Is DIY Cistern Construction a Good Idea for Beginners?

Assessing Your Resources and Needs

Before considering DIY cistern construction, evaluate your available resources, including a suitable location, sufficient space, and the necessary materials and tools. Determine your water collection and storage needs, taking into account factors such as rainfall, climate, and household size. A general rule of thumb is to size your cistern to hold at least 1,000 gallons of water to ensure adequate storage for a small household.

Cistern Sizing and Design Considerations

When sizing your cistern, consider the roof catchment area, rainfall intensity, and desired water storage capacity. A common formula for calculating cistern size is to multiply the roof catchment area by the rainfall intensity and a factor for desired water storage capacity. For example, if your roof catchment area is 1,000 square feet and the rainfall intensity is 0.5 inches per hour, a 1,000-gallon cistern would provide a 1-month water supply. Design your cistern with a minimum depth of 3 feet and a width of at least 2 feet to allow for easy maintenance and cleaning.

Safety and Regulatory Considerations

When building a cistern, prioritize safety and regulatory compliance by installing a secure lid, a watertight seal, and a proper drainage system. Check with local authorities to determine if you need a permit to construct a cistern and to ensure compliance with relevant regulations and codes. Consider consulting with a professional if you are unsure about any aspect of the design or construction process.