Once you successfully leave the raid, return to ARC Raiders Coins Speranza and speak with Celeste again. Handing over the sample will complete the Water Troubles quest.

Water Troubles Quest Rewards

Completing Water Troubles rewards players with several valuable crafting materials that can help improve gear progression early in the game.
The rewards include:
3x Simple Gun Parts
3x Steel Springs
3x Mechanical Components

These resources are used at the workbench to craft and upgrade important equipment. While the rewards may not seem flashy, they are extremely useful for maintaining steady progression during the early and mid-game stages of ARC Raiders.
Crafting materials become increasingly valuable as better ARC Raiders BluePrints and armor require larger quantities of components.

Why This Quest Is Easy to Miss

One reason Water Troubles frustrates so many players is that the Flood Access Tunnel sits outside the usual high-loot and combat-heavy areas that most players naturally explore.

Many players focus heavily on the Control Tower, Research & Administration buildings, or central combat zones while completely overlooking the lower eastern section of the map.

Additionally, the tunnel entrance blends naturally into the concrete dam structure, making it surprisingly difficult to spot unless you already know what you are looking for.

The quest objective itself also provides limited guidance, leaving many players confused about where to begin searching.

Final Thoughts

Although the Water Troubles quest initially feels difficult, it becomes very straightforward once you know the exact location of buy ARCR Coins the Flood Access Tunnel.

The biggest challenge is simply navigating across the massive Dam Battlegrounds map while avoiding enemy players and dangerous ARC threats. Thankfully, the water sample itself is located only a short distance inside the tunnel entrance, making the objective relatively quick once you arrive.