To: Honorable Mayor and Members of Town Council
Through: David L. Corliss, Town Manager
From: Mark Marlowe, P.E., Director of Castle Rock Water
Matt Benak, P.E., Water Resources Manager
Rick Schultz, Water Efficiency Supervisor
Title
Ordinance Amending the Castle Rock Municipal Code by the Addition of a New Chapter 4.06 Regarding Plumbing Fixtures (Second Reading - Approved on First Reading on March 4, 2025, by a vote 7-0) [The entire Castle Rock Service Area]
Body
________________________________________________________________________________
Executive Summary
The purpose of this memorandum is to request Town Council approval of an Ordinance (Attachment A) to require the installation of ultra-high-efficiency (UHE) toilets for all new residential construction. Specifically, calling for the installation of 0.8 gallons per flush (GPF) or less tank-type toilets, and flushometer-style toilets not to exceed 1.0 GPF. Flushometer-style toilets require a slightly higher volume of water to function properly.
As part of Castle Rock Water’s (CRW) goal to drive water conservation to 100 gallons per capita per day (gpcd) by 2050, staff is proposing this requirement, which requires no behavioral changes or disruption to CRW customers.
This ordinance is scheduled to go into effect under all new building permits within the Town’s service area starting May 15, 2025.
Budget Impact
Adoption of this ordinance will have significant impact to reducing the need for developing additional water supplies and has the potential to save approximately $6,500,000 to $8,000,000 or more in the water resources fund over time depending on long term development of the community.
Staff Recommendation
Staff recommends approval of a change to Town Code to require the installation of 0.8 gpf or less tank type toilets, and Flushometer-style toilets not to exceed 1.0 gpf for all new residential installations.
Proposed Motion
“I move to approve the Ordinance as introduced by title”
Alternative Motions
“I move to approve the ordinance as introduced by title, with the following conditions: (list conditions).
“I move to continue this item to the Town Council meeting on _____ date to allow additional time to (list information needed).”
Attachments
Attachment A: Ordinance