What is one purpose of venting a cistern?

Venting a cistern serves the essential purpose of allowing gases to escape. In a plumbing system, cisterns can accumulate gases, such as those resulting from the decomposition of organic matter or from chemical reactions within the water. If these gases are not properly vented, pressure can build up inside the cistern, potentially leading to malfunctions or damage to the system. Additionally, the escape of gases helps maintain air pressure balance, which is crucial for the proper operation and efficiency of the water supply system. Thus, effective venting is vital for safety and functionality in cistern operations.