I am just totally guessing,.....maybe this would be similar
https://adminrules.idaho.gov/rules/current/58/580108.pdfTo whom does this rule apply?
This rule applies to public drinking water systems as defined in IDAPA 58.01.08.003. The rule
applies to public water system owners, operators, design engineers and consultants.
What is the purpose of this rule?
purpose is to control and regulate the design, construction, operation,
maintenance, and quality control of ***public drinking water systems**** to provide a degree of assurance that such systems are protected from contamination and maintained free from contaminants which may injure the health of the consumer.
21. Connection. Each structure, facility, or premises which is connected to a water system, and which
is or could be used for domestic purposes, is considered a single connection.***(user Point** A single family residence is considered
to be a premises. Multi-family dwellings and apartment ***ומערך **, condominium, and office complexes are considered single
connections by the water system, in which case each such unit
shall be considered a single connection. ((User points