Before revision: Phoenix - at Guardian - at St. Francis - at Cistern at intersection|right Cisterns As a final measure to counter any outright failure of the AWSS piping, a network of 177 independent underground water cisterns is present .
After revision: Phoenix - at Guardian - at St. Francis - at Cistern at intersection|right Cisterns As a final measure to counter a fthe city maintainsilure of the AWSS piping, a network of 177 independent underground water cisterns .