MadMax Trade Supply
A submersible pump in an open basement sump basin with a float switch and alarm box nearby.

Sump & Effluent Pumps & Alarms

Sump, effluent and backup pumps, plus high-water alarms, float switches and discharge fittings. Match the pump by horsepower, switch type and discharge size, or send the model printed on your current pump. Electrical and pit work can be hazardous; follow local code and the pump maker's instructions.

Available to order

Prices include sales tax (see terms). Items marked "Shipping calculated before payment link" have shipping calculated and shown in your payment link before you pay. Typical delivery is a few business days in the contiguous United States. A delivery estimate is confirmed in your payment-link email. Shipping to Alaska, Hawaii, Puerto Rico, other US territories and APO/FPO addresses is not included in any price; we quote it in your payment-link email before you pay. Images are representative; tap a picture to enlarge it.

Don't see your exact item? Email us the part number or size: tamara@madmaxsupply.com

Attributes we list for each item: Part type, Horsepower or switch type, Discharge size, Voltage.

Fix-it guides

Buying guides

FAQ

The alarm is sounding. What should I do?

Limit water use, check that the pump has power, and call a plumber if the pit is rising. An alarm means water is high — a new pump or float is only useful after the cause is clear.

How do I size a replacement pump?

Read the horsepower, switch type and discharge size on the existing pump, or send a photo of the nameplate. Pit diameter and typical inflow also help.

Do you sell battery backup systems?

Yes, we can quote a backup pump or alarm. Battery chemistry may affect shipping; we will confirm the method in the quote.