You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Problem village if water is in depth more than? and explain in detail?
A “problem Village” has been defined as one where :

No source of safe water is available within a distance of 1.6 km OR
Water source has excess salinity, iron, fluorides &other toxic elements OR
Water is exposed to the risk of cholera
Water is available at a depth of more than 15 mts OR