Although most of the Gull Lake Sewer District is serviced by gravity public sewer, parts of the service district -- where homes are not readily serviceable by gravity -- utilize grinder pumps.   Also, the Sherman Lake Sewer District of 2007 elected to utilize grinder pumps in lieu of gravity.  

This section discusses grinder pumps, their operation and use.

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Grinder Pumps Overview and Information
This section describes in general the grinder pump - low pressure sewer system that was installed around Sherman Lake.
For rates and charges, please see Ordinances & Rates.

Sherman Lake Grinder Pump Installation
  (The pictures for the above link are poor quality and are scheduled to be updated.)
For rates and charges, please see Ordinances & Rates.

The pictures below depict installations at Sherman Lake in 2008.

Grinder basin	Electrical connection			Control panel and basin
Control panel 230 volt	Control panel and basin