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1. Backflow prevention assemblies for containment shall be installed immediately following the water meter or as close to that location as deemed practical by the City.
2. A water service determined to present a high hazard shall be protected by an air gap or an approved reduced-pressure principle backflow prevention assembly.
3. A water service determined to present a low hazard shall be protected by an approved double check valve assembly, or an assembly approved in subsection 2. above.
1. A fire protection system using antifreezes or other additives shall be protected by an approved reduced pressure principle backflow prevention assembly.
2. A dry type fire protection system shall be protected by an approved double check valve backflow prevention assembly.
3. Backflow prevention assemblies must be tested annually on a routine scheduled basis by the required licensed technician. The City of Ankeny fire marshal and water utility are both to be copied with test results.
1. The customer shall be responsible for ensuring that no cross connections exist without an approved backflow prevention assembly.
2. The customer shall immediately notify the City water utility when the customer becomes aware that backflow has occurred in the building, property or private water system receiving water service, and take measures to confine the contamination or pollution by turning off valves to isolate the area of the incident. The City may order that a water service be temporarily shut off when a backflow occurs in a customer’s building, property or private water system.
3. The customer shall cause installation, operation, maintenance and testing of the backflow prevention assemblies required by this chapter. Backflow prevention assemblies shall be installed by a licensed plumbing contractor per established plumbing codes. A licensed backflow prevention testing technician, registered with the Iowa Department of Public Health, shall test the backflow prevention assembly at initial installation and annually each year thereafter. Backflow prevention assemblies installed on irrigation systems shall be tested annually by May 31 of each year. Backflow prevention assemblies must be retested when repairs have been completed to ensure the repaired device is operational.
(Ord. 1808 – July 14 Supp.)
4. The customer shall ensure the City water utility receives the backflow prevention assembly test report upon completion of testing. Failure to provide report within 15 days of the test may result in termination of water service.
1. Backflow prevention assemblies which are in place, but have not been used for more than three (3) months, shall be tested prior to being placed back into service.
2. Any backflow prevention assembly that fails a test and is repaired or replaced, must successfully pass the test prior to being placed into operation.
3. The City may require more frequent testing of backflow prevention assemblies.
4. The City may conduct, at its own cost, additional testing of a backflow prevention assembly to verify test procedures and results.
5. To suspend the testing requirements for an irrigation system or other system taken out of service, the customer shall have a licensed plumbing contractor disconnect all piping and remove the backflow prevention assembly. When the system is to be placed back into service, the backflow prevention assembly must be re-installed by a licensed plumbing contractor and tested by the required licensed testing technician. The customer must contact the City water utility for an appointment to have the disconnection and reconnection inspected.
Water service may be terminated in the case of noncompliance with, but not limited to, the following.
1. Refusal to allow City access to the property to inspect for cross connection at reasonably scheduled times.
2. Unauthorized removal or bypassing of a backflow prevention device required by the City.
3. Providing inadequate backflow prevention when a cross connection exists.
4. Failure to install an approved backflow prevention assembly when required by the City.
5. Failure to test a backflow prevention assembly as required by the City and/or submit the required test report within 15 days of the test.
6. Failure to comply with any other provisions of this chapter or reasonable requests.
(Chapter 93 – Ord. 1719 – Apr. 12 Supp.)