The fixtures and conditions listed in items 1 through 8 are deemed unsanitary and
shall not be installed or maintained:
- Water closets not complying with Section P-706.1.1 or P-706.1.2;
- Water closets having an invisible trap seal, except for frost-proof closets permitted under Section P-706.7;
- Water closets having an unventilated space;
- Water closets with walls which are not thoroughly washed when the contents are discharged;
- Water closets so arranged that the contents of the bowl can be siphoned back into the tank supplying the water for flushing or into the water distribution pipe and water supply pipes;
- Floor gutter urinals;
- Wooden laundry trays and sinks, except for special uses when approved by the Department;
- Fixtures which do not provide a sufficient air gap or which may otherwise cause contamination of the water supply.