246-290-630  <<  246-290-632 >>   246-290-634

Treatment technique violations.

(1) A treatment technique violation shall be considered a violation of a primary drinking water standard and in the case of an unfiltered system, may result in the purveyor of an unfiltered system being required to install filtration.
(2) A treatment technique violation occurs when a system using a surface or GWI source is identified by the department as the source of a waterborne disease outbreak or any of the following occur as applicable:
(a) The purveyor providing filtration delivers unfiltered water or fails to meet one or more of the following requirements:
(i) Filtration treatment in accordance with WAC 246-290-660; or
(ii) Disinfection treatment in accordance with WAC 246-290-662.
(b) The purveyor required to install filtration:
(i) Fails to meet the interim disinfection requirements under WAC 246-290-672 or as otherwise directed by the department; or
(ii) Fails to install filtration or develop an alternate source by the applicable time lines specified in WAC 246-290-670.
(c) The purveyor of an unfiltered surface water, or GWI source, meeting the criteria to remain unfiltered:
(i) Delivers water with a turbidity level exceeding 5.0 NTU measured at a point immediately prior to the point of primary disinfection; or
(ii) Fails to meet one or more of the disinfection requirements under WAC 246-290-692 after the dates specified in WAC 246-290-686.
(d) The purveyor of an unfiltered source meeting the criteria to provide a limited alternative to filtration:
(i) Delivers water with a turbidity level exceeding 5.0 NTU measured at a point immediately prior to the point of primary disinfection; or
(ii) Fails to meet one or more of the disinfection requirements under WAC 246-290-692.
(e) A purveyor supplies water from an unfiltered source that has not been previously approved by the department.
(f) A purveyor of a department approved unfiltered source that fails to meet the on-going criteria to remain unfiltered:
(i) Delivers water with a turbidity level exceeding 5.0 NTU measured at a point immediately prior to the point of primary disinfection; or
(ii) Fails to meet one or more of the disinfection requirements under WAC 246-290-692.
(g) A purveyor of a department approved unfiltered source that has failed to meet the criteria to provide a limited alternative to filtration:
(i) Delivers water with a turbidity level exceeding 5.0 NTU measured at a point immediately prior to the point of primary disinfection; or
(ii) Fails to meet one or more of the disinfection requirements under WAC 246-290-692.
(h) A purveyor fails to meet the enhanced Cryptosporidium treatment requirements under 40 C.F.R. 141.711 or 141.712.
[Statutory Authority: RCW 70.119A.180 and 43.20.050. WSR 08-03-061, § 246-290-632, filed 1/14/08, effective 2/14/08. Statutory Authority: RCW 43.02.050 [43.20.050]. WSR 99-07-021, § 246-290-632, filed 3/9/99, effective 4/9/99. Statutory Authority: RCW 43.20.050. WSR 94-14-001, § 246-290-632, filed 6/22/94, effective 7/23/94; WSR 93-08-011 (Order 352B), § 246-290-632, filed 3/25/93, effective 4/25/93.]
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