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Sump, Sewage & Wastewater Pumps
A.Y. McDonald DuraMAC Cast Iron Submersible Sump Pump
A.Y. McDonald
A.Y. McDonald DuraMAC Cast Iron Submersible Sump Pump
- Price
- From $230.02
A.Y. McDonald Thermoplastic High Head Effluent Pump End - 10, 20 and 30 GPM
A.Y. McDonald
A.Y. McDonald Thermoplastic High Head Effluent Pump End - 10, 20 and 30 GPM
- Price
- From $193.20
Franklin Electric IGP-M Series Manual Grinder Pump - 2 HP, 1-1/4 in FNPT Discharge
Franklin Electric
Franklin Electric IGP-M Series Manual Grinder Pump - 2 HP, 1-1/4 in FNPT Discharge
- Price
- From $1,869.47
A.Y. McDonald Cast Iron Vortex Effluent Pump
A.Y. McDonald
A.Y. McDonald Cast Iron Vortex Effluent Pump
- Price
- From $557.68
A.Y. McDonald Guardian Water-Powered Backup Sump Pump
A.Y. McDonald
A.Y. McDonald Guardian Water-Powered Backup Sump Pump
- Price
- From $391.52
A.Y. McDonald DuraMAC High Head Effluent Pump
A.Y. McDonald
A.Y. McDonald DuraMAC High Head Effluent Pump
- Price
- From $591.92
A.Y. McDonald DuraMAC Sewage Ejector Package - 1/2 HP
A.Y. McDonald
A.Y. McDonald DuraMAC Sewage Ejector Package - 1/2 HP
- Price
- From $804.09
A.Y. McDonald Thermoplastic High Head Effluent Pump - 5, 7 and 15 GPM
A.Y. McDonald
A.Y. McDonald Thermoplastic High Head Effluent Pump - 5, 7 and 15 GPM
- Price
- From $1,173.59
A.Y. McDonald Heavy-Duty Cast Iron Vortex Sewage Pump
A.Y. McDonald
A.Y. McDonald Heavy-Duty Cast Iron Vortex Sewage Pump
- Price
- From $1,531.85
A.Y. McDonald High Head Cast Iron Effluent Pump - 3/4 in Solids, 2 in Discharge
A.Y. McDonald
A.Y. McDonald High Head Cast Iron Effluent Pump - 3/4 in Solids, 2 in Discharge
- Price
- From $1,612.78
Franklin Electric Simplex Grinder Pump Control Panel - NEMA 4X, 208-230V 1Ph
Franklin Electric
Franklin Electric Simplex Grinder Pump Control Panel - NEMA 4X, 208-230V 1Ph
- Price
- From $1,083.97
Franklin Electric IGP-SMPX Simplex Fiberglass Grinder Package - Rail System, 24 in Basin
Franklin Electric
Franklin Electric IGP-SMPX Simplex Fiberglass Grinder Package - Rail System, 24 in Basin
- Price
- From $7,223.16
Sump, Sewage & Wastewater Pumps
Wastewater Pumps · All BrandsSump, Sewage and
Sump, Sewage and
Wastewater Pumps
Sump, effluent, sewage, grinder and dewatering pumps from A.Y. McDonald, Grundfos Unilift and Franklin Electric. Choose by what is in the water and how far it has to go.
3 BrandsOne collection
5 Pump TypesSump to grinder
2 in SolidsSewage pumps
Float or PanelSwitch options
Wastewater pumps are chosen by the liquid first. Clear groundwater needs a sump pump; septic effluent with small suspended solids needs an effluent pump; anything from a toilet needs a sewage pump that passes 2 in solids, or a grinder that cuts the solids for a small force main or a long uphill run. Then the switch your basin allows, and the lift.
Watermain Supply supplies sump, effluent, sewage, grinder and dewatering pumps from three manufacturers, with floats, check valves and disconnects on the same order. Send your basin size, vertical lift and pipe run, or call 1-888.510.4036. All products are genuine, factory-new equipment in original manufacturer packaging, sold and supported by Watermain Supply, an independent industrial supplier.
Shop by Pump Type
Each collection holds every brand we carry for that job.
Sump Pumps
Clear groundwater from basement pitsShop Sump
Effluent Pumps
Septic effluent and grey waterShop EffluentSewage Pumps
Raw sewage with 2 in solidsShop Sewage
Grinder Pumps
Cut solids for pressure sewers and uphill runsShop Grinder
Dewatering and Utility
Portable drainage and transferShop Dewatering
Grundfos Unilift
Stainless drainage and wastewater pumpsShop Unilift
Franklin Electric Wastewater
Grinders, non-clog pumps and packagesShop Franklin
Sewage Pump Disconnects
Rail and disconnect fittings for basinsShop DisconnectsHow to Choose a Wastewater Pump
Four questions, in the order that rules pumps in or out.
1. What Is in the Water?
Clear water: sump pump. Septic effluent with small solids: effluent pump. Toilet waste: sewage pump with 2 in solids handling. A small-diameter pressure sewer or a long uphill run: grinder pump.
2. Which Switch?
A vertical float suits a narrow pit; a tethered float needs room to swing; a pump with no switch is run by a piggyback float or a control panel. Each product page lists the switch on every build.
3. How Far and How High?
Total head = vertical lift from the pit to the discharge + pipe friction. Compare sump pumps at 10 ft of head, where buyers compare them; read sewage and grinder pumps at your full duty on their performance tables.
4. Power and Duty
Check the voltage (115-120V or 208-230V, single or three phase), the cord length to the outlet, and whether the pump runs often enough to justify cast iron over thermoplastic.
Quick rule. Sewage basins must be sealed and vented, with a check valve and a shutoff valve on the discharge and a high-water alarm. Plan them with the pump, not after it.
Floats, Accessories and Parts
Complete the basin on the same order.
Why Buy Your Wastewater Pump from Watermain Supply
Engineering-Led Sizing
Send the duty and we check it against the manufacturer's published data before you order.
Multi-Brand Honesty
We sell several brands in every category. If one is not the right fit, we will say so and quote the one that is.
Account Terms Available
Net-30 for qualified contractor, property management and municipal accounts.
Parts and Aftermarket
Genuine repair parts and accessories, matched by model, so the job ships complete.
Frequently Asked Questions
Straight answers to the questions buyers ask us most.
What is the difference between a sump, effluent and sewage pump?
A sump pump moves clear groundwater. An effluent pump moves septic effluent and grey water with small suspended solids. A sewage pump handles raw sewage and passes solids up to 2 in, so it is the pump for a basin that takes a toilet.
When do I need a grinder pump instead of a sewage pump?
When the sewage must go through a small-diameter pressure sewer, a long run or a steep uphill climb. A grinder cuts the solids into a slurry and builds more head than a sewage ejector.
Which float switch should I choose?
Use a vertical float in a narrow pit, a tethered float where it has room to swing, and a no-switch pump where a piggyback float or a control panel will run it. Each listing names the switch on every build.
Do I need a check valve?
Yes, on almost every installation: it stops the water in the discharge pipe running back into the pit each time the pump stops. Sewage basins also need a shutoff valve and a vent.
How do I size the pump?
Add the vertical lift from the pit to the discharge point and the friction in the pipe run, then pick a pump that moves your inflow at that head. The calculator on this page does the arithmetic.
Can you help me choose?
Yes. Send the liquid, basin size, vertical lift, pipe run and power to sales@watermainsupply.com or call 1-888.510.4036.
Ready to Size Your Pump?
Send the liquid, basin size, lift and power. We will reply with the pumps that fit, from the brands we carry.
Technical data on this page is taken from manufacturer product literature and is subject to change by the manufacturer. Confirm against the current installation manual before specifying.
A.Y. McDonald and DuraMAC are trademarks of A.Y. McDonald Mfg. Co.; Grundfos and Unilift of Grundfos Holding A/S; Franklin Electric of Franklin Electric Co., Inc.; Campbell is a trademark of its respective owner. All are used here for product identification only.
Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.
A.Y. McDonald and DuraMAC are trademarks of A.Y. McDonald Mfg. Co.; Grundfos and Unilift of Grundfos Holding A/S; Franklin Electric of Franklin Electric Co., Inc.; Campbell is a trademark of its respective owner. All are used here for product identification only.
Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.
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