Notice and timing
How delinquency is handled
Grace period after the due date
A dedicated this detail was not publicly posted. The reviewed Carmel customer page gives delinquency-notice timing rather than a simple grace-day count.
Late-fee calculation
Water late penalty is 10% of the first $3.00 plus 3% of the remaining billed balance; sewer late penalty is 10% of the amount billed. A returned-payment fee may also apply under City code.
Disconnection timeline
A disconnect notice is sent when an account has an outstanding balance over 45 days. If payment is not received by the notice due date, water service is terminated; a $135.86 disconnect fee is applied before field termination. City code states water service is disconnected for accrued fees and late charges within 60 days of billing and may bar new service for a 45-day-or-more delinquent balance.