Town of Castle Rock Water
Castle Rock and Town water service limits
Population reference
Approximately 83,815 residents in Castle Rock based on the July 1, 2025 Census estimate. Castle Rock Water reports supporting more than 28,000 customers each month for integrated drinking-water, wastewater, and stormwater services within Town limits.
Billing detail
Broad public detail found
Official destination
Open provider website ↗Provider-specific findings
Billing and account research from public material
Provider-specific research notes are displayed separately from fields that contain only an unavailable-information marker. Read qualifiers in each note and verify current account terms with the provider.
- Billing frequency
- Monthly. Castle Rock reads all water meters during the first three days of each month, generates bills between the sixth and ninth, and sets the due date at the last business day of the month.
- Rate structure
- Individualized water-budget increasing blocks with seasonal irrigation tiers and a fixed renewable-water charge. For 2026 residential water, Tier 1 based on the account’s assigned winter water budget is $3.39 per 1,000 gallons; irrigation-season Tier 2 is $6.91 and Tier 3 is $10.31, while winter excess is $6.91. A 5/8-inch-to-3/4-inch residential service has a $36.30 monthly renewable-water service charge. Castle Rock also publishes drought and water-use-management surcharges.
- Residential cost reference
- A single universal 5,000–7,000-gallon price is not reliable because Castle Rock assigns each address a water budget based on winter indoor use and irrigable area. For a typical 7,000-gallon month within Tier 1, the volumetric component is approximately $23.73 plus the $36.30 renewable-water charge, before wastewater and stormwater. The account’s personalized budget, seasonal irrigation, and drought status control the final amount.
- Wastewater and sewer calculation
- Castle Rock Water is an integrated provider and the bill incorporates drinking water, wastewater, and stormwater. The current 2026 rate materials publish wastewater as a fixed monthly charge plus a volumetric rate; the utility’s water-billing page and 2026 fee schedule should be used for the exact meter-size amount. The public pages reviewed do not state a universal household winter-average sewer formula, so the customer’s adopted account class and actual wastewater rate control the calculation.
- Meter reading
- All Castle Rock water meters are read for actual usage during the first three days of each month, with bills generated and mailed between the sixth and ninth. The public pages reviewed do not identify whether the network is AMR or AMI, but customers can access monthly billed usage, two years of statements, and usage patterns through the online account.
- New-account deposit
- The current Castle Rock customer-service pages do not publish a universal residential startup deposit, credit-check waiver, or deposit-return schedule. New homeowners’ title companies set up service, and new renters generally arrange payment through the landlord. Separate 2026 system-development fees are assessed at permitting, including water, renewable-water, and wastewater capacity charges.
- Activation or transfer fee
- New homeowners’ title companies are responsible for initiating water-service transfer, while new renters arrange service and payment through their landlord. Castle Rock’s public pages reviewed do not publish a routine residential activation or transfer fee; new physical connections and 2026 system-development charges are separate.
Context, not a score
How documentation coverage compares
This profile
100%
overview fields with research notes
Colorado
68%
records with any overview detail
National index
50%
records with any overview detail
Coverage measures what this directory documented. It does not measure service quality, affordability, or regulatory compliance.
Research record
Broad public detail found
7 of 7 fields in this section contain provider-specific public detail in dataset August 1, 2026.
Documented
100%
Primary verification routes
- Town of Castle Rock Water public website ↗
Provider-controlled destination used to confirm current customer instructions.
- EPA Safe Drinking Water Information System ↗
Federal background on public water-system records and their limitations.