I am working on a case study to model water quality (water age,chlorine) for a plumbing system, i.e., water distribution network at household level. However it seems that EPANET does not work well with small scale system (short and small pipes). For example, in terms of water age, the result for water faucets with positive demand (faucets that used daily) works great; however the result for a water faucet with zero water demand (unused) is not right, as shown in the graph below.
Would anyone have encountered this problem before? Thank you very much.