The answer to 'how much does water softener cost in Illinois' is that the cost of a water softener can vary significantly depending on several factors. In general, you can expect to pay anywhere from $500 to $3,000 for a new water softener system, including installation.
The exact cost will depend on the size and type of water softener, the complexity of the installation, and your specific plumbing needs. Factors like the water hardness level, the size of your home, and the materials used can all impact the final price. It's important to get quotes from local plumbers or water treatment specialists to get an accurate estimate for your home.