Unless otherwise provided, plumbing fixtures must be supplied with what type of water?

Plumbing fixtures are generally required to be supplied with potable water, meaning it is safe for human consumption. This requirement is crucial because potable water is treated to meet health standards and is free from harmful contaminants, making it suitable for drinking, cooking, and personal hygiene.

In most scenarios, fixtures like sinks, showers, and toilets need access to potable water to ensure that they function properly and maintain hygiene standards. If fixtures were supplied with non-potable water, recycled water, or even hot water exclusively, it could pose health risks or create sanitation issues.

Therefore, the standard set by plumbing codes mandates that, unless a specific provision states otherwise, plumbing fixtures must connect to a source of potable water to protect public health and safety.