Social & Preventive Medicine Air, Light, Sound, Housing, Radiation, Waste Disposal 5bd2731b All are criteria for 'Problem Village' EXCEPT A Radial distance > 1.6 kms B Depth > 50 m C Elevation > 100 m D Excess of Salt High-Yield Explanation Problem village Radial distance - > 1.6 km Depth - >15 mtr. Elevation - > 100 mtr Excess of iron & salt, Arsenic, Fluoride