To limit the probability that PVC water pipe, fittings and solvent cement will not meet proper standards, which could lead to pipe, fittings and solvent cement not performing in the way intended, which could lead to failure, which could lead to leakage or flooding, which could lead to damage to the building or facility.
To limit the probability that normal operating pressures will lead to failure of the PVC water pipe, fittings or solvent cement, which could lead to leakage or flooding, which could lead to damage to the building or facility.