Operating Rules - Chapter 4 - Nonpotable Water Service


4.01     Applicability.  This Chapter applies to nonpotable water service supplied through a distribution system to licensed premises within the Combined Service Area. Unless otherwise provided in a water lease or supply agreement, all rules and standards pertaining to the use of potable water are applicable to non-potable water licenses and service.

4.02     Nonpotable Policy.  In order to encourage the most efficient use of water, Denver Water’s policy is to use nonpotable water whenever potable water is not required, such as irrigation and commercial use. Eligibility for nonpotable service will be based on the type of water use and the availability of nonpotable water. Denver Water will determine whether nonpotable water is available and may require the use of nonpotable water by either applicants for new licenses or existing potable water licensees.

4.02.1 New Licenses.

a.        Nonpotable Required at Time of License. If nonpotable water service is determined to be suitable for an applicant for a new license, Denver Water may require such use.

b.         Subsequent Conversion Required. If nonpotable water is required but not available at the time of application, Denver Water may issue a license for potable water service, but may require conversion to nonpotable service, when available, at the applicant’s expense. Even though potable water will be provided temporarily, the nonpotable System Development Charge will be assessed at the time of application.

4.02.2 Conversion of Existing Potable License.

a.         Conversion Required. If Denver Water requires an existing potable water service to convert to nonpotable water, Denver Water will pay for any necessary main extension, tap, service line, and stop box and/or control valve. Unless otherwise agreed to in writing by Denver Water, the customer shall be responsible for all other conversion costs, including costs incurred on the customer’s property. No additional System Development Charge will be assessed for service to the same property in the same volume. No System Development Charge credit will be created by such transfer of service.

b.         Conversion Requested. If a customer requests conversion from potable to nonpotable service, the customer shall pay all the costs required for the conversion, including additional System Development Charges if the new service increases demand over historic levels. No System Development Charge credit will be created by such transfer of service.

4.03     Requirements of Nonpotable Service

4.03.1  Interconnections Prohibited.  Interconnections between any system containing nonpotable water from Denver Water and any other water system are expressly prohibited without prior approval of Denver Water’s Director of Engineering.

4.03.2  Marking of Facilities.  Denver Water may require facilities used to provide nonpotable water service to bear prominent and permanent markings to warn that the contents are nonpotable.

4.03.3  Use Schedule.  As a condition of using nonpotable water. Denver Water may establish timing and flow rate requirements for each nonpotable license.  The Licensee is responsible to design and operate its water system to comply with such schedules.

4.04     Special Conditions for Use of Recycled Water.

4.04.1  Compliance Required.  Licensees using recycled water must comply with Denver Water’s Engineering Standards, Operating Rules and any applicable federal or state law, including Colorado Department of Public Health and Environment Regulations 61 and 84.  Failure to comply may result in suspension of service or revocation of the license under the provisions of Chapter 2.

a.         The Licensee must identify a person responsible for ensuring compliance with all applicable laws and regulations.

b.         The Licensee shall train all maintenance personnel in the safe use of recycled water.

4.04.2 Recordkeeping.  The Licensee must prepare and keep current record drawings showing all recycled water facilities and make them available to Denver Water on request.  The drawings must include the location of all piping, valves, backflow prevention devices, system controllers and any other recycled water facilities.  The Licensee also must maintain a record of the Licensee’s current operation schedules for each system controller and place a copy of the appropriate operation schedule and area of coverage in each controller box in a waterproof container.

4.04.3  Operational Requirements.  The Licensee must operate its recycled water facilities to minimize pooling, ponding and excessive runoff of recycled water. If recycled water is used for irrigation, the Licensee also must adjust and maintain all irrigation spray heads to minimize overspray and windblown spray into other areas used by the public, including sidewalks, streets, playgrounds, drinking fountains, food preparation and picnic areas. If such conditions occur, the Licensee must take steps to adjust its operations or facilities to resolve the condition and prevent a recurrence, including but not limited to repairing leaking pipes, broken sprinkler heads and unreliable valves.

4.04.4 Modifications to Recycled Water Facilities.  The Licensee shall obtain prior approval for proposed changes or modifications to its recycled water facilities that might impact the operation of Denver Water’s recycled water system, including but not limited to increasing recycled water impoundments.  All such changes to facilities must comply with Colorado Department of Public Health and Environment Regulations 61 and 84, if applicable.

4.04.5 Signage.  In areas where recycled water is being used, the Licensee shall install signs or labels in the dominant language(s) expected to be spoken in the area, indicating that recycled water is being used.  The sign or labels shall read “Nonpotable Reclaimed Domestic Wastewater in Use,” “Do Not Drink – Irrigation Water” or other similar language approved by Denver Water.

a.         Industrial Use.  Where recycled water is used for industrial or commercial uses, signs shall be placed at sufficient locations to provide adequate notice to employees, contractors and the public that recycled water is being used.  Each sign shall be at least 12 inches by 15 inches.

b.         Irrigation Use.  Where recycled water is used for irrigation at a park, school yard or similar area, at least one sign shall be located at each parking lot or surfaced vehicular or pedestrian entry to the area.  There shall also be one sign for every 5,000 feet of perimeter of the area, and at least one sign per area.  A single sign may be used to fulfill more than one of these requirements.  Each sign shall be at least 12 inches by 15 inches.

c.         Golf Courses.  Where recycled water is used for irrigation at a golf course, one sign shall be located at the first and tenth tees, near entrances to any driving range and near any practice putting green.  Each sign shall be at least 12 inches by 15 inches