(p) "Operator in charge" means a certified operator who is designated by the
owner of a public water supply as the responsible individual in overall charge of a
waterworks system, or portion of a
system, who makes decisions
regarding the daily operational activities of the system that will directly impact the
quality or quantity of drinking water.
(q) "Optimal corrosion control treatment," for the purpose of lead and copper
control, means the corrosion control treatment that minimizes the lead and copper
concentrations at users' taps while ensuring that the treatment does not cause the
public water supply to be in violation of any national primary drinking water
History: 1979 AC; 1984 AACS; 1989 AACS; 1991 AACS; 1994 AACS; 2000 AACS; 2002 AACS;
2003 AACS; 2009 AACS.
R 325.10107 Definitions; P, R.
Rule 107. As used in these rules:
(a) "Permit" means a public water supply construction permit that is issued to a
supplier of water by the department under section 4 of the act, MCL 325.1004.
(b) "Person" means an individual, partnership, copartnership, cooperative, firm,
company, public or private association or corporation, political subdivision, agency of the
state, agency of the federal government, trust, estate, joint structure company, or any
other legal entity, or their legal representative, agent, or assignee.
(c) "PFAS” means per- and polyfluoroalkyl substances.
(d) "Pitless adapter" means a device or assembly of parts that permits water to pass
through the wall of a well casing or extension of a well casing and that provides access to
the well and to the parts of the system within the well in a manner that prevents the
entrance of contaminants into the well and the water produced.
(e) "Plans and specifications" means drawings, data, and a true description or
representation of an entire waterworks system or parts of the system as it exists or is to be
constructed, and a statement of how a waterworks system must be operated.
(f) "Plant intake" means the works or structures at the head of a conduit through which
water is diverted from a source, for example, river or lake, into the treatment plant.
(g) "Point-of-entry treatment device (POE)" means a treatment device applied to the
drinking water entering a house or building for the purpose of reducing contaminants in
the drinking water distributed throughout the house or building.
(h) "Point-of-use treatment devise (POU)" means a treatment device applied to a single
tap used for the purpose of reducing contaminants in drinking water at that 1 tap.
(i) "Political subdivision" means a city, village, township, charter township, county,
district, authority, or portion or combination of any of the entities specified in this
(j) "PQL" means the practical quantitation levels. The PQL is the lowest concentration
that can be reliably achieved by well-operated laboratories within specified limits of
precision and accuracy during routine laboratory operating conditions.
(k) "Presedimentation" means a preliminary treatment process used to remove gravel,
sand, and other particulate material from the source water through settling before the
water enters the primary clarification and filtration processes in a treatment plant.