If your water has an odd odor or strange color to it, you are not likely going to want to use it, much less drink it. There are things that you can do to clean up the water coming into your home, but before you do you need to understand what is causing the problem so it can be treated properly. There are several options for dealing with this problem:
Getting Your Water Tested
Before you can begin to consider filtration or treatment options for your water, you need to know what needs to be filtered out. If you are dealing with hard water, the treatment solution might be different than if you are dealing with a contaminate of some sort. Most businesses that sell filtration systems offer free water testing to get you in the door. Take advantage of it and get a sample of your water tested so you can make some informed decisions when you start looking at filtration. They might try to sell you more than you want or need, but be honest about your budget and see what they can do to work with you.
Installing a filtration system on the water line in the home is called whole-house filtration. The water coming in is filtered before it goes anywhere in the house -- this is the most effective way to ensure all the water is treated, but it is also the most expensive. When you filter everything in this way, you are filtering the water feeding the washer, the dishwasher, and the toilets; literally everything in the house gets filtered, and while that is okay, there are some things that don't need it, and the cost of the filtration equipment may be more expensive over time if you are filtering that much additional water. You will have to decide whether or not you need to filter all the water or just what you consume. Do a little research once you find out what is or isn't in the water so you can get the right kind of water filters for your home.
There are several filtration products that are used right at the tap and can be installed on the faucet permanently. While these filters work well, they are not nearly as effective as the large whole-house systems. There is an alternative that can be installed under the sink that offers filtration like the larger systems, but only on those specific faucets. They are cheaper than the whole-house system and they do a better job than the tap filters. If you only want to filter the water in the kitchen sink, for instance, this is a good option. Talk to the filter company and they can show you the options.