DeWalt 20V MAX Powered Water Tank (Tool-Only)

Why I reached for a cordless water supply

Cutting concrete and core drilling are messy jobs even on good days. The biggest constant is the need for a steady water feed to control silica dust and keep slurry manageable. I’ve used everything from garden hoses to manual pump sprayers and makeshift siphons. They all work—until they don’t. Between inconsistent flow, tripping over lines, and constant re-pressurizing, I wanted a jobsite-friendly, self-contained option I could move around with my tools. That’s what led me to the DeWalt cordless water tank.

Setup and first impressions

Out of the box, the tank feels purpose-built rather than repurposed. The translucent 4-gallon body makes it easy to see your fill level at a glance, and the wide-mouth opening with a tethered cap makes filling and rinsing straightforward. A simple on/off control panel keeps operation foolproof, and the mesh strainer under the cap is a thoughtful touch to keep debris from working its way into the pump.

A few practical details stood out immediately:
- Two well-placed handles make lifting and staging easier.
- The 10-foot braided hose has enough reach for most cut locations without being a tangle hazard.
- The quick-connect at the end of the hose lets me swap between the included adjustable spray nozzle and the tool hookup without wrestling with threads.

It’s worth noting the tank ships as a bare tool. If you’re already on DeWalt’s 20V MAX platform, you’re set; otherwise you’ll need to add a battery and charger to your cost and carry list.

On the job: dust suppression and tool hookups

I ran the tank primarily with a concrete cut-off saw and a core drill, both of which benefit from consistent flow to keep silica under control. Hookup is as simple as clicking the quick-connect into a wet-cut attachment or onto the saw’s dust control port. With the tank switched on, the pump delivers a steady stream without me having to periodically pause and re-pressurize like I would with a manual sprayer.

A few real-world notes:
- Flow consistency was the biggest upgrade. I didn’t have to feather a trigger or maintain pressure; the water was just there.
- For spot cleaning and slurry management, the included spray nozzle was surprisingly handy. It’s not a pressure washer, but it has enough bite to keep the work area workable.
- The mesh strainer kept grit out of the pump during refills from buckets on muddy sites. I still recommend pre-screening particularly sketchy water sources.

Importantly, when paired with a cut-off saw or core drill, this setup can be considered OSHA Table 1 compliant. If you’re working under silica rules, having a portable, compliant water source takes a lot of stress out of your setup.

Flow, runtime, and noise

DeWalt doesn’t publish a flow rate, so I can’t quote a specific number. What I can say is that the output stayed even through the tank’s capacity and matched what my saw needed for wet cutting in concrete and pavers. I never felt starved for water, and I didn’t have to throttle back the cut.

Runtime will depend on your battery and how long you keep the pump running at a stretch. Because the pump isn’t running a high-draw motor like a saw, it sips compared to cutting tools. With a standard 20V MAX pack, I could work through the tank’s 4 gallons without battery anxiety. Your mileage will vary, but I never ended a tank short because of the battery.

Noise level is unobtrusive. It’s an electric hum rather than a roar, and it fades into the background of a jobsite. Conversations and saw noise easily drown it out.

Portability and ergonomics

At 13.5 pounds empty, the tank is easy to lug around. Full, it’s a different story: four gallons of water adds roughly 33 pounds, bringing the total to the mid-40s. That’s not unreasonable, but it’s not featherweight either. The dual handles are comfortable, and the square-ish footprint makes it stable in a truck bed or on a cart.

A few tips after hauling it around:
- Stage the tank as close to your cut as practical before filling; you’ll save your back.
- Use the braided hose reach to your advantage. Ten feet is enough for most cuts without moving the tank mid-job.
- If you’re already rolling T-Stak or ToughSystem boxes, the compatibility makes transport and storage more organized. I’ve strapped it alongside my saw kit to minimize trips.

Maintenance and durability

The wide-mouth opening makes cleanup easy. Rinse the tank at the end of the day, run a little clean water through the pump, and you’re ready for the next job. The tethered cap is one less loose part to lose in the mud.

The braided hose has resisted kinks and abrasion well, and the quick-connects haven’t leaked. The tank’s translucent body has held up to bumps and scrapes without clouding. While DeWalt doesn’t specify the tank material, it behaves like a tough polymer—plenty rigid for jobsite use but not brittle.

You also get a three-year limited warranty and a 90-day return window, which is reassuring for a niche tool.

Integration and storage

This tank is compatible with Wireless Tool Control if you add the accessory, letting you pair it with tools or a remote. I ran it with simple manual on/off and had no complaints, but remote control could be a nice quality-of-life add for core drilling where you want to stop/start flow without walking back to the tank.

The T-Stak and ToughSystem integration is more than marketing. If your crew already standardizes on those systems, the tank slots into your workflow neatly. For mobile crews, that matters.

Where it falls short

• Price-to-function ratio: Compared to basic pump sprayers, this is a premium ask for a single-purpose tool. You’re paying for steady, hands-free flow and jobsite integration, not for a multi-tool. If you only occasionally need water for small cuts, a manual sprayer may make more sense.
• Weight when full: Four gallons is the right capacity for productivity, but it’s not light. Plan your staging to avoid repeated carries with a full tank.
• Bare tool only: No battery or charger included. That’s fine for DeWalt users but raises the barrier for everyone else.
• No specified flow rate: The real-world performance is solid, but spec-driven buyers may wish DeWalt published a flow range.

Who it’s for

• Pros who need Table 1 compliance and a predictable water supply for cut-off saws and core drills.
• Crews already invested in DeWalt 20V MAX who want a cordless, hose-free solution that travels easily between sites.
• Remodelers and hardscapers who routinely cut pavers, concrete, or tile and are tired of pumping sprayers or hunting for hose bibs.

Who it’s not for:
- DIYers or occasional users who can live with the compromises of a manual sprayer.
- Shops with ready access to pressurized water and long hose runs.

Recommendation

I recommend the DeWalt cordless water tank for professionals who regularly perform wet cutting or core drilling and value consistent flow, quick setup, and OSHA-friendly dust control without tying into a hose line. The combination of steady pump output, a jobsite-tough design, an easy-to-clean tank, and straightforward tool hookups makes the day go smoother.

If your water needs are occasional or you’re price-sensitive, a manual pump sprayer will get the job done for far less money. But if you’ve ever lost rhythm because you were re-pressurizing a sprayer, or you work on sites where hose access is impractical, this tank earns its keep through time saved and consistency delivered. For DeWalt 20V MAX users in particular, it’s a practical, purpose-built solution that solves a real problem well.