MadMax Trade Supply
Prices include the sales tax we pay at purchase (shown for Minnesota; your cart updates it for your ship-to state) and, where noted, shipping. No separate tax line. Order online; we email a secure payment link before anything ships.
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.

Shop 30 priced items

Price includes shipping and the sales tax we pay at purchase (shown for delivery to Minnesota; your cart updates it for your ship-to state). No separate tax line at checkout. 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. Images are representative; tap a picture to enlarge it.

Don't see your exact item? Request a quote for any item below — the form will include the SKU. Request a quote

More items (quote only)

ItemSKU (internal)Price
Submersible sump pump (by HP and switch type)MM-SMP-001Price coming soon — request a quoteRequest a quote
Pedestal sump pump (by HP)MM-SMP-002Price coming soon — request a quoteRequest a quote
Effluent pump (by HP)MM-SMP-003Price coming soon — request a quoteRequest a quote
Backup sump pumpMM-SMP-004Price coming soon — request a quoteRequest a quote
High-water alarm, indoorMM-SMP-005Price coming soon — request a quoteRequest a quote
High-water alarm, outdoorMM-SMP-006Price coming soon — request a quoteRequest a quote
Float switch, mechanicalMM-SMP-007Price coming soon — request a quoteRequest a quote
Wide-angle pump switchMM-SMP-008Price coming soon — request a quoteRequest a quote
Check valve (by discharge size)MM-SMP-009Price coming soon — request a quoteRequest a quote
Sump basin lid (by diameter)MM-SMP-010Price coming soon — request a quoteRequest a quote

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

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.