Notice and timing
How delinquency is handled
Grace period after the due date
Payments are due the last business day of the month, followed by a 5-day grace period before the $5 late charge is assessed.
Late-fee calculation
The 2026 administrative fee schedule lists a $5 late charge after the 5-day grace period, a $15 disconnection-notice charge, and a $26 returned-payment charge. Past-due balances and service fees are due immediately to avoid disconnection, and water service is lienable under Colorado law.
Disconnection timeline
Bills are generated around the 6th-9th and due at month-end; after the five-day grace period a late charge applies. Castle Rock mails late-payment notices mid-month and may issue a Notice of Intent to Disconnect with additional fees; the reviewed pages do not publish a fixed calendar day for physical shutoff.