When considering backup power options for accessing well water without electricity, it is important to choose a reliable and sustainable source of energy. One option is to use a generator as a backup power source, particularly for deep well pumps. However, it is also important to consider well water filtration to ensure safe and clean water. In addition, self-powered pumps that don't require fuel, solar power, or electricity can provide a sustainable and reliable option for accessing well water without electricity. Ultimately, the key factors to consider when choosing a backup power source are reliability, sustainability, and the ability to provide safe and clean water for consumption.