door and sleep.](https://30floorsupguide.wiki/survival/beginner-guide/)

- [Food & rations Where to find food in 30 Floors Up, storing it in the pantry, the full, reduced and emergency ration settings, the survival guide day count and why you need a knife or can opener.](https://30floorsupguide.wiki/survival/food-and-rations/)

- [Health, sleep & fatigue The hunger, thirst, fatigue and stamina bars in 30 Floors Up, why health does not regenerate, where bandages are, and what happens if you stay out after dark or fall asleep in the hall.](https://30floorsupguide.wiki/survival/health-sleep-and-fatigue/)

- [Zombies & combat How to kill zombies in 30 Floors Up with the hit-and-step-back rhythm, what noise draws them, runners, the nights the crowd comes, and why cleared hallways fill up again.](https://30floorsupguide.wiki/survival/zombies-and-combat/)

- [Barricades & doors How to secure your apartment in 30 Floors Up: the lock, the chain and the peephole, pushing furniture against the door, repairing it after a break-in, and not sealing yourself in.](https://30floorsupguide.wiki/survival/barricades-and-doors/)

- [How to escape The two ways to finish 30 Floors Up, surviving 100 days or escaping, what the radio broadcast and neighbors point to, the routes players have opened so far and what is still unconfirmed.](https://30floorsupguide.wiki/survival/how-to-escape/)