On Mon, 20 Jul 2015 16:43:35 -0700 (PDT), Chiefjim
wrote:

Recently moved into a mid 70's built house in south Texas. The house was plumbed for a water softener with the connection in the garage.

Evidently this was a planned event as the structure has exterior spigots for both softened and regular water.

Am concerned by the lack of a drain anywhere in the garage. Would a drain not be required 10, 20, 30 years ago? Might there be an alternative method?

Seriously considering adding a water softening system to the house. Any dangers doing so after a previous unit that was removed perhaps decades earlier?

Two places to look for a discharge drain line. One is if the softener
has a line through the garage wall that ties into the external sewer
line. A small sized line. Just barely covered outside by soil. The
other is if the discharge line is above the clothes washer drain where
the washer drains.