inp <- file.path( find.package("epanet2toolkit"), "extdata","Net1.inp")
ENopen( inp, "Net1.rpt","Net1.bin")
ENsolveH()
ENsetqualtype("EN_CHEM", "Chlorine", "mg/L", "")
ENsolveQ()
ENclose()
# clean-up the created files
file.remove("Net1.rpt")
file.remove("Net1.bin")
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