Quick Answer
It is highly likely that you will need a permit to bury a cistern in your backyard, as it involves excavation and the installation of a water storage system that may be subject to local regulations and building codes.
Local Building Codes and Regulations
Local building codes and regulations vary widely, but most jurisdictions require a permit for installing a cistern, regardless of whether it’s buried or above ground. These permits ensure that the cistern is installed and maintained safely and that it meets local health and environmental standards. For example, the International Building Code (IBC) requires a permit for water storage tanks, including cisterns.
Design and Installation Considerations
When designing and installing a buried cistern, consider the site’s geology, hydrology, and environmental conditions. The cistern should be at least 10 feet away from any nearby water sources, such as wells or streams, and at least 5 feet away from any property lines. The excavation should be sloped to prevent water accumulation and erosion. A properly fitted liner, such as a 40-mil HDPE liner, is essential to prevent leaks and contamination.
Permitting Process and Costs
The permitting process typically involves submitting plans and specifications for the cistern to the local building department. The costs of permits vary depending on the jurisdiction and the size of the cistern, but expect to pay between $500 to $2,000 for a typical permit. It’s essential to check with your local building department for specific requirements and costs. In addition to permits, you may need to obtain a health department permit, especially if the cistern is used for potable water storage.
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