Smelly water 

Water can smell like bad eggs, rust, garbage or fish. Not something you want!

Also if you have sulfur bacteria in an open container like an aerator it looks like jelly fish it is not harmful, but it is gross to touch or look at.  If you have a two tank system without a peroxide pump that can allow bacteria to grow and can foul your system out causing you to have low pressure in the house. Sulfur is usually the most common issue because it is the most noticeable by the smell it produces .In order to correct any of these issues we need to know how much Sulfur you have and can do that with a simple water test.

TDS

If your water is salty, Please Remember a softener or a complete whole house system will not remove the salt in the water. Reverse Osmosis is the system that will remove the salt.

Lead, Aluminum, Arsenic and other Toxins

These are things that we do not want in the water depending on the levels you may need a whole house RO system. This is crucial information we need to know. If you are trying to remove these items from the water it requires a different filtration media. We can can find this out by doing a little more in depth test and sending it to a state licensed facility, results usually take 1-2 weeks and the tests are a little more expensive depending on what tests need to be ran.