When our technicians install a soft water system, they will simply remove the loop and plumb in the softener. There should also be a drain line fairly close to which they will tie into. After the soft water system is installed, the soft water will run throughout your house. When a house is pre-plumbed with a soft water loop, the hose bibs located outside are not included in the soft water loop and therefore provide hard water to be used for any hose locations, irrigation, and pool auto-fills. AZ Water Solutions offers soft water loops in Phoenix, AZ.