Water Distribution (WD):A PWS that
obtains all of its water from
another PWS, and is not owned or operated by the supplying PWS.A WD system
does not have any other source of water other than water from the supplying PWS.A WD system may apply chorine for supplemental disinfection but otherwise does
not treat its water.A WD that retreats with anything other than
chlorine is at least a
Class I PWS.
Class I:A community or non-transient non-community
PWS with a GW source that serves a
population of less than ten thousand (10,000)
including consecutive connection population and does not treat for an identified primary contaminant.A transient non-community PWS that has a groundwater source that uses
gaseous chlorine, chlorine
dioxide as a means of disinfection or has treatment for removal of nitrate or nitrite, or both.