Rhode Island Journeyman Plumber Practice Exam

Under what condition is separation distance for water service not required?

1. When installed below grade

2. When using approved fittings

3. If insulation is applied

4. When the distance is greater than 50 feet

The correct answer is: When the distance is greater than 50 feet

The correct answer is based on the understanding of plumbing codes and standards that govern the installation of water service lines. In many plumbing codes, a separation distance from other utilities or sources of contamination is often specified to ensure the safety and quality of the potable water. However, under certain conditions, specifically when the distance exceeds a particular threshold—such as 50 feet—the requirement for separation may be waived. This is generally because at greater distances, the likelihood of cross-contamination or interference diminishes significantly. As such, when the water service line is installed at a distance greater than this specified threshold, potential hazards associated with proximity to other utility lines or sources of contamination are considered negligible. Thus, the separation distance requirement does not apply, allowing for more flexible installation options without compromising water safety. Understanding conditions under which these requirements may be relaxed can help plumbing professionals make informed decisions about installations while maintaining compliance with local safety standards.