The audit also identified "systemic errors" in city water billing, affecting 70,000 accounts. That finding was an extension of a 2012 audit of city water-billing errors that resulted in $9 million in refunds. The 2014 audit stated that "as management has not corrected or replaced its water bill system ... systemic errors and limitations" still exist. The most recent audit will not trigger more refunds because it did not identify specific accounts that were overbilled.