The Commission will install a SCDHEC approved DCVA on all new residential meter installations. This device will be installed at the meter box with no branch connections between the meter and the Commission installed DCVA. The device will be installed at the same time the new meter is set.
Water Service Detail for ¾” to 2” Services
The Commission will be responsible for the initial and annual testing of all residential devices. The device will be tested by a representative of the Commission at the time of installation as well as annually thereafter.
The Commission’s Backflow Coordinator will make a determination of the type of device to be installed based on the completed Cross Connection Control Questionnaire. All costs associated with the installation of this assembly shall be the responsibility of the owner. There will be no branch connections between the meter and the commercial backflow device. The assembly shall be installed as per manufacturer’s specifications/recommendations.
Double Check Valve Assembly 2” and smaller
Double Check Valve Assembly larger than 2”
Reduced Pressure Principle Assembly
All newly installed commercial assemblies shall be tested by a SCDHEC certified tester immediately after installation and once each subsequent year thereafter. All costs associated with the testing of the assembly shall be the responsibility of the owner. If test results are not provided to the Commission within the allotted time as prescribed in a written letter from the Commission, then the device will be tested by the Commission or a representative thereof and all costs associated with the testing of this device will be charged to the owner’s account. As per SCDHEC requirements, all backflow prevention assemblies must be tested annually by a certified tester. Copies of these test results are to be furnished to the Commission. JMWSC Backflow Device Test Form