A house union tap is a tap to which a hose can be connected. Hoses attached to hose union taps are considered to be a high contamination risk. This is because backflow via a hosepipe submerged in a bucket, trough, puddle, drain or pond is a very real possibility.
Conversely a tap to which a hose cannot be connected is called a bib tap. Providing that a suitable gap between the tap outlet and the spill over level of whatever it is discharging water into is maintained at all times these taps are typically considered to be a lower risk than a hose union tap.
Uncontrolled if downloaded. This is informative, non-statutory guidance and intended for general guidance purposes only; it is subject to change.
Compliance with this information should not be relied upon as guaranteeing no enforcement action will be taken by water undertakers. Water Regs UK accepts no liability for loss, indirect or consequential loss arising from or in connection with this guidance document.