First, test your water to get basic answers about its water quality.
Where to begin? Either your water is safe and pleasant tasking as is, or it needs filtering, or there are more advanced issues.
What to test for...?
Nitrites can cause developmental issues.
Chlorine can be very noticeable and distasteful, and it can increase your risk of cancer.
High levels of can cause gastrointestinal issues, liver damage and kidney disease.
High levels of alkaline can cause gastrointestinal issues.
High pH levels can cause plumbing and property damage.
Water hardness can create a bad taste and cause property damage.
Many water providers add flouride, but how much in yours?