Per the SJ10 manual:
The inlet of the SumpJet� is factory equipped with a SharkBite� push-type fitting. This fitting can be used with various approved 3/4-inch potable water tubing and pipe, such as PEX tubing (ASTM F876, CSA B137.5), copper pipe (ASTM B 88), or Copper Tube Size (CTS) CPVC pipe (ASTM D 2846, CSA B137.6). Follow the instructions below for connecting the municipal water line to the SharkBite�. For more details on using the SharkBite� go to www.cashacme.com.
If you have any other questions, please let me know.