Second water meter in a duplex

[Jeff S.]

Old Portland duplex with single water line. Have owned many years and always wanted to add a second line but the cost.

Would you EVER consider spending $17,800 to save $2493 per year in water cost?  We do know that water will keep going up. The payback is around 7 years.

Yes I know about submetering and all but trying to keep track of all that lots of work.