| Answer | Crossword Clue |
|---|---|
| BOILERS | Water tanks. |
| CISTERNS | Water tanks |
| BOILERS | Hot-water tanks |
| CISTERNS | Rain water storage tanks. |
| CISTERNS | Tanks for rain water |
| BOILERROOM | Where hot-water tanks are housed in a building |
| plumbing | The system of pipes, tanks, fittings, and other apparatus required for the water supply, heating, and sanitation in a building |
