Notice and timing
How delinquency is handled
Grace period after the due date
Statements are due when sent and become delinquent after close of business on the last business day of the month; the rules do not express this as a fixed day count.
Late-fee calculation
A delinquency fee is assessed to unpaid charges and added to the next bill; the exact 2026 dollar amount is not exposed in the reviewed public text.
Disconnection timeline
After an unpaid balance remains through a new billing cycle, the District sends a final-notice collection letter giving at least 10 business days to pay, then states the exact disconnect date. A lien may be certified only when statutory thresholds are met, including a balance over $150 and at least six months delinquent.