The Hamilton Township Municipal Authority’s Rules and Regulation only approve two (2) grinder pump systems:  Hydromatic  OR  Environmental One.  When a sewer extension is designed for a low pressure sewer system, it is designed specifically for the use of one grinder pump system:  either the Hydromatic or Environmental One grinder pump systems.  These two grinder pump systems are different in nature and cannot be intermixed throughout the designed low pressure system.  If you have a Hydromatic grinder pump, you need to replace it with a Hydromatic grinder pump; If you have an Environmental One grinder pump, you need to replace it with an Environmental One grinder pump.  Below is a list of subdivisions/sewer extensions that were designed for Environmental One / Hydromatic grinder pump systems:

Environmental One                                                         

Hydromatic