reimbursement for defective devises/ parts

After purchasing & having installed (by the company), an water conditioner,my water bill began to be excessively high. I contacted the company, who sent out an tech to check the water softener unit and found nothing wrong. The following month my water bill was even larger than the previous excessive bill so I contacted a plumber, who found that the companies pipe had ruptured underneath the house. I have the pipe that the plumber replaced and his invoice stating that the pipe was that of the water softener company. Is the water softener company liable for my excessive water bill; and since I paid this bill, can I demand reimbursement?
Thank you for your time. Your answer will be gratefully appreciated>
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