List: 1. Frostfree Nosepump 2. Livestock 3. Water 4. Wet well 5. Groundwater source 6. Powerless system 7. Geothermal heat 8. Thirsty livestock 9. Plumbing 10. Suspended 11. Frost zone 12. Pendulum 13. Piston pump 14. Water consumption 15. Weep hole 16. Bacterial contamination