The Milwaukee 2579-20 M12 Stick Transfer Pump is a battery-powered water transfer pump built for plumbers, utility crews, contractors, and maintenance techs who need to move standing water out of tight, dirty, hard-to-reach spots. This is a cordless stick transfer pump designed for moving standing water out of pits, basins, trenches, water meter boxes, and sump areas. Model Number 2579-20. If you are tired of bailing water by hand or dragging cords around wet work areas, this tool solves that problem with one-handed operation and the reach to get where a standard pump setup cannot.

What matters most on the job is how quickly it clears water and how little babysitting it needs. This Milwaukee transfer pump moves up to 9 gallons per minute and can pump up to 275 gallons on one M12 REDLITHIUM XC4.0 battery. It also pushes water with a maximum head height of 15 feet, which is enough to move water out of pits and basins, over edges, and toward a better discharge point. The outlet connects to a standard 3/4 inch garden hose, so setup is simple and you can use a hose style most crews already have on hand.

The big design advantage here is the long, narrow form factor. Instead of lowering a bulky pump assembly into the hole and fighting with hose placement, you get a 36 inch submersible aluminum barrel that gives you better inlet control and easier access to water sitting at the bottom of a trench or catch basin. At 48.8 inches tall overall and only 3.6 inches wide, this pump is clearly made for narrow access points and awkward spots where a larger submersible water pump would be overkill or just not fit well.

Milwaukee also put real thought into filtration, which is where a lot of transfer pumps lose time on the job. The HydroPass system uses a 360 degree filter to maximize flow in heavy debris and reduce clogging. That matters in the exact places this pump is meant to work: muddy trenches, catch basins, water meter boxes, and sump pits where clean water is rarely the situation. A threaded filter design also makes removal easier when it is time to clean it out.

From a jobsite practicality standpoint, the one-handed pumping setup is a big deal. You can control the pump with one hand and manage the hose or discharge direction with the other. That gives you better control when you are working around finished surfaces, landscaping, concrete edges, or utility boxes where you do not want water going everywhere. The battery-powered platform also means no extension cords, no searching for an outlet, and less hassle in outdoor or service-call work.

Platform compatibility is another strong point. This pump runs on the Milwaukee M12 battery system and is compatible with all M12 REDLITHIUM batteries. If you already own M12 batteries and chargers, this bare tool makes a lot of sense because it drops right into the system you already use for service and installation work. If you do not, just know this is the tool-only version, so the battery and charger are sold separately.

Who should buy it? If your work regularly puts you around standing water in utility access points, drain work, plumbing repairs, site prep, or light excavation, this cordless water transfer pump is a smart pickup. It is especially well suited for plumbers, municipal crews, facilities maintenance, and contractors who need fast water removal without hauling a full-size pump setup for every small job. It is not trying to replace a large high-volume dewatering rig. It is built to be the faster, cleaner answer for the everyday wet messes that slow down service and repair work.

Milwaukee 2579-20 M12 Stick Transfer Pump is the right fix for the water jobs that waste your time

If you keep running into standing water in service work, this pump is a whole lot smarter than bailing by hand and a whole lot easier than hauling a full-size dewatering setup.

• Who it's for: Plumbers, utility crews, maintenance techs, and contractors dealing with catch basins, meter boxes, trenches, and sump pits.
• Why it stands out: The long 36 inch barrel, garden hose connection, and 360 degree HydroPass filtration make it practical in the exact dirty, narrow spots where most small pumps get annoying fast.
• Worth knowing: This is a bare tool, so bring your own M12 battery and charger. It is built for controlled water transfer work, not replacing a large high-volume site pump.

• What battery platform does this pump use? It runs on the Milwaukee M12 battery system and is compatible with all M12 REDLITHIUM batteries.
• How much water can it move? The maximum flow rate is up to 9 gallons per minute.
• How far can it push water? It has a maximum head height of 15 feet.
• What kind of hose does it connect to? The 3/4 inch outlet attaches to a standard garden hose.
• Can it handle dirty water with debris? It is designed for that kind of work, using HydroPass filter technology and a 360 degree filter to help reduce clogging in heavy debris.