The "Caution : Non-Drinkable Water" sign cautions individuals to not ingest the tap water due to lack of filtration or possible contaminations. The sign displays a filled cup under a faucet barred off in a red circle to bring the attention to the harms of ingesting the water. It reminds individuals to remember the health and safety concerns of the ingestion of non-potable water 

The sign can be displayed on private or public property, in washrooms, business and workplaces near sinks, faucets and drinking fountains. It is best displayed right next to or above the given source of water.