Differences Between Above-Ground and Below-Ground Cisterns: Which Is Better?

Cistern Design Considerations

When choosing between above-ground and below-ground cisterns, consider the space available and the amount of water you need to store. A 1,000-gallon above-ground cistern is typically more affordable and easier to install than a 1,000-gallon below-ground cistern, which requires excavation and backfilling. However, below-ground cisterns can be more effective at reducing water evaporation and protecting the water from sunlight.

Maintenance and Inspection

Above-ground cisterns are generally easier to maintain and inspect, as they can be accessed from the top or sides. This allows for regular cleaning and testing of the water quality. For example, a 5x7 foot above-ground cistern can be easily accessed from the top for maintenance, while a below-ground cistern may require excavation to access the bottom for inspection.

Water Pressure and Flow

When selecting a cistern, consider the water pressure and flow rate required for your needs. A 1,000-gallon above-ground cistern typically has a higher water pressure and flow rate than a below-ground cistern of the same size, making it more suitable for irrigation systems or household use.