The credit, called a High Bill Courtesy Consumption Adjustment, addresses the first bill following the exchange.
Fort Worth Water said the new meter installation must show water use that is at least twice as high for the same billing period a year ago.
If eligible, customers may receive a credit equal to 50% of the difference above the water use for the bill in question.
For example, if the difference is $50, the customer could receive a $25 credit, Fort Worth Water said. The adjustment is applied as a credit to the account.
As part of the credit, customers will receive their usage data with an explanation of water use.