(A) Determining degree of hazard.
(1) No service shall be completed until the Backflow Administrator, or his/her designee, has been provided information or has surveyed the private water system to determine the degree of hazard and made a determination of a backflow prevention assembly to be installed to protect the public water supply.
(2) Any customer making any modification to the private system's configuration or use of which may change the degree of hazard, shall notify the Backflow Administrator, or his/her designee, before any modification is made. If the Backflow Administrator determines that such modification requires a different backflow prevention assembly, that assembly must be installed before the modifications are made.
(B) Moderate hazard.
(1) If a private water system is subject to any moderate hazard condition in any manner, an approved double check valve assembly must be installed. The following is a list of such conditions requiring a double check valve assembly.
(2) Any industrial or commercial facilities identified as not having a high hazard, fire protection systems and lawn irrigation systems not using chemical additives will be considered a moderate hazard and require the installation of a double check valve assembly.
(C) Low hazard.
(1) All single family residential homes will be considered a low hazard and shall have a minimum of a dual check valve device installed at the meter service by the town.
(2) If no other backflow prevention assembly is specified, a double check valve assembly must be installed on all private water systems.
(D) Imminent hazard.
(1) If it has been determined a customer's private water system has an imminent hazard, such customer must install a backflow prevention assembly specified by the Backflow Administrator, his/her designee, and this subchapter. This assembly must be installed within 24 hours of notification from the Administrator, or his/her designee. If the customer fails to install the specified assembly within the allowed time limit, water service to the customer's private water system will be terminated and may be subject to specified civil penalties. In the event the Backflow Administrator, or his/her designee, is unable to notify the customer in 24 hours of determining an imminent hazard exist, the Administrator or his/her designee may terminate water service until the specified assembly is installed. These actions may be carried out under the Safe Drinking Water Act (Title XIV Section 1431) and the North Carolina State Plumbing Code (Appendix D104.2.6).
(2) Only a backflow prevention assembly offering a greater degree of protection may be installed in place of a specified assembly required by this subchapter.
(Ord. 02-03-21, passed 11-12-02) Penalty, see § 51.99