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Sewer Systems

Grinder Pumps

W-Series | WH101 Grinder Pump Station

WH101 largeThe WH101 features an open-wetwell tank design and is an ideal choice for single-family homes. Grinder pumps carry wastewater from the home to the central sewer and/or treatment system through small-diameter pipes.

Featuring the E/One Extreme grinder pump, the WH101 offers a high level of reliability and ruggedness.

This model was previously known as the GP1010 or GP 1000 Series.

Grinder Pump Station Drawings & Installation Instructions

(For Stations Utilizing the Universal Wet Well, Manufactured AFTER December 18, 2023)

WH101 Drawings (PDF, 1.8 mb)

WH101 Drawings (zipped DXF, 3.8 mb)

W-Series Installation Instructions (PDF, 1.5 mb)

Extreme Series Pump Curve (PDF)

Download Ballast Force Calculations & Assumptions NA0842P01 (PDF, 2.4 mb)

Download Product Specification

Grinder Pump Station Drawings & Installation Instructions

(For Stations Utilizing the Corrugated Wet Well, Manufactured BEFORE December 18, 2023)

WH101 Drawings (PDF, 1.5 mb)

WH101 Drawings (zipped DXF, 2 mb)

W-Series Installation Instructions (PDF, 2.5 mb)

Extreme Series Pump Curve (PDF)

Download Product Specification

Recommended Alarm Panel

E/One Sentry Protect Plus 

Additional alarm panel options are available.


E/One's WH101 grinder pump station consists of a pump inside an open wetwell tank. The grinder pump, motor controls and level-sensing are integrated into a compact unit, easily removable for service.

  • The WH101 model has a cable that connects the motor controls to the level controls through watertight penetrations.

The tank is made of tough, corrosion-resistant HDPE and offers 100 gallons of capacity. A single WH101 can accommodate the sewage flow from two single family homes or up to 700 gallons per day.

Units are available to accommodate a wide range of depths. E/One requires the installation of its stainless steel UNI-LATERAL to prevent backflow from the sewer system from entering the grinder pump station.

Inlet Connections: 4" inlet grommet standard for DWV pipe. Other inlet configurations available from factory.

Discharge Connections: Pump discharge terminates in 1-1/4" NPT female thread or socket fitting. Can easily be adapted to 1-1/4" PVC pipe or any other material required by local codes. 

15 gpm at 0 psig
11 gpm at 40 psig
7.8 gpm at 80 psig

E/One Grinder Pump Operational and Electrical Information