IGCSE Environmental Management Practice Test

A vessel used to store potable water.

Cistern Tank Reservoir Container

Correct Answer:

Cistern

Explanation:

Storing drinking water safely means using a vessel that is designed to keep the water clean and prevent contamination. A cistern is specifically a closed vessel used to store potable water; it’s typically designed with a tight lid and food‑grade lining to protect water quality from dust, insects, and leaching. This makes it the best fit for keeping drinking water safe at home or in small-scale systems. A tank can hold water, but it’s a general term and doesn’t necessarily imply standards for drinking water. A reservoir refers to a large body of stored water, usually for community supply, not a small vessel used personally. A container is too generic and may not be designed for potable water storage.

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