The answer to 'how much to fix water line replacement in my area' is that the cost can vary significantly depending on several factors. In general, you can expect to pay anywhere from $1,500 to $5,000 or more for a full water line replacement project. The exact cost will depend on the length of the line, the material used, the accessibility of the pipes, and whether any landscaping or other repairs are needed.
It's important to get quotes from multiple licensed and insured plumbers in your local area, as they will be able to provide a more accurate estimate based on the specific details of your home and project. They can also advise you on the best materials and approach for your situation.