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Hydro Puzzle Walkthrough & Sewer Safe Code
Dying Light: The Beast

Hydro Puzzle Walkthrough & Sewer Safe Code

Complete walkthrough for the Hydro Puzzle quest in Dying Light: The Beast. Find the Sewer Safe code, navigate the sewers, and restore water and power.

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Complete walkthrough for the Hydro Puzzle quest in Dying Light: The Beast. Find the Sewer Safe code, navigate the sewers, and restore water and power.

Walkthrough
  1. 1
    Visit the Pumping Station to get the Water Pressure reading. Break in through a window and parkour to reach behind a metal fence.
  2. 2
    Return to Old Town and check the sewer station for more clues. Loot the building for quest items and rewards, including a smartphone.
  3. 3
    Go to the Water Works Repair facility. The compound is guarded by a Demolisher and virals. Enter via the rooftop vents and shimmy through to the inside.
  4. 4
    Inside the Waterworks building, your objective is to open the sewer safe. The code is 27-1-15. This will award you the Chief Engineer Key, granting access to the Sewers.
  5. 5
    Clear the rest of the building and escape through the ground-level garage door.
  6. 6
    Visit the Sewer Maintenance Point in Old Town. Dispatch the infected guarding it, open the door, and a cutscene will trigger, instructing you to enter the sewers.
  7. 7
    Proceed through the sewers, following the clanging sounds. Be aware of resting zombies that will awaken as you progress.
  8. 8
    In a large square room, parkour up to a new ledge, leading to another room where you must defend against biters and viral attacks.
  9. 9
    After defending the area, go to the door and speak to the people inside to restore the water.
  10. 10
    Head upstairs to deal with power issues. A vent allows access to turn off the power. Use a Firecracker to lure biters into electrified water for easy kills before disabling the power through the vent.
  11. 11
    Head upstairs, open the door, and escape to complete the quest. The area becomes a UV hotspot at night.
Tips
  • You can skip the Demolisher guarding the Water Works Repair facility if you wish.
  • Use Firecrackers to lure enemies into electrified water for easy kills when disabling the power.
  • The completed quest area serves as a secret UV hotspot at night, useful for escaping Volatile chases.
  • Chief Engineer Key
  • Access to the Sewers
  • Completed Hydro Puzzle quest
  • UV Hotspot at the quest location (at night)

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