As a kid, we had well water. I know that we had sulfur in the water, but most of the time you never could tell. My parents installed a water filter when I was about 8, one of those with a filter mounted under the sink that's supposed to last a year or two. Within months, the filter was impacted with sulfur deposits and the whole house stank of rotten eggs. They ripped the filter out and that was that. To this day, that house is still on well water, and we all drink it unfiltered without any noticeable taste.
A lingering smell may well be from evaporation of any standing water (such as in traps, pipes, hoses, etc.) leaving sulfur deposits. I would honestly run some water down each sink, flush every toilet, run the washer, etc. and then air out the house and re-evaluate before spending money on any water filtration system.
As for hard water, that's another matter entirely. I know some people insist on softening their water to prolong the life of the pipes, but I honestly cannot stand the taste of softened water. Before buying into any system that softens, I'd ask for a test so you can taste it and see if you can stand it.
Cristeen ~ Always remembering our warrior ~ Our is 3, how'd that happen?!?!
We welcomed another warrior in May 2012!!
2012 Decluttering challenge - 575/2012