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Dying Light: The Beast Hydro-Puzzle Walkthrough: Safe Code and Waterworks

A step-by-step Hydro-Puzzle guide for Dying Light: The Beast, including the unlock condition, Waterworks safe code 27-1-15, sewer encounter, exit route, and listed rewards.
Length2 min Posted Quest giverVGSources Team
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To complete Hydro-Puzzle in Dying Light: The Beast, check pressure at the industrial Pumping Station, investigate the Waterworks Repair Facility, use the safe code 27-1-15 to get the Chief Engineer’s office key, then follow the yellow pipe into the sewers. After helping Damian and his family, cut power on the way out and leave the Waterworks Administration building.

How to unlock Hydro-Puzzle

Hydro-Puzzle is an Old Town side quest that becomes available after The Cable Guy. Return to Pietro at Town Hall to receive it. If the quest has not appeared, complete The Cable Guy first, then speak with Pietro again. PowerPyx’s side-quest listing corroborates the unlock condition and quest giver.

Check the water pressure and enter the facility

  1. Go to the industrial Pumping Station and check the water pressure.
  2. Speak with Pietro, then travel to the Waterworks Repair Facility.
  3. The main entrance is locked. Circle around to the ladder and scaffolding, climb to the roof, enter through the air ducts, and drop into the building.

Find the office key and investigate the sewer

Open the safe

Locate the Chief Engineer’s office. Its key is in a safe in another room. Read the Incident Report for the combination: 27-1-15. Open the safe and take the key.

Follow the sound and yellow pipe

Continue to the Sewer Maintenance Point and check the pressure there. Listen for the clanging, then follow the yellow pipe into the sewers. GameTrek’s Hydro-Puzzle walkthrough gives the objective sequence and safe code; Gamer Guides’ walkthrough also covers the pressure checks and sewer investigation.

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Help Damian and get out of the Waterworks

  1. At the source of the clanging, clear the infected.
  2. Speak with Damian and his family. Damian is the Chief Engineer and gives you the Waterworks Admin Key.
  3. Follow the exit route and cut the electricity as you go.
  4. Leave the Waterworks Administration building. The quest completes outside, when reinforcements from Town Hall arrive.
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Hydro-Puzzle rewards

GameTrek lists these rewards for completing the quest:

  • 10,000 XP
  • Bruiser Bracer
  • Two Beginner Manual Pages

These are guide-reported rewards; exact enemy behavior and patch-specific changes are not established by the walkthrough sources.

Quick Recap

Rank #4
Dying Light: The Following Enhanced Edition (Xbox One)
  • KEY FEATURES:Enhanced Version of the Game - Dying Light is now bigger, better and scarier than ever before. Enjoy the ultimate zombie experience as you scavenge for supplies, craft weapons, and do anything you can to survive in a city ravaged by the zombie virus.Expanded with Dying Light: The Following - Discover the untold chapter of Kyle Crane's story thanks to this massive expansion. Investigate a mysterious cult as you leave the quarantine zone and travel to the seemingly serene countryside - a region bigger than all areas of the original game combined!Drive to Survive - Dying Light: The Following introduces the drivable dirt buggy that you can freely customise and upgrade with special weapons, attachments and decals to create your most deadly weapon yet.All DLCs and Updates - Get all the additional content ever released for Dying Light in one go, including the Be the Zombie multiplayer mode, the Cuisine & Cargo challenge missions, the Ultimate Survivor Bundle, The Bozak Horde game mode, and much more.
Rank #3
Dying Light: The Beast
  • - You are Kyle Crane, and after years of brutal experiments, you want revenge.
  • - Experience a unique blend of open world and survival horror as you hunt down the man who transformed you into half man, half beast.

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