Cysterny

Cysterny is the Polish term for cisterns, which are tanks or reservoirs used to store liquids. In general usage, cysterny can refer to water cisterns, fuel tanks, or chemical holding tanks found in buildings, ships, industrial facilities, and urban infrastructure. They may be located above ground or underground and are commonly made from concrete, steel, or modern plastics such as polyethylene and fiberglass, with linings or coatings to ensure watertightness and chemical resistance.

In buildings, water cisterns provide storage for domestic supply or for rainwater harvesting, connecting to plumbing via inlet pipes, outlets, venting, and gauges. Underground cisterns are often used in arid regions to collect and store rainwater for non-potable uses. In industrial and maritime contexts, cysterny store fuels, lubricants, or ballast liquids, and are designed to withstand internal pressures, temperature changes, and chemical compatibility.

Historically, cisterns were essential components of urban water systems. Notable examples include large subterranean cisterns in ancient and medieval cities, such as the Basilica Cistern in Istanbul, which demonstrate the role of cisterns in ensuring a reliable water supply. Modern cysterny must meet safety and building codes, including proper venting, spill containment, and regular inspection and maintenance to prevent leaks or contamination.

See also: cistern, water tank, rainwater harvesting, underground tank.