Current through Register Vol. 24-18, September 15, 2024
(1)
Purveyors shall ensure that good engineering criteria and practices are used in
the design and construction of all public water systems, such as those set out
in:
(a) Department guidance on design for
Group A public water systems;
(b)
The most recent published edition of the International Building Code (IBC), the
Uniform Plumbing Code (UPC), and other national model codes adopted in
Washington state;
(c) The most
recent published edition of Recommended Standards for Water Works, A
Committee Report of the Great Lakes - Upper Mississippi River Board of State
Public Health and Environmental Managers;
(d) Standard specifications of the American
Public Works Association, the American Society of Civil Engineers, AWWA, or the
American Society for Testing and Materials;
(e) Design criteria, such as contained in
current college texts and professional journal articles, acceptable to the
department;
(f) Chapter 173-160 WAC
Minimum Standards for Construction and Maintenance of
Wells;
(g) The latest
edition of the PNWS-AWWA Cross-Connection Control Manual, or the University of
Southern California (USC) Manual of Cross-Connection Control.
(2) In addition, purveyors of new
or expanding public water systems shall consider and use, as appropriate, the
following design factors:
(a) Historical
water use;
(b) Community versus
recreational uses of water;
(c)
Local conditions and/or regulations;
(d) Community expectations;
(e) Public Water System Coordination Act
considerations where appropriate;
(f) Provisions for systems and component
reliability in accordance with WAC
246-290-420;
(g) Wind pressures, seismic risk, snow loads,
and flooding;
(h) Other risks from
potential disasters, as feasible; and
(i)Other information as required by the
department.
Statutory Authority:
RCW
70.119A.180 and
43.20.050. 08-03-061, §
246-290-200, filed 1/14/08, effective 2/14/08. Statutory Authority: RCW
43.02.050 [43.20.050]. 99-07-021, § 246-290-200, filed 3/9/99, effective
4/9/99. Statutory Authority:
RCW
43.20.050. 93-08-011 (Order 352B), §
246-290-200, filed 3/25/93, effective 4/25/93; 91-02-051 (Order 124B),
recodified as § 246-290-200, filed 12/27/90, effective 1/31/91. Statutory
Authority: RCW 34.04.045. 88-05-057 (Order 307), § 248-54-105, filed
2/17/88. Statutory Authority:
RCW
43.20.050. 83-19-002 (Order 266), §
248-54-105, filed 9/8/83.
