Building utility floodwater isolation system

A sewer isolation system for isolating sewer line services to a facility under high water conditions, and said facility also having a domestic water line service and one floor at ground level, said system comprising:

• a. a sewer line and a domestic water supply line;
• b. a level transmitter,
• c. a level indicating controller station,
• d. a bi-directional sewer control valve connected to the sewer line and a domestic water supply valve connected to the domestic water supply line respectively,
• e. a control panel,
• f. wherein the level transmitter is installed over a body of water that is capable of transmitting a level of the body of water signal to the level indicating controller station, said level indicating controller station further comprising a predetermined setpoint, at least one means to send actuation signal to the bi-directional sewer control valve and the domestic water supply valve, which bi-directional sewer control valve and domestic water supply valve are capable of actuation and shall remain open when the level of the body of water signal is below the predetermined setpoint;
• g. upon the level of the body of water signal reaching above the setpoint, the bi-directional sewer control valve and the domestic water supply valve are is closed thus isolating the sewer line and isolating the domestic water supply line service to the facility and having a closed sewer line and closed water supply line;
• h. upon return of the level of the body of water signal below the setpoint, the bi-directional sewer control valve and the domestic water supply control valve will open, thus removing the isolation of the domestic water line and sewer line.