EPANET MODEL VALIDATION

Your model appears to be missing pipes (or have closed pipes) connecting these nodes to the source.

Hello Abdulquawiyy,

In addition to Tom's reply, after importing the EPANET model available on WaterGEMS, I noticed that a main section of the network is imported disconnected from the rest of the network, so to be able to repair your model and receive a successful simulation of your network, you must reconnect these nodes of the model. As exemplified by the nodes highlighted in green below:

To find the disconnected sections, you can follow the steps described in the article below:

Node / Pipe is not connected to, or is isolated from, a boundary (reservoir or tank) user notification

Two other useful articles for importing EPANET files are:

What are the limitations of importing/exporting EPANET files?

Troubleshooting problems with importing EPANET or EPASWMM files

Thank you Luca, I have connected it and it's been validated. 

Thank you