Current through Register Vol. 24-18, September 15, 2024
(1) All public
water systems shall submit to a sanitary survey conducted by the department, or
the department's designee, based upon the following schedule:
(a) For community water systems, every three
years. In accordance with 40
C.F.R. 141.21(d)(3),
community water systems may qualify to be surveyed every five years if the
system meets the following criteria:
(i)
Provides at least 4-log treatment of viruses (using inactivation, removal, or a
department-approved combination of 4-log inactivation and removal) before or at
the first customer for all its groundwater sources; or
(ii) Has no total coliform or E.
coli MCL violations since the last sanitary survey;
(iii) Has no coliform treatment technique
violations for failure to conduct the required assessment or complete
corrective actions in response to a treatment technique trigger since the last
sanitary survey;
(iv) Has no more
than one total coliform monitoring violation since the last sanitary survey;
and
(v) Has no unresolved
significant deficiencies from the current sanitary survey.
(b) For transient noncommunity and
nontransient non-community water systems, every five years.
(c) For community water systems that use a
surface water or GWI source, every three years. Sanitary surveys may be reduced
to every five years upon written approval from the department.
(d) The department may schedule a sanitary
survey or increases the frequency of surveys if it determines a public health
threat exists or is suspected.
(2) All public water system purveyors shall
be responsible for:
(a) Ensuring cooperation
in scheduling sanitary surveys with the department, or its designee;
(b) At the department's request, provide any
existing information that will enable the department to conduct a sanitary
survey;
(c) Ensuring the
unrestricted availability of all facilities and records at the time of a
sanitary survey or special purpose investigation; and
(d) Taking preventive or corrective action as
directed by the department when results of a sanitary survey indicate
conditions which are currently or may become a detriment to system operation or
public health.
(3) All
public water systems that use a surface water or GWI source shall, within
forty-five days following receipt of a sanitary survey report that identifies
significant deficiencies, identify in writing to the department how the system
will correct the deficiencies and propose a schedule to complete the
corrections. The department may modify the schedule if necessary to protect the
health of water system users.
(4) A
groundwater system with significant deficiencies must meet the treatment
technique requirements of WAC
246-290-453(1)
and the special notification requirements under WAC
246-290-71005(4) and
(5) except where the department determines
that the significant deficiency is in a portion of the distribution system that
is served solely by surface water or GWI.
Statutory Authority:
RCW
43.20.050 and
70.119A.080. 10-20-068, §
246-290-416, filed 9/29/10, effective 11/1/10. Statutory Authority:
RCW
43.20.050(2) and (3) and
70.119A.080. 03-08-037, §
246-290-416, filed 3/27/03, effective 4/27/03. Statutory Authority: RCW
43.02.050 [43.20.050]. 99-07-021, § 246-290-416, filed 3/9/99, effective
4/9/99.
