(A) Minimum Protection Levels: Minimum protection levels shall be determined by the city. The following list of circumstances shall require backflow prevention and is not exclusive:
1. All new nonresidential connections;
2. Premises determined by the city to have unusually complex plumbing configurations that cannot be adequately evaluated;
3. Premises with limited access or that deny access to the city for internal inspections;
4. Existing nonresidential connections where city water facilities and connections are modified, upgraded or improved;
5. Each service connection that supplies water to premises on which any substance is or may be handled in such a manner as to permit entry into the public water system, including water originating from the public water system which is or may be subjected to deterioration in sanitary quality;
6. Parcels having more than one service connection;
7. Premises where there are irrigation systems into which fertilizers, herbicides, or pesticides are, or can be injected;
8. Premises where a cross connection exists, or the potential for one that could result in the pollution or contamination of the public water system;
9. Residential parcels used for business purposes determined by the city to pose a threat to the public water system;
10. Premises with any unapproved auxiliary water supply, whether or not it is interconnected with the public water system, except those premises with a deactivated well;
11. Premises with internal pressure boosting system; and
12. All sewage/wastewater treatment facilities and sewage lift stations.
(B) Fire District's System: Nothing in this program shall be construed as affecting the customer's responsibility for meeting the local fire district's fire flow system requirements. Nothing in a local fire district's fire flow system requirements shall be construed as affecting the customer's responsibility for meeting the requirements of this program.
(C) Existing Nonresidential Service Connections: Existing unprotected nonresidential connections are subject to city evaluation and on site cross connection control surveys. The city must be provided unimpeded access to perform internal inspections for the purpose of determining cross connection hazards. If city access is impeded for any reason, then the customer will be required to install a minimum of an RP to protect the public water system.
(D) New Nonresidential Fire Suppression System Connections: All new nonresidential fire suppression system connections shall be protected with a city approved RPDA installed according to city specifications.
(E) Existing Nonresidential Fire Suppression System Connections: Nonresidential fire suppression systems currently protected with a minimum of a single detector check valve will be allowed to continue in service until such system is modified, updated, improved, or hazard classification is determined to require an RPDA. If existing protection is determined inadequate or is modified, improved, or updated as identified under this program, the customer shall install an RPDA at the point of connection to city water system according to city specifications. (Ord. 1661, 2-25-2014)