Notice and timing
How delinquency is handled
Grace period after the due date
Late fees are applied on the 28th. The bill's route-specific due dates are the 10th, 14th, 18th, or 22nd depending on route number; the page does not specify a separate grace-day count.
Late-fee calculation
A late fee is posted on the 28th. The current billing page does not expose the fee percentage or flat amount.
Disconnection timeline
A dedicated this detail was not publicly posted. Roma publishes route-specific due dates and the late-fee date but does not publish the full day-by-day cutoff calendar.